1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
|
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="es" xml:lang="es"><head>
<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" />
<!--
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
This file is generated from xml source: DO NOT EDIT
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
-->
<title>core - Servidor HTTP Apache Versión 2.4</title>
<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" />
<script src="../style/scripts/prettify.min.js" type="text/javascript">
</script>
<link href="../images/favicon.ico" rel="shortcut icon" /></head>
<body>
<div id="page-header">
<p class="menu"><a href="../mod/">Módulos</a> | <a href="../mod/directives.html">Directivas</a> | <a href="http://wiki.apache.org/httpd/FAQ">Preguntas Frecuentes</a> | <a href="../glossary.html">Glosario</a> | <a href="../sitemap.html">Mapa del sitio web</a></p>
<p class="apache">Versión 2.4 del Servidor HTTP Apache</p>
<img alt="" src="../images/feather.png" /></div>
<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
<div id="path">
<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">Servidor HTTP</a> > <a href="http://httpd.apache.org/docs/">Documentación</a> > <a href="../">Versión 2.4</a> > <a href="./">Módulos</a></div>
<div id="page-content">
<div id="preamble"><h1>Funcionalidad Básica de Apache</h1>
<div class="toplang">
<p><span>Idiomas disponibles: </span><a href="../de/mod/core.html" hreflang="de" rel="alternate" title="Deutsch"> de </a> |
<a href="../en/mod/core.html" hreflang="en" rel="alternate" title="English"> en </a> |
<a href="../es/mod/core.html" title="Español"> es </a> |
<a href="../fr/mod/core.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
<a href="../ja/mod/core.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
<a href="../tr/mod/core.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
</div>
<div class="outofdate">Esta traducción podría estar
obsoleta. Consulte la versión en inglés de la
documentación para comprobar si se han producido cambios
recientemente.</div>
<table class="module"><tr><th><a href="module-dict.html#Description">Descripción:</a></th><td>Funcionalides básicas del Servidor HTTP Apache que siempre están presentes.</td></tr>
<tr><th><a href="module-dict.html#Status">Estado:</a></th><td>Core</td></tr></table>
</div>
<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3 class="directives">Directivas</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#acceptfilter">AcceptFilter</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#acceptpathinfo">AcceptPathInfo</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#accessfilename">AccessFileName</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#adddefaultcharset">AddDefaultCharset</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#allowencodedslashes">AllowEncodedSlashes</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#allowoverride">AllowOverride</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#allowoverridelist">AllowOverrideList</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#cgimapextension">CGIMapExtension</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#cgipassauth">CGIPassAuth</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#cgivar">CGIVar</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#contentdigest">ContentDigest</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#defaultruntimedir">DefaultRuntimeDir</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#defaulttype">DefaultType</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#define">Define</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#directory"><Directory></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#directorymatch"><DirectoryMatch></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#documentroot">DocumentRoot</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#else"><Else></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#elseif"><ElseIf></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#enablemmap">EnableMMAP</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#enablesendfile">EnableSendfile</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#error">Error</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#errordocument">ErrorDocument</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#errorlog">ErrorLog</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#errorlogformat">ErrorLogFormat</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#extendedstatus">ExtendedStatus</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#fileetag">FileETag</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#files"><Files></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#filesmatch"><FilesMatch></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#flushmaxpipelined">FlushMaxPipelined</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#flushmaxthreshold">FlushMaxThreshold</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#forcetype">ForceType</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#gprofdir">GprofDir</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#hostnamelookups">HostnameLookups</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#httpprotocoloptions">HttpProtocolOptions</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#if"><If></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#ifdefine"><IfDefine></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#ifdirective"><IfDirective></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#iffile"><IfFile></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#ifmodule"><IfModule></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#ifsection"><IfSection></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#include">Include</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#includeoptional">IncludeOptional</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#keepalive">KeepAlive</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#keepalivetimeout">KeepAliveTimeout</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limit"><Limit></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limitexcept"><LimitExcept></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limitinternalrecursion">LimitInternalRecursion</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limitrequestbody">LimitRequestBody</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limitrequestfields">LimitRequestFields</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limitrequestfieldsize">LimitRequestFieldSize</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limitrequestline">LimitRequestLine</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#limitxmlrequestbody">LimitXMLRequestBody</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#location"><Location></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#locationmatch"><LocationMatch></a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#loglevel">LogLevel</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#maxkeepaliverequests">MaxKeepAliveRequests</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#maxrangeoverlaps">MaxRangeOverlaps</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#maxrangereversals">MaxRangeReversals</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#maxranges">MaxRanges</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#mergeslashes">MergeSlashes</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#mergetrailers">MergeTrailers</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#mutex">Mutex</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#namevirtualhost">NameVirtualHost</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#options">Options</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#protocol">Protocol</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#protocols">Protocols</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#protocolshonororder">ProtocolsHonorOrder</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#qualifyredirecturl">QualifyRedirectURL</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#readbuffersize">ReadBufferSize</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#regexdefaultoptions">RegexDefaultOptions</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#registerhttpmethod">RegisterHttpMethod</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#rlimitcpu">RLimitCPU</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#rlimitmem">RLimitMEM</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#rlimitnproc">RLimitNPROC</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#scriptinterpretersource">ScriptInterpreterSource</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#seerequesttail">SeeRequestTail</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#serveradmin">ServerAdmin</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#serveralias">ServerAlias</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#servername">ServerName</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#serverpath">ServerPath</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#serverroot">ServerRoot</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#serversignature">ServerSignature</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#servertokens">ServerTokens</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#sethandler">SetHandler</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#setinputfilter">SetInputFilter</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#setoutputfilter">SetOutputFilter</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#stricthostcheck">StrictHostCheck</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#timeout">TimeOut</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#traceenable">TraceEnable</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#undefine">UnDefine</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#usecanonicalname">UseCanonicalName</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#usecanonicalphysicalport">UseCanonicalPhysicalPort</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#virtualhost"><VirtualHost></a></li>
</ul>
<h3>Lista de comprobación de errores corregidos</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd historial de cambios</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=core">Problemas Conocidos</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=core">Reportar un error</a></li></ul><h3>Consulte también</h3>
<ul class="seealso">
<li><a href="#comments_section">Comentarios</a></li></ul></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="acceptfilter" id="acceptfilter">Directiva</a> <a name="AcceptFilter" id="AcceptFilter">AcceptFilter</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Configura mejoras para un Protocolo de Escucha de Sockets</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>AcceptFilter <var>protocol</var> <var>accept_filter</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Disponible en Apache httpd 2.1.5 y posteriores.
En Windows desde Apache httpd 2.3.3 y posteriores.</td></tr>
</table>
<p>Esta directiva hace posible mejoras específicas a nivel de sistema operativo
y a través del tipo de Protocolo para un socket que escucha.
La premisa básica es que el kernel no envíe un socket al servidor
hasta que o bien los datos se hayan recibido o bien se haya almacenado
en el buffer una Respuesta HTTP completa.
Actualmente sólo están soportados
<a href="http://www.freebsd.org/cgi/man.cgi?query=accept_filter&sektion=9">
Accept Filters</a> sobre FreeBSD, <code>TCP_DEFER_ACCEPT</code> sobre Linux,
y AcceptEx() sobre Windows.</p>
<p>El uso de <code>none</code> para un argumento desactiva cualquier filtro
aceptado para ese protocolo. Esto es útil para protocolos que requieren que un
servidor envíe datos primeros, tales como <code>ftp:</code> o <code>nntp</code>:</p>
<div class="example"><p><code>AcceptFilter nntp none</code></p></div>
<p>Los nombres de protocolo por defecto son <code>https</code> para el puerto 443
y <code>http</code> para todos los demás puertos. Para especificar que se está
utilizando otro protocolo con un puerto escuchando, añade el argumento <var>protocol</var>
a la directiva <code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code>.</p>
<p>Sobre FreeBDS los valores por defecto:</p>
<div class="example"><p><code>
AcceptFilter http httpready <br />
AcceptFilter https dataready
</code></p></div>
<p>El filtro <code>httpready</code> almacena en el buffer peticiones HTTP completas
a nivel de kernel. Una vez que la petición es recibida, el kernel la envía al servidor.
Consulta la página man de
<a href="http://www.freebsd.org/cgi/man.cgi?query=accf_http&sektion=9">
accf_http(9)</a> para más detalles. Puesto que las peticiones HTTPS
están encriptadas, sólo se utiliza el filtro
<a href="http://www.freebsd.org/cgi/man.cgi?query=accf_data&sektion=9">accf_data(9)</a>.</p>
<p>Sobre Linux los valores por defecto son:</p>
<div class="example"><p><code>
AcceptFilter http data <br />
AcceptFilter https data
</code></p></div>
<p>En Linux, <code>TCP_DEFER_ACCEPT</code> no soporta el buffering en peticiones http.
Cualquier valor además de <code>none</code> habilitará
<code>TCP_DEFER_ACCEPT</code> en ese socket. Para más detalles
ver la página man de Linux
<a href="http://homepages.cwi.nl/~aeb/linux/man2html/man7/tcp.7.html">
tcp(7)</a>.</p>
<p>Sobre Windows los valores por defecto son:</p>
<div class="example"><p><code>
AcceptFilter http data <br />
AcceptFilter https data
</code></p></div>
<p>Sobre Windows mpm_winnt interpreta el argumento AcceptFilter para conmutar la API
AcceptEx(), y no soporta el buffering sobre el protocolo http. Hay dos valores
que utilizan la API Windows AcceptEx() y que recuperan sockets de red
entre conexciones. <code>data</code> espera hasta que los datos han sido
transmitidos como se comentaba anteriormente, y el buffer inicial de datos y las
direcciones de red son recuperadas a partir de una única llamada AcceptEx().
<code>connect</code> utiliza la API AcceptEx() API, y recupera también
las direcciones de red, pero a diferencia de <code>none</code>
la opción <code>connect</code> no espera a la transmisión inicial de los datos.</p>
<p>Sobre Windows, <code>none</code> prefiere accept() antes que AcceptEx()
y no recuperará sockets entre las conexiones. Lo que es útil para los adaptadores de
red con un soporte precario de drivers, así como para algunos proveedores de red
tales como drivers vpn, o filtros de spam, de virus o de spyware.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive">Protocol</code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="acceptpathinfo" id="acceptpathinfo">Directiva</a> <a name="AcceptPathInfo" id="AcceptPathInfo">AcceptPathInfo</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Los recursos aceptan información sobre su ruta</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>AcceptPathInfo On|Off|Default</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>AcceptPathInfo Default</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Disponible en Apache httpd 2.0.30 y posteriores</td></tr>
</table>
<p>Esta directiva controla si las peticiones que contienen información sobre la ruta
que sigue un fichero que existe (o un fichero que no existe pero en un directorio que
sí existe) serán aceptadas o denegadas. La información de ruta puede estar disponible
para los scripts en la variable de entorno <code>PATH_INFO</code>.</p>
<p>Por ejemplo, asumamos que la ubicación <code>/test/</code> apunta a
un directorio que contiene únicamente el fichero
<code>here.html</code>. Entonces, las peticiones tanto para
<code>/test/here.html/more</code> como para
<code>/test/nothere.html/more</code> recogen
<code>/more</code> como <code>PATH_INFO</code>.</p>
<p>Los tres posibles argumentos para la directiva
<code class="directive">AcceptPathInfo</code> son los siguientes:</p>
<dl>
<dt><code>Off</code></dt><dd>Una petición sólo será aceptada si
se corresponde con una ruta literal que existe. Por lo tanto, una petición
con una información de ruta después del nombre de fichero tal como
<code>/test/here.html/more</code> en el ejemplo anterior devolverá
un error 404 NOT FOUND.</dd>
<dt><code>On</code></dt><dd>Una petición será aceptada si una
ruta principal de acceso se corresponde con un fichero que existe. El ejemplo
anterior <code>/test/here.html/more</code> será aceptado si
<code>/test/here.html</code> corresponde a un fichero válido.</dd>
<dt><code>Default</code></dt><dd>La gestión de las peticiones
con información de ruta está determinada por el <a href="../handler.html">controlador</a> responsable de la petición.
El controlador principal para para ficheros normales rechaza por defecto
peticiones <code>PATH_INFO</code>. Los controladores que sirven scripts, tales como <a href="mod_cgi.html">cgi-script</a> e <a href="mod_isapi.html">isapi-handler</a>, normalmente aceptan
<code>PATH_INFO</code> por defecto.</dd>
</dl>
<p>El objetivo principal de la directiva <code>AcceptPathInfo</code>
es permitirte sobreescribir la opción del controlador
de aceptar or rechazar <code>PATH_INFO</code>. Este tipo de sobreescritura se necesita,
por ejemplo, cuando utilizas un <a href="../filter.html">filtro</a>, tal como
<a href="mod_include.html">INCLUDES</a>, para generar contenido
basado en <code>PATH_INFO</code>. El controlador principal normalmente rechazaría
la petición, de modo que puedes utilizar la siguiente configuración para habilitarla
como script:</p>
<div class="example"><p><code>
<Files "mypaths.shtml"><br />
<span class="indent">
Options +Includes<br />
SetOutputFilter INCLUDES<br />
AcceptPathInfo On<br />
</span>
</Files>
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="accessfilename" id="accessfilename">Directiva</a> <a name="AccessFileName" id="AccessFileName">AccessFileName</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Nombre del fichero distribuido de configuración</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>AccessFileName <var>filename</var> [<var>filename</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>AccessFileName .htaccess</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Mientras que procesa una petición el servidor busca
el primer fichero de configuración existente dentro de un listado de nombres en
cada directorio de la ruta del documento, si los ficheros distribuidos
de configuración están <a href="#allowoverride">habilitados para ese
directorio</a>. Por ejemplo:</p>
<div class="example"><p><code>
AccessFileName .acl
</code></p></div>
<p>antes de servir el documento
<code>/usr/local/web/index.html</code>, el servidor leerá
<code>/.acl</code>, <code>/usr/.acl</code>,
<code>/usr/local/.acl</code> and <code>/usr/local/web/.acl</code>
para las directivas, salvo que estén deshabilitadas with</p>
<div class="example"><p><code>
<Directory /><br />
<span class="indent">
AllowOverride None<br />
</span>
</Directory>
</code></p></div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#allowoverride">AllowOverride</a></code></li>
<li><a href="../configuring.html">Configuration Files</a></li>
<li><a href="../howto/htaccess.html">.htaccess Files</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="adddefaultcharset" id="adddefaultcharset">Directiva</a> <a name="AddDefaultCharset" id="AddDefaultCharset">AddDefaultCharset</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Default charset parameter to be added when a response
content-type is <code>text/plain</code> or <code>text/html</code></td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>AddDefaultCharset On|Off|<var>charset</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>AddDefaultCharset Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive specifies a default value for the media type
charset parameter (the name of a character encoding) to be added
to a response if and only if the response's content-type is either
<code>text/plain</code> or <code>text/html</code>. This should override
any charset specified in the body of the response via a <code>META</code>
element, though the exact behavior is often dependent on the user's client
configuration. A setting of <code>AddDefaultCharset Off</code>
disables this functionality. <code>AddDefaultCharset On</code> enables
a default charset of <code>iso-8859-1</code>. Any other value is assumed
to be the <var>charset</var> to be used, which should be one of the
<a href="http://www.iana.org/assignments/character-sets">IANA registered
charset values</a> for use in Internet media types (MIME types).
For example:</p>
<div class="example"><p><code>
AddDefaultCharset utf-8
</code></p></div>
<p><code class="directive">AddDefaultCharset</code> should only be used when all
of the text resources to which it applies are known to be in that
character encoding and it is too inconvenient to label their charset
individually. One such example is to add the charset parameter
to resources containing generated content, such as legacy CGI
scripts, that might be vulnerable to cross-site scripting attacks
due to user-provided data being included in the output. Note, however,
that a better solution is to just fix (or delete) those scripts, since
setting a default charset does not protect users that have enabled
the "auto-detect character encoding" feature on their browser.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="../mod/mod_mime.html#addcharset">AddCharset</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="allowencodedslashes" id="allowencodedslashes">Directiva</a> <a name="AllowEncodedSlashes" id="AllowEncodedSlashes">AllowEncodedSlashes</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Determines whether encoded path separators in URLs are allowed to
be passed through</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>AllowEncodedSlashes On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>AllowEncodedSlashes Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache httpd 2.0.46 and later</td></tr>
</table>
<p>The <code class="directive">AllowEncodedSlashes</code> directive allows URLs
which contain encoded path separators (<code>%2F</code> for <code>/</code>
and additionally <code>%5C</code> for <code>\</code> on according systems)
to be used. Normally such URLs are refused with a 404 (Not found) error.</p>
<p>Turning <code class="directive">AllowEncodedSlashes</code> <code>On</code> is
mostly useful when used in conjunction with <code>PATH_INFO</code>.</p>
<div class="note"><h3>Note</h3>
<p>Allowing encoded slashes does <em>not</em> imply <em>decoding</em>.
Occurrences of <code>%2F</code> or <code>%5C</code> (<em>only</em> on
according systems) will be left as such in the otherwise decoded URL
string.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#acceptpathinfo">AcceptPathInfo</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="allowoverride" id="allowoverride">Directiva</a> <a name="AllowOverride" id="AllowOverride">AllowOverride</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Types of directives that are allowed in
<code>.htaccess</code> files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>AllowOverride All|None|<var>directive-type</var>
[<var>directive-type</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>AllowOverride None (2.3.9 and later), AllowOverride All (2.3.8 and earlier)</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>When the server finds an <code>.htaccess</code> file (as
specified by <code class="directive"><a href="#accessfilename">AccessFileName</a></code>)
it needs to know which directives declared in that file can override
earlier configuration directives.</p>
<div class="note"><h3>Only available in <Directory> sections</h3>
<code class="directive">AllowOverride</code> is valid only in
<code class="directive"><a href="#directory"><Directory></a></code>
sections specified without regular expressions, not in <code class="directive"><a href="#location"><Location></a></code>, <code class="directive"><a href="#directorymatch"><DirectoryMatch></a></code> or
<code class="directive"><a href="#files"><Files></a></code> sections.
</div>
<p>When this directive is set to <code>None</code>, then
<a href="#accessfilename">.htaccess</a> files are completely ignored.
In this case, the server will not even attempt to read
<code>.htaccess</code> files in the filesystem.</p>
<p>When this directive is set to <code>All</code>, then any
directive which has the .htaccess <a href="directive-dict.html#Context">Context</a> is allowed in
<code>.htaccess</code> files.</p>
<p>The <var>directive-type</var> can be one of the following
groupings of directives.</p>
<dl>
<dt>AuthConfig</dt>
<dd>
Allow use of the authorization directives (<code class="directive"><a href="../mod/mod_authn_dbm.html#authdbmgroupfile">AuthDBMGroupFile</a></code>,
<code class="directive"><a href="../mod/mod_authn_dbm.html#authdbmuserfile">AuthDBMUserFile</a></code>,
<code class="directive"><a href="../mod/mod_authz_groupfile.html#authgroupfile">AuthGroupFile</a></code>,
<code class="directive"><a href="../mod/mod_authn_core.html#authname">AuthName</a></code>,
<code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code>, <code class="directive"><a href="../mod/mod_authn_file.html#authuserfile">AuthUserFile</a></code>, <code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code>, <em>etc.</em>).</dd>
<dt>FileInfo</dt>
<dd>
Allow use of the directives controlling document types
(<code class="directive"><a href="#errordocument">ErrorDocument</a></code>,
<code class="directive"><a href="#forcetype">ForceType</a></code>,
<code class="directive"><a href="../mod/mod_negotiation.html#languagepriority">LanguagePriority</a></code>,
<code class="directive"><a href="#sethandler">SetHandler</a></code>,
<code class="directive"><a href="#setinputfilter">SetInputFilter</a></code>,
<code class="directive"><a href="#setoutputfilter">SetOutputFilter</a></code>, and
<code class="module"><a href="../mod/mod_mime.html">mod_mime</a></code> Add* and Remove* directives),
document meta data (<code class="directive"><a href="../mod/mod_headers.html#header">Header</a></code>, <code class="directive"><a href="../mod/mod_headers.html#requestheader">RequestHeader</a></code>, <code class="directive"><a href="../mod/mod_setenvif.html#setenvif">SetEnvIf</a></code>, <code class="directive"><a href="../mod/mod_setenvif.html#setenvifnocase">SetEnvIfNoCase</a></code>, <code class="directive"><a href="../mod/mod_setenvif.html#browsermatch">BrowserMatch</a></code>, <code class="directive"><a href="../mod/mod_usertrack.html#cookieexpires">CookieExpires</a></code>, <code class="directive"><a href="../mod/mod_usertrack.html#cookiedomain">CookieDomain</a></code>, <code class="directive"><a href="../mod/mod_usertrack.html#cookiestyle">CookieStyle</a></code>, <code class="directive"><a href="../mod/mod_usertrack.html#cookietracking">CookieTracking</a></code>, <code class="directive"><a href="../mod/mod_usertrack.html#cookiename">CookieName</a></code>),
<code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code> directives <code class="directive"><a href="../mod/mod_rewrite.html#rewriteengine">RewriteEngine</a></code>, <code class="directive"><a href="../mod/mod_rewrite.html#rewriteoptions">RewriteOptions</a></code>, <code class="directive"><a href="../mod/mod_rewrite.html#rewritebase">RewriteBase</a></code>, <code class="directive"><a href="../mod/mod_rewrite.html#rewritecond">RewriteCond</a></code>, <code class="directive"><a href="../mod/mod_rewrite.html#rewriterule">RewriteRule</a></code>) and
<code class="directive"><a href="../mod/mod_actions.html#action">Action</a></code> from
<code class="module"><a href="../mod/mod_actions.html">mod_actions</a></code>.
</dd>
<dt>Indexes</dt>
<dd>
Allow use of the directives controlling directory indexing
(<code class="directive"><a href="../mod/mod_autoindex.html#adddescription">AddDescription</a></code>,
<code class="directive"><a href="../mod/mod_autoindex.html#addicon">AddIcon</a></code>, <code class="directive"><a href="../mod/mod_autoindex.html#addiconbyencoding">AddIconByEncoding</a></code>,
<code class="directive"><a href="../mod/mod_autoindex.html#addiconbytype">AddIconByType</a></code>,
<code class="directive"><a href="../mod/mod_autoindex.html#defaulticon">DefaultIcon</a></code>, <code class="directive"><a href="../mod/mod_dir.html#directoryindex">DirectoryIndex</a></code>, <code class="directive"><a href="../mod/mod_autoindex.html#fancyindexing">FancyIndexing</a></code>, <code class="directive"><a href="../mod/mod_autoindex.html#headername">HeaderName</a></code>, <code class="directive"><a href="../mod/mod_autoindex.html#indexignore">IndexIgnore</a></code>, <code class="directive"><a href="../mod/mod_autoindex.html#indexoptions">IndexOptions</a></code>, <code class="directive"><a href="../mod/mod_autoindex.html#readmename">ReadmeName</a></code>,
<em>etc.</em>).</dd>
<dt>Limit</dt>
<dd>
Allow use of the directives controlling host access (<code class="directive"><a href="../mod/mod_authz_host.html#allow">Allow</a></code>, <code class="directive"><a href="../mod/mod_authz_host.html#deny">Deny</a></code> and <code class="directive"><a href="../mod/mod_authz_host.html#order">Order</a></code>).</dd>
<dt>Options[=<var>Option</var>,...]</dt>
<dd>
Allow use of the directives controlling specific directory
features (<code class="directive"><a href="#options">Options</a></code> and
<code class="directive"><a href="../mod/mod_include.html#xbithack">XBitHack</a></code>).
An equal sign may be given followed by a comma (but no spaces)
separated lists of options that may be set using the <code class="directive"><a href="#options">Options</a></code> command.</dd>
</dl>
<p>Example:</p>
<div class="example"><p><code>
AllowOverride AuthConfig Indexes
</code></p></div>
<p>In the example above all directives that are neither in the group
<code>AuthConfig</code> nor <code>Indexes</code> cause an internal
server error.</p>
<div class="note"><p>For security and performance reasons, do not set
<code>AllowOverride</code> to anything other than <code>None</code>
in your <code><Directory /></code> block. Instead, find (or
create) the <code><Directory></code> block that refers to the
directory where you're actually planning to place a
<code>.htaccess</code> file.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#accessfilename">AccessFileName</a></code></li>
<li><a href="../configuring.html">Configuration Files</a></li>
<li><a href="../howto/htaccess.html">.htaccess Files</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="allowoverridelist" id="allowoverridelist">Directiva</a> <a name="AllowOverrideList" id="AllowOverrideList">AllowOverrideList</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Individual directives that are allowed in
<code>.htaccess</code> files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>AllowOverrideList None|<var>directive</var>
[<var>directive-type</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>AllowOverrideList None</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#accessfilename">AccessFileName</a></code></li>
<li><code class="directive"><a href="#allowoverride">AllowOverride</a></code></li>
<li><a href="../configuring.html">Configuration Files</a></li>
<li><a href="../howto/htaccess.html">.htaccess Files</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="cgimapextension" id="cgimapextension">Directiva</a> <a name="CGIMapExtension" id="CGIMapExtension">CGIMapExtension</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Technique for locating the interpreter for CGI
scripts</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>CGIMapExtension <var>cgi-path</var> <var>.extension</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>NetWare only</td></tr>
</table>
<p>This directive is used to control how Apache httpd finds the
interpreter used to run CGI scripts. For example, setting
<code>CGIMapExtension sys:\foo.nlm .foo</code> will
cause all CGI script files with a <code>.foo</code> extension to
be passed to the FOO interpreter.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="cgipassauth" id="cgipassauth">Directiva</a> <a name="CGIPassAuth" id="CGIPassAuth">CGIPassAuth</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Enables passing HTTP authorization headers to scripts as CGI
variables</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>CGIPassAuth On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>CGIPassAuth Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>AuthConfig</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 2.4.13 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="cgivar" id="cgivar">Directiva</a> <a name="CGIVar" id="CGIVar">CGIVar</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Controls how some CGI variables are set</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>CGIVar <var>variable</var> <var>rule</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 2.4.21 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="contentdigest" id="contentdigest">Directiva</a> <a name="ContentDigest" id="ContentDigest">ContentDigest</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Enables the generation of <code>Content-MD5</code> HTTP Response
headers</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ContentDigest On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ContentDigest Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>Options</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive enables the generation of
<code>Content-MD5</code> headers as defined in RFC1864
respectively RFC2616.</p>
<p>MD5 is an algorithm for computing a "message digest"
(sometimes called "fingerprint") of arbitrary-length data, with
a high degree of confidence that any alterations in the data
will be reflected in alterations in the message digest.</p>
<p>The <code>Content-MD5</code> header provides an end-to-end
message integrity check (MIC) of the entity-body. A proxy or
client may check this header for detecting accidental
modification of the entity-body in transit. Example header:</p>
<div class="example"><p><code>
Content-MD5: AuLb7Dp1rqtRtxz2m9kRpA==
</code></p></div>
<p>Note that this can cause performance problems on your server
since the message digest is computed on every request (the
values are not cached).</p>
<p><code>Content-MD5</code> is only sent for documents served
by the <code class="module"><a href="../mod/core.html">core</a></code>, and not by any module. For example,
SSI documents, output from CGI scripts, and byte range responses
do not have this header.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="defaultruntimedir" id="defaultruntimedir">Directiva</a> <a name="DefaultRuntimeDir" id="DefaultRuntimeDir">DefaultRuntimeDir</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Base directory for the server run-time files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>DefaultRuntimeDir <var>directory-path</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>DefaultRuntimeDir DEFAULT_REL_RUNTIMEDIR (logs/)</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache 2.4.2 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><a href="../misc/security_tips.html#serverroot">the
security tips</a> for information on how to properly set
permissions on the <code class="directive">ServerRoot</code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="defaulttype" id="defaulttype">Directiva</a> <a name="DefaultType" id="DefaultType">DefaultType</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>This directive has no effect other than to emit warnings
if the value is not <code>none</code>. In prior versions, DefaultType
would specify a default media type to assign to response content for
which no other media type configuration could be found.
</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>DefaultType <var>media-type|none</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>DefaultType none</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>The argument <code>none</code> is available in Apache httpd 2.2.7 and later. All other choices are DISABLED for 2.3.x and later.</td></tr>
</table>
<p>This directive has been disabled. For backwards compatibility
of configuration files, it may be specified with the value
<code>none</code>, meaning no default media type. For example:</p>
<div class="example"><p><code>
DefaultType None
</code></p></div>
<p><code>DefaultType None</code> is only available in
httpd-2.2.7 and later.</p>
<p>Use the mime.types configuration file and the
<code class="directive"><a href="../mod/mod_mime.html#addtype">AddType</a></code> to configure media
type assignments via file extensions, or the
<code class="directive"><a href="#forcetype">ForceType</a></code> directive to configure
the media type for specific resources. Otherwise, the server will
send the response without a Content-Type header field and the
recipient may attempt to guess the media type.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="define" id="define">Directiva</a> <a name="Define" id="Define">Define</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Define the existence of a variable</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>Define <var>parameter-name</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Equivalent to passing the <code>-D</code> argument to <code class="program"><a href="../programs/httpd.html">httpd</a></code>.</p>
<p>This directive can be used to toggle the use of <code class="directive"><a href="#ifdefine"><IfDefine></a></code> sections without needing to alter
<code>-D</code> arguments in any startup scripts.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="directory" id="directory">Directiva</a> <a name="Directory" id="Directory"><Directory></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Enclose a group of directives that apply only to the
named file-system directory, sub-directories, and their contents.</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><Directory <var>directory-path</var>>
... </Directory></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p><code class="directive"><Directory></code> and
<code></Directory></code> are used to enclose a group of
directives that will apply only to the named directory,
sub-directories of that directory, and the files within the respective
directories. Any directive that is allowed
in a directory context may be used. <var>Directory-path</var> is
either the full path to a directory, or a wild-card string using
Unix shell-style matching. In a wild-card string, <code>?</code> matches
any single character, and <code>*</code> matches any sequences of
characters. You may also use <code>[]</code> character ranges. None
of the wildcards match a `/' character, so <code><Directory
/*/public_html></code> will not match
<code>/home/user/public_html</code>, but <code><Directory
/home/*/public_html></code> will match. Example:</p>
<div class="example"><p><code>
<Directory /usr/local/httpd/htdocs><br />
<span class="indent">
Options Indexes FollowSymLinks<br />
</span>
</Directory>
</code></p></div>
<div class="note">
<p>Be careful with the <var>directory-path</var> arguments:
They have to literally match the filesystem path which Apache httpd uses
to access the files. Directives applied to a particular
<code><Directory></code> will not apply to files accessed from
that same directory via a different path, such as via different symbolic
links.</p>
</div>
<p><a class="glossarylink" href="../glossary.html#regex" title="ver glosario">Regular
expressions</a> can also be used, with the addition of the
<code>~</code> character. For example:</p>
<div class="example"><p><code>
<Directory ~ "^/www/.*/[0-9]{3}">
</code></p></div>
<p>would match directories in <code>/www/</code> that consisted of
three numbers.</p>
<p>If multiple (non-regular expression) <code class="directive"><Directory></code> sections
match the directory (or one of its parents) containing a document,
then the directives are applied in the order of shortest match
first, interspersed with the directives from the <a href="#accessfilename">.htaccess</a> files. For example,
with</p>
<div class="example"><p><code>
<Directory /><br />
<span class="indent">
AllowOverride None<br />
</span>
</Directory><br />
<br />
<Directory /home/><br />
<span class="indent">
AllowOverride FileInfo<br />
</span>
</Directory>
</code></p></div>
<p>for access to the document <code>/home/web/dir/doc.html</code>
the steps are:</p>
<ul>
<li>Apply directive <code>AllowOverride None</code>
(disabling <code>.htaccess</code> files).</li>
<li>Apply directive <code>AllowOverride FileInfo</code> (for
directory <code>/home</code>).</li>
<li>Apply any <code>FileInfo</code> directives in
<code>/home/.htaccess</code>, <code>/home/web/.htaccess</code> and
<code>/home/web/dir/.htaccess</code> in that order.</li>
</ul>
<p>Regular expressions are not considered until after all of the
normal sections have been applied. Then all of the regular
expressions are tested in the order they appeared in the
configuration file. For example, with</p>
<div class="example"><p><code>
<Directory ~ abc$><br />
<span class="indent">
# ... directives here ...<br />
</span>
</Directory>
</code></p></div>
<p>the regular expression section won't be considered until after
all normal <code class="directive"><Directory></code>s and
<code>.htaccess</code> files have been applied. Then the regular
expression will match on <code>/home/abc/public_html/abc</code> and
the corresponding <code class="directive"><Directory></code> will
be applied.</p>
<p><strong>Note that the default access for
<code><Directory /></code> is <code>Allow from All</code>.
This means that Apache httpd will serve any file mapped from an URL. It is
recommended that you change this with a block such
as</strong></p>
<div class="example"><p><code>
<Directory /><br />
<span class="indent">
Order Deny,Allow<br />
Deny from All<br />
</span>
</Directory>
</code></p></div>
<p><strong>and then override this for directories you
<em>want</em> accessible. See the <a href="../misc/security_tips.html">Security Tips</a> page for more
details.</strong></p>
<p>The directory sections occur in the <code>httpd.conf</code> file.
<code class="directive"><Directory></code> directives
cannot nest, and cannot appear in a <code class="directive"><a href="#limit"><Limit></a></code> or <code class="directive"><a href="#limitexcept"><LimitExcept></a></code> section.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../sections.html">How <Directory>,
<Location> and <Files> sections work</a> for an
explanation of how these different sections are combined when a
request is received</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="directorymatch" id="directorymatch">Directiva</a> <a name="DirectoryMatch" id="DirectoryMatch"><DirectoryMatch></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Enclose directives that apply to
the contents of file-system directories matching a regular expression.</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><DirectoryMatch <var>regex</var>>
... </DirectoryMatch></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p><code class="directive"><DirectoryMatch></code> and
<code></DirectoryMatch></code> are used to enclose a group
of directives which will apply only to the named directory (and the files within),
the same as <code class="directive"><a href="#directory"><Directory></a></code>.
However, it takes as an argument a
<a class="glossarylink" href="../glossary.html#regex" title="ver glosario">regular expression</a>. For example:</p>
<div class="example"><p><code>
<DirectoryMatch "^/www/(.+/)?[0-9]{3}">
</code></p></div>
<p>would match directories in <code>/www/</code> that consisted of three
numbers.</p>
<div class="note"><h3>Compatability</h3>
Prior to 2.3.9, this directive implicitly applied to sub-directories
(like <code class="directive"><a href="#directory"><Directory></a></code>) and
could not match the end of line symbol ($). In 2.3.9 and later,
only directories that match the expression are affected by the enclosed
directives.
</div>
<div class="note"><h3>Trailing Slash</h3>
This directive applies to requests for directories that may or may
not end in a trailing slash, so expressions that are anchored to the
end of line ($) must be written with care.
</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#directory"><Directory></a></code> for
a description of how regular expressions are mixed in with normal
<code class="directive"><Directory></code>s</li>
<li><a href="../sections.html">How <Directory>, <Location> and
<Files> sections work</a> for an explanation of how these different
sections are combined when a request is received</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="documentroot" id="documentroot">Directiva</a> <a name="DocumentRoot" id="DocumentRoot">DocumentRoot</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Directory that forms the main document tree visible
from the web</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>DocumentRoot <var>directory-path</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>DocumentRoot /usr/local/apache/htdocs</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive sets the directory from which <code class="program"><a href="../programs/httpd.html">httpd</a></code>
will serve files. Unless matched by a directive like <code class="directive"><a href="../mod/mod_alias.html#alias">Alias</a></code>, the server appends the
path from the requested URL to the document root to make the
path to the document. Example:</p>
<div class="example"><p><code>
DocumentRoot /usr/web
</code></p></div>
<p>then an access to
<code>http://www.my.host.com/index.html</code> refers to
<code>/usr/web/index.html</code>. If the <var>directory-path</var> is
not absolute then it is assumed to be relative to the <code class="directive"><a href="#serverroot">ServerRoot</a></code>.</p>
<p>The <code class="directive">DocumentRoot</code> should be specified without
a trailing slash.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../urlmapping.html#documentroot">Mapping URLs to Filesystem
Locations</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="else" id="else">Directiva</a> <a name="Else" id="Else"><Else></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Contains directives that apply only if the condition of a
previous <code class="directive"><a href="#if"><If></a></code> or
<code class="directive"><a href="#elseif"><ElseIf></a></code> section is not
satisfied by a request at runtime</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><Else> ... </Else></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Nested conditions are evaluated in 2.4.26 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#if"><If></a></code></li>
<li><code class="directive"><a href="#elseif"><ElseIf></a></code></li>
<li><a href="../sections.html">How <Directory>, <Location>,
<Files> sections work</a> for an explanation of how these
different sections are combined when a request is received.
<code class="directive"><If></code>,
<code class="directive"><ElseIf></code>, and
<code class="directive"><Else></code> are applied last.</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="elseif" id="elseif">Directiva</a> <a name="ElseIf" id="ElseIf"><ElseIf></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Contains directives that apply only if a condition is satisfied
by a request at runtime while the condition of a previous
<code class="directive"><a href="#if"><If></a></code> or
<code class="directive"><ElseIf></code> section is not
satisfied</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><ElseIf <var>expression</var>> ... </ElseIf></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Nested conditions are evaluated in 2.4.26 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><a href="../expr.html">Expressions in Apache HTTP Server</a>,
for a complete reference and more examples.</li>
<li><code class="directive"><a href="#if"><If></a></code></li>
<li><code class="directive"><a href="#else"><Else></a></code></li>
<li><a href="../sections.html">How <Directory>, <Location>,
<Files> sections work</a> for an explanation of how these
different sections are combined when a request is received.
<code class="directive"><If></code>,
<code class="directive"><ElseIf></code>, and
<code class="directive"><Else></code> are applied last.</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="enablemmap" id="enablemmap">Directiva</a> <a name="EnableMMAP" id="EnableMMAP">EnableMMAP</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Use memory-mapping to read files during delivery</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>EnableMMAP On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>EnableMMAP On</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive controls whether the <code class="program"><a href="../programs/httpd.html">httpd</a></code> may use
memory-mapping if it needs to read the contents of a file during
delivery. By default, when the handling of a request requires
access to the data within a file -- for example, when delivering a
server-parsed file using <code class="module"><a href="../mod/mod_include.html">mod_include</a></code> -- Apache httpd
memory-maps the file if the OS supports it.</p>
<p>This memory-mapping sometimes yields a performance improvement.
But in some environments, it is better to disable the memory-mapping
to prevent operational problems:</p>
<ul>
<li>On some multiprocessor systems, memory-mapping can reduce the
performance of the <code class="program"><a href="../programs/httpd.html">httpd</a></code>.</li>
<li>Deleting or truncating a file while <code class="program"><a href="../programs/httpd.html">httpd</a></code>
has it memory-mapped can cause <code class="program"><a href="../programs/httpd.html">httpd</a></code> to
crash with a segmentation fault.
</li>
</ul>
<p>For server configurations that are vulnerable to these problems,
you should disable memory-mapping of delivered files by specifying:</p>
<div class="example"><p><code>
EnableMMAP Off
</code></p></div>
<p>For NFS mounted files, this feature may be disabled explicitly for
the offending files by specifying:</p>
<div class="example"><p><code>
<Directory "/path-to-nfs-files">
<span class="indent">
EnableMMAP Off
</span>
</Directory>
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="enablesendfile" id="enablesendfile">Directiva</a> <a name="EnableSendfile" id="EnableSendfile">EnableSendfile</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Use the kernel sendfile support to deliver files to the client</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>EnableSendfile On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>EnableSendfile Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in version 2.0.44 and later. Default changed to Off in
version 2.3.9.</td></tr>
</table>
<p>This directive controls whether <code class="program"><a href="../programs/httpd.html">httpd</a></code> may use the
sendfile support from the kernel to transmit file contents to the client.
By default, when the handling of a request requires no access
to the data within a file -- for example, when delivering a
static file -- Apache httpd uses sendfile to deliver the file contents
without ever reading the file if the OS supports it.</p>
<p>This sendfile mechanism avoids separate read and send operations,
and buffer allocations. But on some platforms or within some
filesystems, it is better to disable this feature to avoid
operational problems:</p>
<ul>
<li>Some platforms may have broken sendfile support that the build
system did not detect, especially if the binaries were built on
another box and moved to such a machine with broken sendfile
support.</li>
<li>On Linux the use of sendfile triggers TCP-checksum
offloading bugs on certain networking cards when using IPv6.</li>
<li>On Linux on Itanium, sendfile may be unable to handle files
over 2GB in size.</li>
<li>With a network-mounted <code class="directive"><a href="#documentroot">DocumentRoot</a></code> (e.g., NFS, SMB, CIFS, FUSE),
the kernel may be unable to serve the network file through
its own cache.</li>
</ul>
<p>For server configurations that are not vulnerable to these problems,
you may enable this feature by specifying:</p>
<div class="example"><p><code>
EnableSendfile On
</code></p></div>
<p>For network mounted files, this feature may be disabled explicitly
for the offending files by specifying:</p>
<div class="example"><p><code>
<Directory "/path-to-nfs-files">
<span class="indent">
EnableSendfile Off
</span>
</Directory>
</code></p></div>
<p>Please note that the per-directory and .htaccess configuration
of <code class="directive">EnableSendfile</code> is not supported by
<code class="module"><a href="../mod/mod_cache_disk.html">mod_cache_disk</a></code>.
Only global definition of <code class="directive">EnableSendfile</code>
is taken into account by the module.
</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="error" id="error">Directiva</a> <a name="Error" id="Error">Error</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Abort configuration parsing with a custom error message</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>Error <var>message</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>2.3.9 and later</td></tr>
</table>
<p>If an error can be detected within the configuration, this
directive can be used to generate a custom error message, and halt
configuration parsing. The typical use is for reporting required
modules which are missing from the configuration.</p>
<div class="example"><h3>Example</h3><p><code>
# ensure that mod_include is loaded<br />
<IfModule !include_module><br />
Error mod_include is required by mod_foo. Load it with LoadModule.<br />
</IfModule><br />
<br />
# ensure that exactly one of SSL,NOSSL is defined<br />
<IfDefine SSL><br />
<IfDefine NOSSL><br />
Error Both SSL and NOSSL are defined. Define only one of them.<br />
</IfDefine><br />
</IfDefine><br />
<IfDefine !SSL><br />
<IfDefine !NOSSL><br />
Error Either SSL or NOSSL must be defined.<br />
</IfDefine><br />
</IfDefine><br />
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="errordocument" id="errordocument">Directiva</a> <a name="ErrorDocument" id="ErrorDocument">ErrorDocument</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>What the server will return to the client
in case of an error</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ErrorDocument <var>error-code</var> <var>document</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>In the event of a problem or error, Apache httpd can be configured
to do one of four things,</p>
<ol>
<li>output a simple hardcoded error message</li>
<li>output a customized message</li>
<li>redirect to a local <var>URL-path</var> to handle the
problem/error</li>
<li>redirect to an external <var>URL</var> to handle the
problem/error</li>
</ol>
<p>The first option is the default, while options 2-4 are
configured using the <code class="directive">ErrorDocument</code>
directive, which is followed by the HTTP response code and a URL
or a message. Apache httpd will sometimes offer additional information
regarding the problem/error.</p>
<p>URLs can begin with a slash (/) for local web-paths (relative
to the <code class="directive"><a href="#documentroot">DocumentRoot</a></code>), or be a
full URL which the client can resolve. Alternatively, a message
can be provided to be displayed by the browser. Examples:</p>
<div class="example"><p><code>
ErrorDocument 500 http://foo.example.com/cgi-bin/tester<br />
ErrorDocument 404 /cgi-bin/bad_urls.pl<br />
ErrorDocument 401 /subscription_info.html<br />
ErrorDocument 403 "Sorry can't allow you access today"
</code></p></div>
<p>Additionally, the special value <code>default</code> can be used
to specify Apache httpd's simple hardcoded message. While not required
under normal circumstances, <code>default</code> will restore
Apache httpd's simple hardcoded message for configurations that would
otherwise inherit an existing <code class="directive">ErrorDocument</code>.</p>
<div class="example"><p><code>
ErrorDocument 404 /cgi-bin/bad_urls.pl<br /><br />
<Directory /web/docs><br />
<span class="indent">
ErrorDocument 404 default<br />
</span>
</Directory>
</code></p></div>
<p>Note that when you specify an <code class="directive">ErrorDocument</code>
that points to a remote URL (ie. anything with a method such as
<code>http</code> in front of it), Apache HTTP Server will send a redirect to the
client to tell it where to find the document, even if the
document ends up being on the same server. This has several
implications, the most important being that the client will not
receive the original error status code, but instead will
receive a redirect status code. This in turn can confuse web
robots and other clients which try to determine if a URL is
valid using the status code. In addition, if you use a remote
URL in an <code>ErrorDocument 401</code>, the client will not
know to prompt the user for a password since it will not
receive the 401 status code. Therefore, <strong>if you use an
<code>ErrorDocument 401</code> directive then it must refer to a local
document.</strong></p>
<p>Microsoft Internet Explorer (MSIE) will by default ignore
server-generated error messages when they are "too small" and substitute
its own "friendly" error messages. The size threshold varies depending on
the type of error, but in general, if you make your error document
greater than 512 bytes, then MSIE will show the server-generated
error rather than masking it. More information is available in
Microsoft Knowledge Base article <a href="http://support.microsoft.com/default.aspx?scid=kb;en-us;Q294807">Q294807</a>.</p>
<p>Although most error messages can be overriden, there are certain
circumstances where the internal messages are used regardless of the
setting of <code class="directive"><a href="#errordocument">ErrorDocument</a></code>. In
particular, if a malformed request is detected, normal request processing
will be immediately halted and the internal error message returned.
This is necessary to guard against security problems caused by
bad requests.</p>
<p>If you are using mod_proxy, you may wish to enable
<code class="directive"><a href="../mod/mod_proxy.html#proxyerroroverride">ProxyErrorOverride</a></code> so that you can provide
custom error messages on behalf of your Origin servers. If you don't enable ProxyErrorOverride,
Apache httpd will not generate custom error documents for proxied content.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../custom-error.html">documentation of
customizable responses</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="errorlog" id="errorlog">Directiva</a> <a name="ErrorLog" id="ErrorLog">ErrorLog</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Location where the server will log errors</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code> ErrorLog <var>file-path</var>|syslog[:<var>facility</var>]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ErrorLog logs/error_log (Unix) ErrorLog logs/error.log (Windows and OS/2)</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">ErrorLog</code> directive sets the name of
the file to which the server will log any errors it encounters. If
the <var>file-path</var> is not absolute then it is assumed to be
relative to the <code class="directive"><a href="#serverroot">ServerRoot</a></code>.</p>
<div class="example"><h3>Example</h3><p><code>
ErrorLog /var/log/httpd/error_log
</code></p></div>
<p>If the <var>file-path</var>
begins with a pipe character "<code>|</code>" then it is assumed to be a
command to spawn to handle the error log.</p>
<div class="example"><h3>Example</h3><p><code>
ErrorLog "|/usr/local/bin/httpd_errors"
</code></p></div>
<p>See the notes on <a href="../logs.html#piped">piped logs</a> for
more information.</p>
<p>Using <code>syslog</code> instead of a filename enables logging
via syslogd(8) if the system supports it. The default is to use
syslog facility <code>local7</code>, but you can override this by
using the <code>syslog:<var>facility</var></code> syntax where
<var>facility</var> can be one of the names usually documented in
syslog(1). The facility is effectively global, and if it is changed
in individual virtual hosts, the final facility specified affects the
entire server.</p>
<div class="example"><h3>Example</h3><p><code>
ErrorLog syslog:user
</code></p></div>
<p>SECURITY: See the <a href="../misc/security_tips.html#serverroot">security tips</a>
document for details on why your security could be compromised
if the directory where log files are stored is writable by
anyone other than the user that starts the server.</p>
<div class="warning"><h3>Note</h3>
<p>When entering a file path on non-Unix platforms, care should be taken
to make sure that only forward slashed are used even though the platform
may allow the use of back slashes. In general it is a good idea to always
use forward slashes throughout the configuration files.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#loglevel">LogLevel</a></code></li>
<li><a href="../logs.html">Apache HTTP Server Log Files</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="errorlogformat" id="errorlogformat">Directiva</a> <a name="ErrorLogFormat" id="ErrorLogFormat">ErrorLogFormat</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Format specification for error log entries</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code> ErrorLog [connection|request] <var>format</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache httpd 2.3.9 and later</td></tr>
</table>
<p><code class="directive">ErrorLogFormat</code> allows to specify what
supplementary information is logged in the error log in addition to the
actual log message.</p>
<div class="example"><h3>Simple example</h3><p><code>
ErrorLogFormat "[%t] [%l] [pid %P] %F: %E: [client %a] %M"
</code></p></div>
<p>Specifying <code>connection</code> or <code>request</code> as first
paramter allows to specify additional formats, causing additional
information to be logged when the first message is logged for a specific
connection or request, respectivly. This additional information is only
logged once per connection/request. If a connection or request is processed
without causing any log message, the additional information is not logged
either.</p>
<p>It can happen that some format string items do not produce output. For
example, the Referer header is only present if the log message is
associated to a request and the log message happens at a time when the
Referer header has already been read from the client. If no output is
produced, the default behaviour is to delete everything from the preceeding
space character to the next space character. This means the log line is
implicitly divided into fields on non-whitespace to whitespace transitions.
If a format string item does not produce output, the whole field is
ommitted. For example, if the remote address <code>%a</code> in the log
format <code>[%t] [%l] [%a] %M </code> is not available, the surrounding
brackets are not logged either. Space characters can be escaped with a
backslash to prevent them from delimiting a field. The combination '% '
(percent space) is a zero-witdh field delimiter that does not produce any
output.</p>
<p>The above behaviour can be changed by adding modifiers to the format
string item. A <code>-</code> (minus) modifier causes a minus to be logged if the
respective item does not produce any output. In once-per-connection/request
formats, it is also possible to use the <code>+</code> (plus) modifier. If an
item with the plus modifier does not produce any output, the whole line is
ommitted.</p>
<p>A number as modifier can be used to assign a log severity level to a
format item. The item will only be logged if the severity of the log
message is not higher than the specified log severity level. The number can
range from 1 (alert) over 4 (warn) and 7 (debug) to 15 (trace8).</p>
<p>Some format string items accept additional parameters in braces.</p>
<table class="bordered"><tr class="header"><th>Format String</th> <th>Description</th></tr>
<tr><td><code>%%</code></td>
<td>The percent sign</td></tr>
<tr class="odd"><td><code>%...a</code></td>
<td>Remote IP-address and port</td></tr>
<tr><td><code>%...A</code></td>
<td>Local IP-address and port</td></tr>
<tr class="odd"><td><code>%...{name}e</code></td>
<td>Request environment variable <code>name</code></td></tr>
<tr><td><code>%...E</code></td>
<td>APR/OS error status code and string</td></tr>
<tr class="odd"><td><code>%...F</code></td>
<td>Source file name and line number of the log call</td></tr>
<tr><td><code>%...{name}i</code></td>
<td>Request header <code>name</code></td></tr>
<tr class="odd"><td><code>%...k</code></td>
<td>Number of keep-alive requests on this connection</td></tr>
<tr><td><code>%...l</code></td>
<td>Loglevel of the message</td></tr>
<tr class="odd"><td><code>%...L</code></td>
<td>Log ID of the request</td></tr>
<tr><td><code>%...{c}L</code></td>
<td>Log ID of the connection</td></tr>
<tr class="odd"><td><code>%...{C}L</code></td>
<td>Log ID of the connection if used in connection scope, empty otherwise</td></tr>
<tr><td><code>%...m</code></td>
<td>Name of the module logging the message</td></tr>
<tr class="odd"><td><code>%M</code></td>
<td>The actual log message</td></tr>
<tr><td><code>%...{name}n</code></td>
<td>Request note <code>name</code></td></tr>
<tr class="odd"><td><code>%...P</code></td>
<td>Process ID of current process</td></tr>
<tr><td><code>%...T</code></td>
<td>Thread ID of current thread</td></tr>
<tr class="odd"><td><code>%...t</code></td>
<td>The current time</td></tr>
<tr><td><code>%...{u}t</code></td>
<td>The current time including micro-seconds</td></tr>
<tr class="odd"><td><code>%...{cu}t</code></td>
<td>The current time in compact ISO 8601 format, including
micro-seconds</td></tr>
<tr><td><code>%...v</code></td>
<td>The canonical <code class="directive"><a href="#servername">ServerName</a></code>
of the current server.</td></tr>
<tr class="odd"><td><code>%...V</code></td>
<td>The server name of the server serving the request according to the
<code class="directive"><a href="#usecanonicalname">UseCanonicalName</a></code>
setting.</td></tr>
<tr><td><code>\ </code> (backslash space)</td>
<td>Non-field delimiting space</td></tr>
<tr class="odd"><td><code>% </code> (percent space)</td>
<td>Field delimiter (no output)</td></tr>
</table>
<p>The log ID format <code>%L</code> produces a unique id for a connection
or request. This can be used to correlate which log lines belong to the
same connection or request, which request happens on which connection.
A <code>%L</code> format string is also available in
<code class="module"><a href="../mod/mod_log_config.html">mod_log_config</a></code>, to allow to correlate access log entries
with error log lines. If <code class="module"><a href="../mod/mod_unique_id.html">mod_unique_id</a></code> is loaded, its
unique id will be used as log ID for requests.</p>
<div class="example"><h3>Example (somewhat similar to default format)</h3><p><code>
ErrorLogFormat "[%{u}t] [%-m:%l] [pid %P] %7F: %E: [client\ %a]
%M% ,\ referer\ %{Referer}i"
</code></p></div>
<div class="example"><h3>Example (similar to the 2.2.x format)</h3><p><code>
ErrorLogFormat "[%t] [%l] %7F: %E: [client\ %a]
%M% ,\ referer\ %{Referer}i"
</code></p></div>
<div class="example"><h3>Advanced example with request/connection log IDs</h3><p><code>
ErrorLogFormat "[%{uc}t] [%-m:%-l] [R:%L] [C:%{C}L] %7F: %E: %M"<br />
ErrorLogFormat request "[%{uc}t] [R:%L] Request %k on C:%{c}L pid:%P tid:%T"<br />
ErrorLogFormat request "[%{uc}t] [R:%L] UA:'%+{User-Agent}i'"<br />
ErrorLogFormat request "[%{uc}t] [R:%L] Referer:'%+{Referer}i'"<br />
ErrorLogFormat connection "[%{uc}t] [C:%{c}L] local\ %a remote\ %A"<br />
</code></p></div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#errorlog">ErrorLog</a></code></li>
<li><code class="directive"><a href="#loglevel">LogLevel</a></code></li>
<li><a href="../logs.html">Apache HTTP Server Log Files</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="extendedstatus" id="extendedstatus">Directiva</a> <a name="ExtendedStatus" id="ExtendedStatus">ExtendedStatus</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Keep track of extended status information for each
request</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ExtendedStatus On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ExtendedStatus Off[*]</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This option tracks additional data per worker about the
currently executing request, and a utilization summary; you
can see these variables during runtime by configuring
<code class="module"><a href="../mod/mod_status.html">mod_status</a></code>. Note that other modules may
rely on this scoreboard.</p>
<p>This setting applies to the entire server, and cannot be
enabled or disabled on a virtualhost-by-virtualhost basis.
The collection of extended status information can slow down
the server. Also note that this setting cannot be changed
during a graceful restart.</p>
<div class="note">
<p>Note that loading <code class="module"><a href="../mod/mod_status.html">mod_status</a></code> will change
the default behavior to ExtendedStatus On, while other
third party modules may do the same. Such modules rely on
collecting detailed information about the state of all workers.
The default is changed by <code class="module"><a href="../mod/mod_status.html">mod_status</a></code> beginning
with version 2.3.6; the previous default was always Off.</p>
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="fileetag" id="fileetag">Directiva</a> <a name="FileETag" id="FileETag">FileETag</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>File attributes used to create the ETag
HTTP response header for static files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>FileETag <var>component</var> ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>FileETag INode MTime Size</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>
The <code class="directive">FileETag</code> directive configures the file
attributes that are used to create the <code>ETag</code> (entity
tag) response header field when the document is based on a static file.
(The <code>ETag</code> value is used in cache management to save
network bandwidth.) The
<code class="directive">FileETag</code> directive allows you to choose
which of these -- if any -- should be used. The recognized keywords are:
</p>
<dl>
<dt><strong>INode</strong></dt>
<dd>The file's i-node number will be included in the calculation</dd>
<dt><strong>MTime</strong></dt>
<dd>The date and time the file was last modified will be included</dd>
<dt><strong>Size</strong></dt>
<dd>The number of bytes in the file will be included</dd>
<dt><strong>All</strong></dt>
<dd>All available fields will be used. This is equivalent to:
<div class="example"><p><code>FileETag INode MTime Size</code></p></div></dd>
<dt><strong>None</strong></dt>
<dd>If a document is file-based, no <code>ETag</code> field will be
included in the response</dd>
</dl>
<p>The <code>INode</code>, <code>MTime</code>, and <code>Size</code>
keywords may be prefixed with either <code>+</code> or <code>-</code>,
which allow changes to be made to the default setting inherited
from a broader scope. Any keyword appearing without such a prefix
immediately and completely cancels the inherited setting.</p>
<p>If a directory's configuration includes
<code>FileETag INode MTime Size</code>, and a
subdirectory's includes <code>FileETag -INode</code>,
the setting for that subdirectory (which will be inherited by
any sub-subdirectories that don't override it) will be equivalent to
<code>FileETag MTime Size</code>.</p>
<div class="warning"><h3>Warning</h3>
Do not change the default for directories or locations that have WebDAV
enabled and use <code class="module"><a href="../mod/mod_dav_fs.html">mod_dav_fs</a></code> as a storage provider.
<code class="module"><a href="../mod/mod_dav_fs.html">mod_dav_fs</a></code> uses <code>INode MTime Size</code>
as a fixed format for <code>ETag</code> comparisons on conditional requests.
These conditional requests will break if the <code>ETag</code> format is
changed via <code class="directive">FileETag</code>.
</div>
<div class="note"><h3>Server Side Includes</h3>
An ETag is not generated for responses parsed by <code class="module"><a href="../mod/mod_include.html">mod_include</a></code>,
since the response entity can change without a change of the INode, MTime, or Size
of the static file with embedded SSI directives.
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="files" id="files">Directiva</a> <a name="Files" id="Files"><Files></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Contains directives that apply to matched
filenames</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><Files <var>filename</var>> ... </Files></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive"><Files></code> directive
limits the scope of the enclosed directives by filename. It is comparable
to the <code class="directive"><a href="#directory"><Directory></a></code>
and <code class="directive"><a href="#location"><Location></a></code>
directives. It should be matched with a <code></Files></code>
directive. The directives given within this section will be applied to
any object with a basename (last component of filename) matching the
specified filename. <code class="directive"><Files></code>
sections are processed in the order they appear in the
configuration file, after the <code class="directive"><a href="#directory"><Directory></a></code> sections and
<code>.htaccess</code> files are read, but before <code class="directive"><a href="#location"><Location></a></code> sections. Note
that <code class="directive"><Files></code> can be nested
inside <code class="directive"><a href="#directory"><Directory></a></code> sections to restrict the
portion of the filesystem they apply to.</p>
<p>The <var>filename</var> argument should include a filename, or
a wild-card string, where <code>?</code> matches any single character,
and <code>*</code> matches any sequences of characters.
<a class="glossarylink" href="../glossary.html#regex" title="ver glosario">Regular expressions</a>
can also be used, with the addition of the
<code>~</code> character. For example:</p>
<div class="example"><p><code>
<Files ~ "\.(gif|jpe?g|png)$">
</code></p></div>
<p>would match most common Internet graphics formats. <code class="directive"><a href="#filesmatch"><FilesMatch></a></code> is preferred,
however.</p>
<p>Note that unlike <code class="directive"><a href="#directory"><Directory></a></code> and <code class="directive"><a href="#location"><Location></a></code> sections, <code class="directive"><Files></code> sections can be used inside
<code>.htaccess</code> files. This allows users to control access to
their own files, at a file-by-file level.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../sections.html">How <Directory>, <Location>
and <Files> sections work</a> for an explanation of how these
different sections are combined when a request is received</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="filesmatch" id="filesmatch">Directiva</a> <a name="FilesMatch" id="FilesMatch"><FilesMatch></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Contains directives that apply to regular-expression matched
filenames</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><FilesMatch <var>regex</var>> ... </FilesMatch></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive"><FilesMatch></code> directive
limits the scope of the enclosed directives by filename, just as the
<code class="directive"><a href="#files"><Files></a></code> directive
does. However, it accepts a <a class="glossarylink" href="../glossary.html#regex" title="ver glosario">regular
expression</a>. For example:</p>
<div class="example"><p><code>
<FilesMatch "\.(gif|jpe?g|png)$">
</code></p></div>
<p>would match most common Internet graphics formats.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../sections.html">How <Directory>, <Location>
and <Files> sections work</a> for an explanation of how these
different sections are combined when a request is received</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="flushmaxpipelined" id="flushmaxpipelined">Directiva</a> <a name="FlushMaxPipelined" id="FlushMaxPipelined">FlushMaxPipelined</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Maximum number of pipelined responses above which they are flushed
to the network</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>FlushMaxPipelined <var>number</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>FlushMaxPipelined 5</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>2.4.47 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="flushmaxthreshold" id="flushmaxthreshold">Directiva</a> <a name="FlushMaxThreshold" id="FlushMaxThreshold">FlushMaxThreshold</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Threshold above which pending data are flushed to the
network</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>FlushMaxThreshold <var>number-of-bytes</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>FlushMaxThreshold 65536</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>2.4.47 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="forcetype" id="forcetype">Directiva</a> <a name="ForceType" id="ForceType">ForceType</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Forces all matching files to be served with the specified
media type in the HTTP Content-Type header field</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ForceType <var>media-type</var>|None</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Moved to the core in Apache httpd 2.0</td></tr>
</table>
<p>When placed into an <code>.htaccess</code> file or a
<code class="directive"><a href="#directory"><Directory></a></code>, or
<code class="directive"><a href="#location"><Location></a></code> or
<code class="directive"><a href="#files"><Files></a></code>
section, this directive forces all matching files to be served
with the content type identification given by
<var>media-type</var>. For example, if you had a directory full of
GIF files, but did not want to label them all with <code>.gif</code>,
you might want to use:</p>
<div class="example"><p><code>
ForceType image/gif
</code></p></div>
<p>Note that this directive overrides other indirect media type
associations defined in mime.types or via the
<code class="directive"><a href="../mod/mod_mime.html#addtype">AddType</a></code>.</p>
<p>You can also override more general
<code class="directive">ForceType</code> settings
by using the value of <code>None</code>:</p>
<div class="example"><p><code>
# force all files to be image/gif:<br />
<Location /images><br />
<span class="indent">
ForceType image/gif<br />
</span>
</Location><br />
<br />
# but normal mime-type associations here:<br />
<Location /images/mixed><br />
<span class="indent">
ForceType None<br />
</span>
</Location>
</code></p></div>
<p>This directive primarily overrides the content types generated for
static files served out of the filesystem. For resources other than
static files, where the generator of the response typically specifies
a Content-Type, this directive has no effect.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="gprofdir" id="gprofdir">Directiva</a> <a name="GprofDir" id="GprofDir">GprofDir</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Directory to write gmon.out profiling data to. </td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>GprofDir <var>/tmp/gprof/</var>|<var>/tmp/gprof/</var>%</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>When the server has been compiled with gprof profiling support,
<code class="directive">GprofDir</code> causes <code>gmon.out</code> files to
be written to the specified directory when the process exits. If the
argument ends with a percent symbol ('%'), subdirectories are created
for each process id.</p>
<p>This directive currently only works with the <code class="module"><a href="../mod/prefork.html">prefork</a></code>
MPM.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="hostnamelookups" id="hostnamelookups">Directiva</a> <a name="HostnameLookups" id="HostnameLookups">HostnameLookups</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Enables DNS lookups on client IP addresses</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>HostnameLookups On|Off|Double</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>HostnameLookups Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive enables DNS lookups so that host names can be
logged (and passed to CGIs/SSIs in <code>REMOTE_HOST</code>).
The value <code>Double</code> refers to doing double-reverse
DNS lookup. That is, after a reverse lookup is performed, a forward
lookup is then performed on that result. At least one of the IP
addresses in the forward lookup must match the original
address. (In "tcpwrappers" terminology this is called
<code>PARANOID</code>.)</p>
<p>Regardless of the setting, when <code class="module"><a href="../mod/mod_authz_host.html">mod_authz_host</a></code> is
used for controlling access by hostname, a double reverse lookup
will be performed. This is necessary for security. Note that the
result of this double-reverse isn't generally available unless you
set <code>HostnameLookups Double</code>. For example, if only
<code>HostnameLookups On</code> and a request is made to an object
that is protected by hostname restrictions, regardless of whether
the double-reverse fails or not, CGIs will still be passed the
single-reverse result in <code>REMOTE_HOST</code>.</p>
<p>The default is <code>Off</code> in order to save the network
traffic for those sites that don't truly need the reverse
lookups done. It is also better for the end users because they
don't have to suffer the extra latency that a lookup entails.
Heavily loaded sites should leave this directive
<code>Off</code>, since DNS lookups can take considerable
amounts of time. The utility <code class="program"><a href="../programs/logresolve.html">logresolve</a></code>, compiled by
default to the <code>bin</code> subdirectory of your installation
directory, can be used to look up host names from logged IP addresses
offline.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="httpprotocoloptions" id="httpprotocoloptions">Directiva</a> <a name="HttpProtocolOptions" id="HttpProtocolOptions">HttpProtocolOptions</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Modify restrictions on HTTP Request Messages</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>HttpProtocolOptions [Strict|Unsafe] [RegisteredMethods|LenientMethods]
[Allow0.9|Require1.0]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>HttpProtocolOptions Strict LenientMethods Allow0.9</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>2.2.32 or 2.4.24 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="if" id="if">Directiva</a> <a name="If" id="If"><If></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Contains directives that apply only if a condition is
satisfied by a request at runtime</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><If <var>expression</var>> ... </If></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive"><If></code> directive
evaluates an expression at runtime, and applies the enclosed
directives if and only if the expression evaluates to true.
For example:</p>
<div class="example"><p><code>
<If "$req{Host} = ''">
</code></p></div>
<p>would match HTTP/1.0 requests without a <var>Host:</var> header.</p>
<p>You may compare the value of any variable in the request headers
($req), response headers ($resp) or environment ($env) in your
expression.</p>
<p>Apart from <code>=</code>, <code>If</code> can use the <code>IN</code>
operator to compare if the expression is in a given range:</p>
<div class="example"><p><code>
<If %{REQUEST_METHOD} IN GET,HEAD,OPTIONS>
</code></p></div>
<h3>Consulte también</h3>
<ul>
<li><a href="../expr.html">Expressions in Apache HTTP Server</a>,
for a complete reference and more examples.</li>
<li><a href="../sections.html">How <Directory>, <Location>,
<Files> sections work</a> for an explanation of how these
different sections are combined when a request is received.
<code class="directive"><If></code> has the same precedence
and usage as <code class="directive"><Files></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="ifdefine" id="ifdefine">Directiva</a> <a name="IfDefine" id="IfDefine"><IfDefine></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Encloses directives that will be processed only
if a test is true at startup</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><IfDefine [!]<var>parameter-name</var>> ...
</IfDefine></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code><IfDefine <var>test</var>>...</IfDefine>
</code> section is used to mark directives that are conditional. The
directives within an <code class="directive"><IfDefine></code>
section are only processed if the <var>test</var> is true. If <var>
test</var> is false, everything between the start and end markers is
ignored.</p>
<p>The <var>test</var> in the <code class="directive"><IfDefine></code> section directive can be one of two forms:</p>
<ul>
<li><var>parameter-name</var></li>
<li><code>!</code><var>parameter-name</var></li>
</ul>
<p>In the former case, the directives between the start and end
markers are only processed if the parameter named
<var>parameter-name</var> is defined. The second format reverses
the test, and only processes the directives if
<var>parameter-name</var> is <strong>not</strong> defined.</p>
<p>The <var>parameter-name</var> argument is a define as given on the
<code class="program"><a href="../programs/httpd.html">httpd</a></code> command line via <code>-D<var>parameter</var>
</code> at the time the server was started or by the <code class="directive"><a href="#define">Define</a></code> directive.</p>
<p><code class="directive"><IfDefine></code> sections are
nest-able, which can be used to implement simple
multiple-parameter tests. Example:</p>
<div class="example"><p><code>
httpd -DReverseProxy -DUseCache -DMemCache ...<br />
<br />
# httpd.conf<br />
<IfDefine ReverseProxy><br />
<span class="indent">
LoadModule proxy_module modules/mod_proxy.so<br />
LoadModule proxy_http_module modules/mod_proxy_http.so<br />
<IfDefine UseCache><br />
<span class="indent">
LoadModule cache_module modules/mod_cache.so<br />
<IfDefine MemCache><br />
<span class="indent">
LoadModule mem_cache_module modules/mod_mem_cache.so<br />
</span>
</IfDefine><br />
<IfDefine !MemCache><br />
<span class="indent">
LoadModule cache_disk_module modules/mod_cache_disk.so<br />
</span>
</IfDefine>
</span>
</IfDefine>
</span>
</IfDefine>
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="ifdirective" id="ifdirective">Directiva</a> <a name="IfDirective" id="IfDirective"><IfDirective></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Encloses directives that are processed conditional on the
presence or absence of a specific directive</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><IfDirective [!]<var>directive-name</var>> ...
</IfDirective></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in 2.4.34 and later.</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#ifsection"><IfSection></a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="iffile" id="iffile">Directiva</a> <a name="IfFile" id="IfFile"><IfFile></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Encloses directives that will be processed only
if file exists at startup</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><IfFile [!]<var>filename</var>> ...
</IfFile></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in 2.4.34 and later.</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="ifmodule" id="ifmodule">Directiva</a> <a name="IfModule" id="IfModule"><IfModule></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Encloses directives that are processed conditional on the
presence or absence of a specific module</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><IfModule [!]<var>module-file</var>|<var>module-identifier</var>> ...
</IfModule></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Module identifiers are available in version 2.1 and
later.</td></tr>
</table>
<p>The <code><IfModule <var>test</var>>...</IfModule></code>
section is used to mark directives that are conditional on the presence of
a specific module. The directives within an <code class="directive"><IfModule></code> section are only processed if the <var>test</var>
is true. If <var>test</var> is false, everything between the start and
end markers is ignored.</p>
<p>The <var>test</var> in the <code class="directive"><IfModule></code> section directive can be one of two forms:</p>
<ul>
<li><var>module</var></li>
<li>!<var>module</var></li>
</ul>
<p>In the former case, the directives between the start and end
markers are only processed if the module named <var>module</var>
is included in Apache httpd -- either compiled in or
dynamically loaded using <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code>. The second format reverses the test,
and only processes the directives if <var>module</var> is
<strong>not</strong> included.</p>
<p>The <var>module</var> argument can be either the module identifier or
the file name of the module, at the time it was compiled. For example,
<code>rewrite_module</code> is the identifier and
<code>mod_rewrite.c</code> is the file name. If a module consists of
several source files, use the name of the file containing the string
<code>STANDARD20_MODULE_STUFF</code>.</p>
<p><code class="directive"><IfModule></code> sections are
nest-able, which can be used to implement simple multiple-module
tests.</p>
<div class="note">This section should only be used if you need to have one
configuration file that works whether or not a specific module
is available. In normal operation, directives need not be
placed in <code class="directive"><IfModule></code>
sections.</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="ifsection" id="ifsection">Directiva</a> <a name="IfSection" id="IfSection"><IfSection></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Encloses directives that are processed conditional on the
presence or absence of a specific section directive</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><IfSection [!]<var>section-name</var>> ...
</IfSection></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in 2.4.34 and later.</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#ifdirective"><IfDirective></a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="include" id="include">Directiva</a> <a name="Include" id="Include">Include</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Includes other configuration files from within
the server configuration files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>Include [<var>optional</var>|<var>strict</var>] <var>file-path</var>|<var>directory-path</var>|<var>wildcard</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Wildcard matching available in 2.0.41 and later, directory
wildcard matching available in 2.3.6 and later</td></tr>
</table>
<p>This directive allows inclusion of other configuration files
from within the server configuration files.</p>
<p>Shell-style (<code>fnmatch()</code>) wildcard characters can be used
in the filename or directory parts of the path to include several files
at once, in alphabetical order. In addition, if
<code class="directive">Include</code> points to a directory, rather than a file,
Apache httpd will read all files in that directory and any subdirectory.
However, including entire directories is not recommended, because it is
easy to accidentally leave temporary files in a directory that can cause
<code class="program"><a href="../programs/httpd.html">httpd</a></code> to fail. Instead, we encourage you to use the
wildcard syntax shown below, to include files that match a particular
pattern, such as *.conf, for example.</p>
<p>When a wildcard is specified for a <strong>file</strong> component of
the path, and no file matches the wildcard, the
<code class="directive"><a href="#include">Include</a></code>
directive will be <strong>silently ignored</strong>. When a wildcard is
specified for a <strong>directory</strong> component of the path, and
no directory matches the wildcard, the
<code class="directive"><a href="#include">Include</a></code> directive will
<strong>fail with an error</strong> saying the directory cannot be found.
</p>
<p>For further control over the behaviour of the server when no files or
directories match, prefix the path with the modifiers <var>optional</var>
or <var>strict</var>. If <var>optional</var> is specified, any wildcard
file or directory that does not match will be silently ignored. If
<var>strict</var> is specified, any wildcard file or directory that does
not match at least one file will cause server startup to fail.</p>
<p>When a directory or file component of the path is
specified exactly, and that directory or file does not exist,
<code class="directive"><a href="#include">Include</a></code> directive will fail with an
error saying the file or directory cannot be found.</p>
<p>The file path specified may be an absolute path, or may be relative
to the <code class="directive"><a href="#serverroot">ServerRoot</a></code> directory.</p>
<p>Examples:</p>
<div class="example"><p><code>
Include /usr/local/apache2/conf/ssl.conf<br />
Include /usr/local/apache2/conf/vhosts/*.conf
</code></p></div>
<p>Or, providing paths relative to your <code class="directive"><a href="#serverroot">ServerRoot</a></code> directory:</p>
<div class="example"><p><code>
Include conf/ssl.conf<br />
Include conf/vhosts/*.conf
</code></p></div>
<p>Wildcards may be included in the directory or file portion of the
path. In the following example, the server will fail to load if no
directories match conf/vhosts/*, but will load successfully if no
files match *.conf.</p>
<div class="example"><p><code>
Include conf/vhosts/*/vhost.conf<br />
Include conf/vhosts/*/*.conf
</code></p></div>
<p>In this example, the server will fail to load if either
conf/vhosts/* matches no directories, or if *.conf matches no files:</p>
<div class="example"><p><code>
Include strict conf/vhosts/*/*.conf
</code></p></div>
<p>In this example, the server load successfully if either conf/vhosts/*
matches no directories, or if *.conf matches no files:</p>
<div class="example"><p><code>
Include optional conf/vhosts/*/*.conf
</code></p></div>
<h3>Consulte también</h3>
<ul>
<li><code class="program"><a href="../programs/apachectl.html">apachectl</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="includeoptional" id="includeoptional">Directiva</a> <a name="IncludeOptional" id="IncludeOptional">IncludeOptional</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Includes other configuration files from within
the server configuration files</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>IncludeOptional <var>file-path</var>|<var>directory-path</var>|<var>wildcard</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in 2.3.6 and later. Not existent file paths without wildcards
do not cause SyntaxError after 2.4.30</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#include">Include</a></code></li>
<li><code class="program"><a href="../programs/apachectl.html">apachectl</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="keepalive" id="keepalive">Directiva</a> <a name="KeepAlive" id="KeepAlive">KeepAlive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Enables HTTP persistent connections</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>KeepAlive On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>KeepAlive On</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The Keep-Alive extension to HTTP/1.0 and the persistent
connection feature of HTTP/1.1 provide long-lived HTTP sessions
which allow multiple requests to be sent over the same TCP
connection. In some cases this has been shown to result in an
almost 50% speedup in latency times for HTML documents with
many images. To enable Keep-Alive connections, set
<code>KeepAlive On</code>.</p>
<p>For HTTP/1.0 clients, Keep-Alive connections will only be
used if they are specifically requested by a client. In
addition, a Keep-Alive connection with an HTTP/1.0 client can
only be used when the length of the content is known in
advance. This implies that dynamic content such as CGI output,
SSI pages, and server-generated directory listings will
generally not use Keep-Alive connections to HTTP/1.0 clients.
For HTTP/1.1 clients, persistent connections are the default
unless otherwise specified. If the client requests it, chunked
encoding will be used in order to send content of unknown
length over persistent connections.</p>
<p>When a client uses a Keep-Alive connection it will be counted
as a single "request" for the <code class="directive"><a href="../mod/mpm_common.html#maxconnectionsperchild">MaxConnectionsPerChild</a></code> directive, regardless
of how many requests are sent using the connection.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#maxkeepaliverequests">MaxKeepAliveRequests</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="keepalivetimeout" id="keepalivetimeout">Directiva</a> <a name="KeepAliveTimeout" id="KeepAliveTimeout">KeepAliveTimeout</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Amount of time the server will wait for subsequent
requests on a persistent connection</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>KeepAliveTimeout <var>num</var>[ms]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>KeepAliveTimeout 5</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Specifying a value in milliseconds is available in
Apache httpd 2.3.2 and later</td></tr>
</table>
<p>The number of seconds Apache httpd will wait for a subsequent
request before closing the connection. By adding a postfix of ms the
timeout can be also set in milliseconds. Once a request has been
received, the timeout value specified by the
<code class="directive"><a href="#timeout">Timeout</a></code> directive applies.</p>
<p>Setting <code class="directive">KeepAliveTimeout</code> to a high value
may cause performance problems in heavily loaded servers. The
higher the timeout, the more server processes will be kept
occupied waiting on connections with idle clients.</p>
<p>In a name-based virtual host context, the value of the first
defined virtual host (the default host) in a set of <code class="directive"><a href="#namevirtualhost">NameVirtualHost</a></code> will be used.
The other values will be ignored.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limit" id="limit">Directiva</a> <a name="Limit" id="Limit"><Limit></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Restrict enclosed access controls to only certain HTTP
methods</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><Limit <var>method</var> [<var>method</var>] ... > ...
</Limit></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>AuthConfig, Limit</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Access controls are normally effective for
<strong>all</strong> access methods, and this is the usual
desired behavior. <strong>In the general case, access control
directives should not be placed within a
<code class="directive"><Limit></code> section.</strong></p>
<p>The purpose of the <code class="directive"><Limit></code>
directive is to restrict the effect of the access controls to the
nominated HTTP methods. For all other methods, the access
restrictions that are enclosed in the <code class="directive"><Limit></code> bracket <strong>will have no
effect</strong>. The following example applies the access control
only to the methods <code>POST</code>, <code>PUT</code>, and
<code>DELETE</code>, leaving all other methods unprotected:</p>
<div class="example"><p><code>
<Limit POST PUT DELETE><br />
<span class="indent">
Require valid-user<br />
</span>
</Limit>
</code></p></div>
<p>The method names listed can be one or more of: <code>GET</code>,
<code>POST</code>, <code>PUT</code>, <code>DELETE</code>,
<code>CONNECT</code>, <code>OPTIONS</code>,
<code>PATCH</code>, <code>PROPFIND</code>, <code>PROPPATCH</code>,
<code>MKCOL</code>, <code>COPY</code>, <code>MOVE</code>,
<code>LOCK</code>, and <code>UNLOCK</code>. <strong>The method name is
case-sensitive.</strong> If <code>GET</code> is used it will also
restrict <code>HEAD</code> requests. The <code>TRACE</code> method
cannot be limited (see <code class="directive"><a href="#traceenable">TraceEnable</a></code>).</p>
<div class="warning">A <code class="directive"><a href="#limitexcept"><LimitExcept></a></code> section should always be
used in preference to a <code class="directive"><Limit></code>
section when restricting access, since a <code class="directive"><a href="#limitexcept"><LimitExcept></a></code> section provides protection
against arbitrary methods.</div>
<p>The <code class="directive"><Limit></code> and
<code class="directive"><a href="#limitexcept"><LimitExcept></a></code>
directives may be nested. In this case, each successive level of
<code class="directive"><Limit></code> or <code class="directive"><a href="#limitexcept"><LimitExcept></a></code> directives must
further restrict the set of methods to which access controls apply.</p>
<div class="warning">When using
<code class="directive"><Limit></code> or
<code class="directive"><LimitExcept></code> directives with
the <code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code> directive,
note that the first <code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code>
to succeed authorizes the request, regardless of the presence of other
<code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code> directives.</div>
<p>For example, given the following configuration, all users will
be authorized for <code>POST</code> requests, and the
<code>Require group editors</code> directive will be ignored
in all cases:</p>
<div class="example"><p><code>
<LimitExcept GET>
<span class="indent">
Require valid-user
</span>
</LimitExcept><br />
<Limit POST>
<span class="indent">
Require group editors
</span>
</Limit>
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limitexcept" id="limitexcept">Directiva</a> <a name="LimitExcept" id="LimitExcept"><LimitExcept></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Restrict access controls to all HTTP methods
except the named ones</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><LimitExcept <var>method</var> [<var>method</var>] ... > ...
</LimitExcept></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>AuthConfig, Limit</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p><code class="directive"><LimitExcept></code> and
<code></LimitExcept></code> are used to enclose
a group of access control directives which will then apply to any
HTTP access method <strong>not</strong> listed in the arguments;
i.e., it is the opposite of a <code class="directive"><a href="#limit"><Limit></a></code> section and can be used to control
both standard and nonstandard/unrecognized methods. See the
documentation for <code class="directive"><a href="#limit"><Limit></a></code> for more details.</p>
<p>For example:</p>
<div class="example"><p><code>
<LimitExcept POST GET><br />
<span class="indent">
Require valid-user<br />
</span>
</LimitExcept>
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limitinternalrecursion" id="limitinternalrecursion">Directiva</a> <a name="LimitInternalRecursion" id="LimitInternalRecursion">LimitInternalRecursion</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Determine maximum number of internal redirects and nested
subrequests</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>LimitInternalRecursion <var>number</var> [<var>number</var>]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>LimitInternalRecursion 10</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache httpd 2.0.47 and later</td></tr>
</table>
<p>An internal redirect happens, for example, when using the <code class="directive"><a href="../mod/mod_actions.html#action">Action</a></code> directive, which internally
redirects the original request to a CGI script. A subrequest is Apache httpd's
mechanism to find out what would happen for some URI if it were requested.
For example, <code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> uses subrequests to look for the
files listed in the <code class="directive"><a href="../mod/mod_dir.html#directoryindex">DirectoryIndex</a></code>
directive.</p>
<p><code class="directive">LimitInternalRecursion</code> prevents the server
from crashing when entering an infinite loop of internal redirects or
subrequests. Such loops are usually caused by misconfigurations.</p>
<p>The directive stores two different limits, which are evaluated on
per-request basis. The first <var>number</var> is the maximum number of
internal redirects, that may follow each other. The second <var>number</var>
determines, how deep subrequests may be nested. If you specify only one
<var>number</var>, it will be assigned to both limits.</p>
<div class="example"><h3>Example</h3><p><code>
LimitInternalRecursion 5
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limitrequestbody" id="limitrequestbody">Directiva</a> <a name="LimitRequestBody" id="LimitRequestBody">LimitRequestBody</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Restricts the total size of the HTTP request body sent
from the client</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>LimitRequestBody <var>bytes</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>LimitRequestBody 0</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive specifies the number of <var>bytes</var> from 0
(meaning unlimited) to 2147483647 (2GB) that are allowed in a
request body. See the note below for the limited applicability
to proxy requests.</p>
<p>The <code class="directive">LimitRequestBody</code> directive allows
the user to set a limit on the allowed size of an HTTP request
message body within the context in which the directive is given
(server, per-directory, per-file or per-location). If the client
request exceeds that limit, the server will return an error
response instead of servicing the request. The size of a normal
request message body will vary greatly depending on the nature of
the resource and the methods allowed on that resource. CGI scripts
typically use the message body for retrieving form information.
Implementations of the <code>PUT</code> method will require
a value at least as large as any representation that the server
wishes to accept for that resource.</p>
<p>This directive gives the server administrator greater
control over abnormal client request behavior, which may be
useful for avoiding some forms of denial-of-service
attacks.</p>
<p>If, for example, you are permitting file upload to a particular
location, and wish to limit the size of the uploaded file to 100K,
you might use the following directive:</p>
<div class="example"><p><code>
LimitRequestBody 102400
</code></p></div>
<div class="note"><p>For a full description of how this directive is interpreted by
proxy requests, see the <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> documentation.</p>
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limitrequestfields" id="limitrequestfields">Directiva</a> <a name="LimitRequestFields" id="LimitRequestFields">LimitRequestFields</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Limits the number of HTTP request header fields that
will be accepted from the client</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>LimitRequestFields <var>number</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>LimitRequestFields 100</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p><var>Number</var> is an integer from 0 (meaning unlimited) to
32767. The default value is defined by the compile-time
constant <code>DEFAULT_LIMIT_REQUEST_FIELDS</code> (100 as
distributed).</p>
<p>The <code class="directive">LimitRequestFields</code> directive allows
the server administrator to modify the limit on the number of
request header fields allowed in an HTTP request. A server needs
this value to be larger than the number of fields that a normal
client request might include. The number of request header fields
used by a client rarely exceeds 20, but this may vary among
different client implementations, often depending upon the extent
to which a user has configured their browser to support detailed
content negotiation. Optional HTTP extensions are often expressed
using request header fields.</p>
<p>This directive gives the server administrator greater
control over abnormal client request behavior, which may be
useful for avoiding some forms of denial-of-service attacks.
The value should be increased if normal clients see an error
response from the server that indicates too many fields were
sent in the request.</p>
<p>For example:</p>
<div class="example"><p><code>
LimitRequestFields 50
</code></p></div>
<div class="warning"><h3>Warning</h3>
<p> When name-based virtual hosting is used, the value for this
directive is taken from the default (first-listed) virtual host for the
<code class="directive">NameVirtualHost</code> the connection was mapped to.</p>
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limitrequestfieldsize" id="limitrequestfieldsize">Directiva</a> <a name="LimitRequestFieldSize" id="LimitRequestFieldSize">LimitRequestFieldSize</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Limits the size of the HTTP request header allowed from the
client</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>LimitRequestFieldSize <var>bytes</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>LimitRequestFieldSize 8190</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive specifies the number of <var>bytes</var>
that will be allowed in an HTTP request header.</p>
<p>The <code class="directive">LimitRequestFieldSize</code> directive
allows the server administrator to reduce or increase the limit
on the allowed size of an HTTP request header field. A server
needs this value to be large enough to hold any one header field
from a normal client request. The size of a normal request header
field will vary greatly among different client implementations,
often depending upon the extent to which a user has configured
their browser to support detailed content negotiation. SPNEGO
authentication headers can be up to 12392 bytes.</p>
<p>This directive gives the server administrator greater
control over abnormal client request behavior, which may be
useful for avoiding some forms of denial-of-service attacks.</p>
<p>For example:</p>
<div class="example"><p><code>
LimitRequestFieldSize 4094
</code></p></div>
<div class="note">Under normal conditions, the value should not be changed from
the default.</div>
<div class="warning"><h3>Warning</h3>
<p> When name-based virtual hosting is used, the value for this
directive is taken from the default (first-listed) virtual host for the
<code class="directive">NameVirtualHost</code> the connection was mapped to.</p>
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limitrequestline" id="limitrequestline">Directiva</a> <a name="LimitRequestLine" id="LimitRequestLine">LimitRequestLine</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Limit the size of the HTTP request line that will be accepted
from the client</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>LimitRequestLine <var>bytes</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>LimitRequestLine 8190</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive sets the number of <var>bytes</var> that will be
allowed on the HTTP request-line.</p>
<p>The <code class="directive">LimitRequestLine</code> directive allows
the server administrator to reduce or increase the limit on the allowed size
of a client's HTTP request-line. Since the request-line consists of the
HTTP method, URI, and protocol version, the
<code class="directive">LimitRequestLine</code> directive places a
restriction on the length of a request-URI allowed for a request
on the server. A server needs this value to be large enough to
hold any of its resource names, including any information that
might be passed in the query part of a <code>GET</code> request.</p>
<p>This directive gives the server administrator greater
control over abnormal client request behavior, which may be
useful for avoiding some forms of denial-of-service attacks.</p>
<p>For example:</p>
<div class="example"><p><code>
LimitRequestLine 4094
</code></p></div>
<div class="note">Under normal conditions, the value should not be changed from
the default.</div>
<div class="warning"><h3>Warning</h3>
<p> When name-based virtual hosting is used, the value for this
directive is taken from the default (first-listed) virtual host for the
<code class="directive">NameVirtualHost</code> the connection was mapped to.</p>
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="limitxmlrequestbody" id="limitxmlrequestbody">Directiva</a> <a name="LimitXMLRequestBody" id="LimitXMLRequestBody">LimitXMLRequestBody</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Limits the size of an XML-based request body</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>LimitXMLRequestBody <var>bytes</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>LimitXMLRequestBody 1000000</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Limit (in bytes) on maximum size of an XML-based request
body. A value of <code>0</code> will disable any checking.</p>
<p>Example:</p>
<div class="example"><p><code>
LimitXMLRequestBody 0
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="location" id="location">Directiva</a> <a name="Location" id="Location"><Location></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Applies the enclosed directives only to matching
URLs</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><Location
<var>URL-path</var>|<var>URL</var>> ... </Location></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive"><Location></code> directive
limits the scope of the enclosed directives by URL. It is similar to the
<code class="directive"><a href="#directory"><Directory></a></code>
directive, and starts a subsection which is terminated with a
<code></Location></code> directive. <code class="directive"><Location></code> sections are processed in the
order they appear in the configuration file, after the <code class="directive"><a href="#directory"><Directory></a></code> sections and
<code>.htaccess</code> files are read, and after the <code class="directive"><a href="#files"><Files></a></code> sections.</p>
<p><code class="directive"><Location></code> sections operate
completely outside the filesystem. This has several consequences.
Most importantly, <code class="directive"><Location></code>
directives should not be used to control access to filesystem
locations. Since several different URLs may map to the same
filesystem location, such access controls may by circumvented.</p>
<p>The enclosed directives will be applied to the request if the path component
of the URL meets <em>any</em> of the following criteria:
</p>
<ul>
<li>The specified location matches exactly the path component of the URL.
</li>
<li>The specified location, which ends in a forward slash, is a prefix
of the path component of the URL (treated as a context root).
</li>
<li>The specified location, with the addition of a trailing slash, is a
prefix of the path component of the URL (also treated as a context root).
</li>
</ul>
<p>
In the example below, where no trailing slash is used, requests to
/private1, /private1/ and /private1/file.txt will have the enclosed
directives applied, but /private1other would not.
</p>
<div class="example"><p><code>
<Location /private1>
...
</code></p></div>
<p>
In the example below, where a trailing slash is used, requests to
/private2/ and /private2/file.txt will have the enclosed
directives applied, but /private2 and /private2other would not.
</p>
<div class="example"><p><code>
<Location /private2<em>/</em>>
...
</code></p></div>
<div class="note"><h3>When to use <code class="directive"><Location></code></h3>
<p>Use <code class="directive"><Location></code> to apply
directives to content that lives outside the filesystem. For
content that lives in the filesystem, use <code class="directive"><a href="#directory"><Directory></a></code> and <code class="directive"><a href="#files"><Files></a></code>. An exception is
<code><Location /></code>, which is an easy way to
apply a configuration to the entire server.</p>
</div>
<p>For all origin (non-proxy) requests, the URL to be matched is a
URL-path of the form <code>/path/</code>. <em>No scheme, hostname,
port, or query string may be included.</em> For proxy requests, the
URL to be matched is of the form
<code>scheme://servername/path</code>, and you must include the
prefix.</p>
<p>The URL may use wildcards. In a wild-card string, <code>?</code> matches
any single character, and <code>*</code> matches any sequences of
characters. Neither wildcard character matches a / in the URL-path.</p>
<p><a class="glossarylink" href="../glossary.html#regex" title="ver glosario">Regular expressions</a>
can also be used, with the addition of the <code>~</code>
character. For example:</p>
<div class="example"><p><code>
<Location ~ "/(extra|special)/data">
</code></p></div>
<p>would match URLs that contained the substring <code>/extra/data</code>
or <code>/special/data</code>. The directive <code class="directive"><a href="#locationmatch"><LocationMatch></a></code> behaves
identical to the regex version of <code class="directive"><Location></code>, and is preferred, for the
simple reason that <code>~</code> is hard to distinguish from
<code>-</code> in many fonts.</p>
<p>The <code class="directive"><Location></code>
functionality is especially useful when combined with the
<code class="directive"><a href="#sethandler">SetHandler</a></code>
directive. For example, to enable status requests, but allow them
only from browsers at <code>example.com</code>, you might use:</p>
<div class="example"><p><code>
<Location /status><br />
<span class="indent">
SetHandler server-status<br />
Require host example.com<br />
</span>
</Location>
</code></p></div>
<div class="note"><h3>Note about / (slash)</h3>
<p>The slash character has special meaning depending on where in a
URL it appears. People may be used to its behavior in the filesystem
where multiple adjacent slashes are frequently collapsed to a single
slash (<em>i.e.</em>, <code>/home///foo</code> is the same as
<code>/home/foo</code>). In URL-space this is not necessarily true.
The <code class="directive"><a href="#locationmatch"><LocationMatch></a></code>
directive and the regex version of <code class="directive"><Location></code> require you to explicitly specify multiple
slashes if that is your intention.</p>
<p>For example, <code><LocationMatch ^/abc></code> would match
the request URL <code>/abc</code> but not the request URL <code>
//abc</code>. The (non-regex) <code class="directive"><Location></code> directive behaves similarly when used for
proxy requests. But when (non-regex) <code class="directive"><Location></code> is used for non-proxy requests it will
implicitly match multiple slashes with a single slash. For example,
if you specify <code><Location /abc/def></code> and the
request is to <code>/abc//def</code> then it will match.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><a href="../sections.html">How <Directory>, <Location>
and <Files> sections work</a> for an explanation of how these
different sections are combined when a request is received.</li>
<li><code class="directive"><a href="#locationmatch">LocationMatch</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="locationmatch" id="locationmatch">Directiva</a> <a name="LocationMatch" id="LocationMatch"><LocationMatch></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Applies the enclosed directives only to regular-expression
matching URLs</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><LocationMatch
<var>regex</var>> ... </LocationMatch></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive"><LocationMatch></code> directive
limits the scope of the enclosed directives by URL, in an identical manner
to <code class="directive"><a href="#location"><Location></a></code>. However,
it takes a <a class="glossarylink" href="../glossary.html#regex" title="ver glosario">regular expression</a>
as an argument instead of a simple string. For example:</p>
<div class="example"><p><code>
<LocationMatch "/(extra|special)/data">
</code></p></div>
<p>would match URLs that contained the substring <code>/extra/data</code>
or <code>/special/data</code>.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../sections.html">How <Directory>, <Location>
and <Files> sections work</a> for an explanation of how these
different sections are combined when a request is received</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="loglevel" id="loglevel">Directiva</a> <a name="LogLevel" id="LogLevel">LogLevel</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Controls the verbosity of the ErrorLog</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>LogLevel [<var>module</var>:]<var>level</var>
[<var>module</var>:<var>level</var>] ...
</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>LogLevel warn</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Per-module and per-directory configuration is available in
Apache HTTP Server 2.3.6 and later</td></tr>
</table>
<p><code class="directive">LogLevel</code> adjusts the verbosity of the
messages recorded in the error logs (see <code class="directive"><a href="#errorlog">ErrorLog</a></code> directive). The following
<var>level</var>s are available, in order of decreasing
significance:</p>
<table class="bordered">
<tr>
<th><strong>Level</strong> </th>
<th><strong>Description</strong> </th>
<th><strong>Example</strong> </th>
</tr>
<tr>
<td><code>emerg</code> </td>
<td>Emergencies - system is unusable.</td>
<td>"Child cannot open lock file. Exiting"</td>
</tr>
<tr>
<td><code>alert</code> </td>
<td>Action must be taken immediately.</td>
<td>"getpwuid: couldn't determine user name from uid"</td>
</tr>
<tr>
<td><code>crit</code> </td>
<td>Critical Conditions.</td>
<td>"socket: Failed to get a socket, exiting child"</td>
</tr>
<tr>
<td><code>error</code> </td>
<td>Error conditions.</td>
<td>"Premature end of script headers"</td>
</tr>
<tr>
<td><code>warn</code> </td>
<td>Warning conditions.</td>
<td>"child process 1234 did not exit, sending another
SIGHUP"</td>
</tr>
<tr>
<td><code>notice</code> </td>
<td>Normal but significant condition.</td>
<td>"httpd: caught SIGBUS, attempting to dump core in
..."</td>
</tr>
<tr>
<td><code>info</code> </td>
<td>Informational.</td>
<td>"Server seems busy, (you may need to increase
StartServers, or Min/MaxSpareServers)..."</td>
</tr>
<tr>
<td><code>debug</code> </td>
<td>Debug-level messages</td>
<td>"Opening config file ..."</td>
</tr>
<tr>
<td><code>trace1</code> </td>
<td>Trace messages</td>
<td>"proxy: FTP: control connection complete"</td>
</tr>
<tr>
<td><code>trace2</code> </td>
<td>Trace messages</td>
<td>"proxy: CONNECT: sending the CONNECT request to the remote proxy"</td>
</tr>
<tr>
<td><code>trace3</code> </td>
<td>Trace messages</td>
<td>"openssl: Handshake: start"</td>
</tr>
<tr>
<td><code>trace4</code> </td>
<td>Trace messages</td>
<td>"read from buffered SSL brigade, mode 0, 17 bytes"</td>
</tr>
<tr>
<td><code>trace5</code> </td>
<td>Trace messages</td>
<td>"map lookup FAILED: map=rewritemap key=keyname"</td>
</tr>
<tr>
<td><code>trace6</code> </td>
<td>Trace messages</td>
<td>"cache lookup FAILED, forcing new map lookup"</td>
</tr>
<tr>
<td><code>trace7</code> </td>
<td>Trace messages, dumping large amounts of data</td>
<td>"| 0000: 02 23 44 30 13 40 ac 34 df 3d bf 9a 19 49 39 15 |"</td>
</tr>
<tr>
<td><code>trace8</code> </td>
<td>Trace messages, dumping large amounts of data</td>
<td>"| 0000: 02 23 44 30 13 40 ac 34 df 3d bf 9a 19 49 39 15 |"</td>
</tr>
</table>
<p>When a particular level is specified, messages from all
other levels of higher significance will be reported as well.
<em>E.g.</em>, when <code>LogLevel info</code> is specified,
then messages with log levels of <code>notice</code> and
<code>warn</code> will also be posted.</p>
<p>Using a level of at least <code>crit</code> is
recommended.</p>
<p>For example:</p>
<div class="example"><p><code>
LogLevel notice
</code></p></div>
<div class="note"><h3>Note</h3>
<p>When logging to a regular file messages of the level
<code>notice</code> cannot be suppressed and thus are always
logged. However, this doesn't apply when logging is done
using <code>syslog</code>.</p>
</div>
<p>Specifying a level without a module name will reset the level
for all modules to that level. Specifying a level with a module
name will set the level for that module only. It is possible to
use the module source file name, the module identifier, or the
module identifier with the trailing <code>_module</code> omitted
as module specification. This means the following three specifications
are equivalent:</p>
<div class="example"><p><code>
LogLevel info ssl:warn<br />
LogLevel info mod_ssl.c:warn<br />
LogLevel info ssl_module:warn<br />
</code></p></div>
<p>It is also possible to change the level per directory:</p>
<div class="example"><p><code>
LogLevel info<br />
<Directory /usr/local/apache/htdocs/app><br />
LogLevel debug<br />
</Files>
</code></p></div>
<div class="note">
Per directory loglevel configuration only affects messages that are
logged after the request has been parsed and that are associated with
the request. Log messages which are associated with the connection or
the server are not affected.
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="maxkeepaliverequests" id="maxkeepaliverequests">Directiva</a> <a name="MaxKeepAliveRequests" id="MaxKeepAliveRequests">MaxKeepAliveRequests</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Number of requests allowed on a persistent
connection</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>MaxKeepAliveRequests <var>number</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>MaxKeepAliveRequests 100</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">MaxKeepAliveRequests</code> directive
limits the number of requests allowed per connection when
<code class="directive"><a href="#keepalive">KeepAlive</a></code> is on. If it is
set to <code>0</code>, unlimited requests will be allowed. We
recommend that this setting be kept to a high value for maximum
server performance.</p>
<p>For example:</p>
<div class="example"><p><code>
MaxKeepAliveRequests 500
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="maxrangeoverlaps" id="maxrangeoverlaps">Directiva</a> <a name="MaxRangeOverlaps" id="MaxRangeOverlaps">MaxRangeOverlaps</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Number of overlapping ranges (eg: <code>100-200,150-300</code>) allowed before returning the complete
resource </td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>MaxRangeOverlaps default | unlimited | none | <var>number-of-ranges</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>MaxRangeOverlaps 20</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 2.3.15 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="maxrangereversals" id="maxrangereversals">Directiva</a> <a name="MaxRangeReversals" id="MaxRangeReversals">MaxRangeReversals</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Number of range reversals (eg: <code>100-200,50-70</code>) allowed before returning the complete
resource </td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>MaxRangeReversals default | unlimited | none | <var>number-of-ranges</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>MaxRangeReversals 20</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 2.3.15 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="maxranges" id="maxranges">Directiva</a> <a name="MaxRanges" id="MaxRanges">MaxRanges</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Number of ranges allowed before returning the complete
resource </td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>MaxRanges default | unlimited | none | <var>number-of-ranges</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>MaxRanges 200</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 2.3.15 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="mergeslashes" id="mergeslashes">Directiva</a> <a name="MergeSlashes" id="MergeSlashes">MergeSlashes</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Controls whether the server merges consecutive slashes in URLs.
</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>MergeSlashes ON|OFF</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>MergeSlashes ON</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Added in 2.4.39</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="mergetrailers" id="mergetrailers">Directiva</a> <a name="MergeTrailers" id="MergeTrailers">MergeTrailers</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Determines whether trailers are merged into headers</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>MergeTrailers [on|off]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>MergeTrailers off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>2.4.11 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="mutex" id="mutex">Directiva</a> <a name="Mutex" id="Mutex">Mutex</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Configures mutex mechanism and lock file directory for all
or specified mutexes</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>Mutex <var>mechanism</var> [default|<var>mutex-name</var>] ... [OmitPID]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>Mutex default</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 2.3.4 and later</td></tr>
</table>
<p>The <code class="directive">Mutex</code> directive sets the mechanism,
and optionally the lock file location, that httpd and modules use
to serialize access to resources. Specify <code>default</code> as
the first argument to change the settings for all mutexes; specify
a mutex name (see table below) as the first argument to override
defaults only for that mutex.</p>
<p>The <code class="directive">Mutex</code> directive is typically used in
the following exceptional situations:</p>
<ul>
<li>change the mutex mechanism when the default mechanism selected
by <a class="glossarylink" href="../glossary.html#apr" title="ver glosario">APR</a> has a functional or performance
problem</li>
<li>change the directory used by file-based mutexes when the
default directory does not support locking</li>
</ul>
<div class="note"><h3>Supported modules</h3>
<p>This directive only configures mutexes which have been registered
with the core server using the <code>ap_mutex_register()</code> API.
All modules bundled with httpd support the <code class="directive">Mutex</code>
directive, but third-party modules may not. Consult the documentation
of the third-party module, which must indicate the mutex name(s) which
can be configured if this directive is supported.</p>
</div>
<p>The following mutex <em>mechanisms</em> are available:</p>
<ul>
<li><code>default | yes</code>
<p>This selects the default locking implementation, as determined by
<a class="glossarylink" href="../glossary.html#apr" title="ver glosario">APR</a>. The default locking implementation can
be displayed by running <code class="program"><a href="../programs/httpd.html">httpd</a></code> with the
<code>-V</code> option.</p></li>
<li><code>none | no</code>
<p>This effectively disables the mutex, and is only allowed for a
mutex if the module indicates that it is a valid choice. Consult the
module documentation for more information.</p></li>
<li><code>posixsem</code>
<p>This is a mutex variant based on a Posix semaphore.</p>
<div class="warning"><h3>Warning</h3>
<p>The semaphore ownership is not recovered if a thread in the process
holding the mutex segfaults, resulting in a hang of the web server.</p>
</div>
</li>
<li><code>sysvsem</code>
<p>This is a mutex variant based on a SystemV IPC semaphore.</p>
<div class="warning"><h3>Warning</h3>
<p>It is possible to "leak" SysV semaphores if processes crash
before the semaphore is removed.</p>
</div>
<div class="warning"><h3>Security</h3>
<p>The semaphore API allows for a denial of service attack by any
CGIs running under the same uid as the webserver (<em>i.e.</em>,
all CGIs, unless you use something like <code class="program"><a href="../programs/suexec.html">suexec</a></code>
or <code>cgiwrapper</code>).</p>
</div>
</li>
<li><code>sem</code>
<p>This selects the "best" available semaphore implementation, choosing
between Posix and SystemV IPC semaphores, in that order.</p></li>
<li><code>pthread</code>
<p>This is a mutex variant based on cross-process Posix thread
mutexes.</p>
<div class="warning"><h3>Warning</h3>
<p>On most systems, if a child process terminates abnormally while
holding a mutex that uses this implementation, the server will deadlock
and stop responding to requests. When this occurs, the server will
require a manual restart to recover.</p>
<p>Solaris is a notable exception as it provides a mechanism which
usually allows the mutex to be recovered after a child process
terminates abnormally while holding a mutex.</p>
<p>If your system implements the
<code>pthread_mutexattr_setrobust_np()</code> function, you may be able
to use the <code>pthread</code> option safely.</p>
</div>
</li>
<li><code>fcntl:/path/to/mutex</code>
<p>This is a mutex variant where a physical (lock-)file and the
<code>fcntl()</code> function are used as the mutex.</p>
<div class="warning"><h3>Warning</h3>
<p>When multiple mutexes based on this mechanism are used within
multi-threaded, multi-process environments, deadlock errors (EDEADLK)
can be reported for valid mutex operations if <code>fcntl()</code>
is not thread-aware, such as on Solaris.</p>
</div>
</li>
<li><code>flock:/path/to/mutex</code>
<p>This is similar to the <code>fcntl:/path/to/mutex</code> method
with the exception that the <code>flock()</code> function is used to
provide file locking.</p></li>
<li><code>file:/path/to/mutex</code>
<p>This selects the "best" available file locking implementation,
choosing between <code>fcntl</code> and <code>flock</code>, in that
order.</p></li>
</ul>
<p>Most mechanisms are only available on selected platforms, where the
underlying platform and <a class="glossarylink" href="../glossary.html#apr" title="ver glosario">APR</a> support it. Mechanisms
which aren't available on all platforms are <em>posixsem</em>,
<em>sysvsem</em>, <em>sem</em>, <em>pthread</em>, <em>fcntl</em>,
<em>flock</em>, and <em>file</em>.</p>
<p>With the file-based mechanisms <em>fcntl</em> and <em>flock</em>,
the path, if provided, is a directory where the lock file will be created.
The default directory is httpd's run-time file directory relative to
<code class="directive"><a href="#serverroot">ServerRoot</a></code>. Always use a local disk
filesystem for <code>/path/to/mutex</code> and never a directory residing
on a NFS- or AFS-filesystem. The basename of the file will be the mutex
type, an optional instance string provided by the module, and unless the
<code>OmitPID</code> keyword is specified, the process id of the httpd
parent process will be appended to to make the file name unique, avoiding
conflicts when multiple httpd instances share a lock file directory. For
example, if the mutex name is <code>mpm-accept</code> and the lock file
directory is <code>/var/httpd/locks</code>, the lock file name for the
httpd instance with parent process id 12345 would be
<code>/var/httpd/locks/mpm-accept.12345</code>.</p>
<div class="warning"><h3>Security</h3>
<p>It is best to <em>avoid</em> putting mutex files in a world-writable
directory such as <code>/var/tmp</code> because someone could create
a denial of service attack and prevent the server from starting by
creating a lockfile with the same name as the one the server will try
to create.</p>
</div>
<p>The following table documents the names of mutexes used by httpd
and bundled modules.</p>
<table class="bordered"><tr class="header">
<th>Mutex name</th>
<th>Module(s)</th>
<th>Protected resource</th>
</tr>
<tr>
<td><code>mpm-accept</code></td>
<td><code class="module"><a href="../mod/prefork.html">prefork</a></code> and <code class="module"><a href="../mod/worker.html">worker</a></code> MPMs</td>
<td>incoming connections, to avoid the thundering herd problem;
for more information, refer to the
<a href="../misc/perf-tuning.html">performance tuning</a>
documentation</td>
</tr>
<tr class="odd">
<td><code>authdigest-client</code></td>
<td><code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code></td>
<td>client list in shared memory</td>
</tr>
<tr>
<td><code>authdigest-opaque</code></td>
<td><code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code></td>
<td>counter in shared memory</td>
</tr>
<tr class="odd">
<td><code>ldap-cache</code></td>
<td><code class="module"><a href="../mod/mod_ldap.html">mod_ldap</a></code></td>
<td>LDAP result cache</td>
</tr>
<tr>
<td><code>rewrite-map</code></td>
<td><code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code></td>
<td>communication with external mapping programs, to avoid
intermixed I/O from multiple requests</td>
</tr>
<tr class="odd">
<td><code>ssl-cache</code></td>
<td><code class="module"><a href="../mod/mod_ssl.html">mod_ssl</a></code></td>
<td>SSL session cache</td>
</tr>
<tr>
<td><code>ssl-stapling</code></td>
<td><code class="module"><a href="../mod/mod_ssl.html">mod_ssl</a></code></td>
<td>OCSP stapling response cache</td>
</tr>
<tr class="odd">
<td><code>watchdog-callback</code></td>
<td><code class="module"><a href="../mod/mod_watchdog.html">mod_watchdog</a></code></td>
<td>callback function of a particular client module</td>
</tr>
</table>
<p>The <code>OmitPID</code> keyword suppresses the addition of the httpd
parent process id from the lock file name.</p>
<p>In the following example, the mutex mechanism for the MPM accept
mutex will be changed from the compiled-in default to <code>fcntl</code>,
with the associated lock file created in directory
<code>/var/httpd/locks</code>. The mutex mechanism for all other mutexes
will be changed from the compiled-in default to <code>sysvsem</code>.</p>
<div class="example"><p><code>
Mutex default sysvsem<br />
Mutex mpm-accept fcntl:/var/httpd/locks
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="namevirtualhost" id="namevirtualhost">Directiva</a> <a name="NameVirtualHost" id="NameVirtualHost">NameVirtualHost</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Designates an IP address for name-virtual
hosting</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>NameVirtualHost <var>addr</var>[:<var>port</var>]</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>A single <code class="directive">NameVirtualHost</code> directive
identifies a set of identical virtual hosts on which the server will
further select from on the basis of the <em>hostname</em>
requested by the client. The <code class="directive">NameVirtualHost</code>
directive is a required directive if you want to configure
<a href="../vhosts/">name-based virtual hosts</a>.</p>
<p>This directive, and the corresponding <code class="directive">VirtualHost</code>,
<em>must</em> be qualified with a port number if the server supports both HTTP
and HTTPS connections.</p>
<p>Although <var>addr</var> can be a hostname, it is recommended
that you always use an IP address or a wildcard. A wildcard
NameVirtualHost matches only virtualhosts that also have a literal wildcard
as their argument.</p>
<p>In cases where a firewall or other proxy receives the requests and
forwards them on a different IP address to the server, you must specify the
IP address of the physical interface on the machine which will be
servicing the requests. </p>
<p> In the example below, requests received on interface 192.0.2.1 and port 80
will only select among the first two virtual hosts. Requests received on
port 80 on any other interface will only select among the third and fourth
virtual hosts. In the common case where the interface isn't important
to the mapping, only the "*:80" NameVirtualHost and VirtualHost directives
are necessary.</p>
<div class="example"><p><code>
NameVirtualHost 192.0.2.1:80<br />
NameVirtualHost *:80<br /><br />
<VirtualHost 192.0.2.1:80><br />
ServerName namebased-a.example.com<br />
</VirtualHost><br />
<br />
<VirtualHost 192.0.2.1:80><br />
Servername namebased-b.example.com<br />
</VirtualHost><br />
<br />
<VirtualHost *:80><br />
ServerName namebased-c.example.com <br />
</VirtualHost><br />
<br />
<VirtualHost *:80><br />
ServerName namebased-d.example.com <br />
</VirtualHost><br />
<br />
</code></p></div>
<p>If no matching virtual host is found, then the first listed
virtual host that matches the IP address and port will be used.</p>
<p>IPv6 addresses must be enclosed in square brackets, as shown
in the following example:</p>
<div class="example"><p><code>
NameVirtualHost [2001:db8::a00:20ff:fea7:ccea]:8080
</code></p></div>
<div class="note"><h3>Argument to <code class="directive"><VirtualHost></code>
directive</h3>
<p>Note that the argument to the <code class="directive"><VirtualHost></code> directive must
exactly match the argument to the <code class="directive">NameVirtualHost</code> directive.</p>
<div class="example"><p><code>
NameVirtualHost 192.0.2.2:80<br />
<VirtualHost 192.0.2.2:80><br />
# ...<br />
</VirtualHost><br />
</code></p></div>
</div>
<h3>Consulte también</h3>
<ul>
<li><a href="../vhosts/">Virtual Hosts
documentation</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="options" id="options">Directiva</a> <a name="Options" id="Options">Options</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Configures what features are available in a particular
directory</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>Options
[+|-]<var>option</var> [[+|-]<var>option</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>Options All</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>Options</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">Options</code> directive controls which
server features are available in a particular directory.</p>
<p><var>option</var> can be set to <code>None</code>, in which
case none of the extra features are enabled, or one or more of
the following:</p>
<dl>
<dt><code>All</code></dt>
<dd>All options except for <code>MultiViews</code>. This is the default
setting.</dd>
<dt><code>ExecCGI</code></dt>
<dd>
Execution of CGI scripts using <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>
is permitted.</dd>
<dt><code>FollowSymLinks</code></dt>
<dd>
The server will follow symbolic links in this directory.
<div class="note">
<p>Even though the server follows the symlink it does <em>not</em>
change the pathname used to match against <code class="directive"><a href="#directory"><Directory></a></code> sections.</p>
<p>Note also, that this option <strong>gets ignored</strong> if set
inside a <code class="directive"><a href="#location"><Location></a></code>
section.</p>
<p>Omitting this option should not be considered a security restriction,
since symlink testing is subject to race conditions that make it
circumventable.</p>
</div></dd>
<dt><code>Includes</code></dt>
<dd>
Server-side includes provided by <code class="module"><a href="../mod/mod_include.html">mod_include</a></code>
are permitted.</dd>
<dt><code>IncludesNOEXEC</code></dt>
<dd>
Server-side includes are permitted, but the <code>#exec
cmd</code> and <code>#exec cgi</code> are disabled. It is still
possible to <code>#include virtual</code> CGI scripts from
<code class="directive"><a href="../mod/mod_alias.html#scriptalias">ScriptAlias</a></code>ed
directories.</dd>
<dt><code>Indexes</code></dt>
<dd>
If a URL which maps to a directory is requested, and there
is no <code class="directive"><a href="../mod/mod_dir.html#directoryindex">DirectoryIndex</a></code>
(<em>e.g.</em>, <code>index.html</code>) in that directory, then
<code class="module"><a href="../mod/mod_autoindex.html">mod_autoindex</a></code> will return a formatted listing
of the directory.</dd>
<dt><code>MultiViews</code></dt>
<dd>
<a href="../content-negotiation.html">Content negotiated</a>
"MultiViews" are allowed using
<code class="module"><a href="../mod/mod_negotiation.html">mod_negotiation</a></code>.
<div class="note"><h3>Note</h3> <p>This option gets ignored if set
anywhere other than <code class="directive"><a href="#directory"><Directory></a></code>, as <code class="module"><a href="../mod/mod_negotiation.html">mod_negotiation</a></code>
needs real resources to compare against and evaluate from.</p></div>
</dd>
<dt><code>SymLinksIfOwnerMatch</code></dt>
<dd>The server will only follow symbolic links for which the
target file or directory is owned by the same user id as the
link.
<div class="note"><h3>Note</h3> <p>This option gets ignored if
set inside a <code class="directive"><a href="#location"><Location></a></code> section.</p>
<p>This option should not be considered a security restriction,
since symlink testing is subject to race conditions that make it
circumventable.</p></div>
</dd>
</dl>
<p>Normally, if multiple <code class="directive">Options</code> could
apply to a directory, then the most specific one is used and
others are ignored; the options are not merged. (See <a href="../sections.html#mergin">how sections are merged</a>.)
However if <em>all</em> the options on the
<code class="directive">Options</code> directive are preceded by a
<code>+</code> or <code>-</code> symbol, the options are
merged. Any options preceded by a <code>+</code> are added to the
options currently in force, and any options preceded by a
<code>-</code> are removed from the options currently in
force. </p>
<div class="warning"><h3>Warning</h3>
<p>Mixing <code class="directive">Options</code> with a <code>+</code> or
<code>-</code> with those without is not valid syntax, and is likely
to cause unexpected results.</p>
</div>
<p>For example, without any <code>+</code> and <code>-</code> symbols:</p>
<div class="example"><p><code>
<Directory /web/docs><br />
<span class="indent">
Options Indexes FollowSymLinks<br />
</span>
</Directory><br />
<br />
<Directory /web/docs/spec><br />
<span class="indent">
Options Includes<br />
</span>
</Directory>
</code></p></div>
<p>then only <code>Includes</code> will be set for the
<code>/web/docs/spec</code> directory. However if the second
<code class="directive">Options</code> directive uses the <code>+</code> and
<code>-</code> symbols:</p>
<div class="example"><p><code>
<Directory /web/docs><br />
<span class="indent">
Options Indexes FollowSymLinks<br />
</span>
</Directory><br />
<br />
<Directory /web/docs/spec><br />
<span class="indent">
Options +Includes -Indexes<br />
</span>
</Directory>
</code></p></div>
<p>then the options <code>FollowSymLinks</code> and
<code>Includes</code> are set for the <code>/web/docs/spec</code>
directory.</p>
<div class="note"><h3>Note</h3>
<p>Using <code>-IncludesNOEXEC</code> or
<code>-Includes</code> disables server-side includes completely
regardless of the previous setting.</p>
</div>
<p>The default in the absence of any other settings is
<code>All</code>.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="protocol" id="protocol">Directiva</a> <a name="Protocol" id="Protocol">Protocol</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Protocol for a listening socket</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>Protocol <var>protocol</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache 2.1.5 and later.
On Windows from Apache 2.3.3 and later.</td></tr>
</table>
<p>This directive specifies the protocol used for a specific listening socket.
The protocol is used to determine which module should handle a request, and
to apply protocol specific optimizations with the <code class="directive">AcceptFilter</code>
directive.</p>
<p>You only need to set the protocol if you are running on non-standard ports, otherwise <code>http</code> is assumed for port 80 and <code>https</code> for port 443.</p>
<p>For example, if you are running <code>https</code> on a non-standard port, specify the protocol explicitly:</p>
<div class="example"><p><code>
Protocol https
</code></p></div>
<p>You can also specify the protocol using the <code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code> directive.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive">AcceptFilter</code></li>
<li><code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="protocols" id="protocols">Directiva</a> <a name="Protocols" id="Protocols">Protocols</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Protocols available for a server/virtual host</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>Protocols <var>protocol</var> ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>Protocols http/1.1</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Only available from Apache 2.4.17 and later.</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#protocolshonororder">ProtocolsHonorOrder</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="protocolshonororder" id="protocolshonororder">Directiva</a> <a name="ProtocolsHonorOrder" id="ProtocolsHonorOrder">ProtocolsHonorOrder</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Determines if order of Protocols determines precedence during negotiation</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ProtocolsHonorOrder On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ProtocolsHonorOrder On</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Only available from Apache 2.4.17 and later.</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#protocols">Protocols</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="qualifyredirecturl" id="qualifyredirecturl">Directiva</a> <a name="QualifyRedirectURL" id="QualifyRedirectURL">QualifyRedirectURL</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Controls whether the REDIRECT_URL environment variable is
fully qualified</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>QualifyRedirectURL On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>QualifyRedirectURL Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Directive supported in 2.4.18 and later. 2.4.17 acted
as if 'QualifyRedirectURL On' was configured.</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="readbuffersize" id="readbuffersize">Directiva</a> <a name="ReadBufferSize" id="ReadBufferSize">ReadBufferSize</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Size of the buffers used to read data</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ReadBufferSize <var>bytes</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ReadBufferSize 8192</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>2.4.27 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="regexdefaultoptions" id="regexdefaultoptions">Directiva</a> <a name="RegexDefaultOptions" id="RegexDefaultOptions">RegexDefaultOptions</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Allow to configure global/default options for regexes</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>RegexDefaultOptions [none] [+|-]<var>option</var> [[+|-]<var>option</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>RegexDefaultOptions DOTALL DOLLAR_ENDONLY</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Only available from Apache 2.4.30 and later.</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="registerhttpmethod" id="registerhttpmethod">Directiva</a> <a name="RegisterHttpMethod" id="RegisterHttpMethod">RegisterHttpMethod</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Register non-standard HTTP methods</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>RegisterHttpMethod <var>method</var> [<var>method</var> [...]]</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 2.4.24 and later</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p><h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#httpprotocoloptions">HTTPProtocolOptions</a></code></li>
<li><code class="directive"><a href="../mod/mod_allowmethods.html#allowmethods">AllowMethods</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="rlimitcpu" id="rlimitcpu">Directiva</a> <a name="RLimitCPU" id="RLimitCPU">RLimitCPU</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Limits the CPU consumption of processes launched
by Apache httpd children</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>RLimitCPU <var>seconds</var>|max [<var>seconds</var>|max]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>Unset; uses operating system defaults</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Takes 1 or 2 parameters. The first parameter sets the soft
resource limit for all processes and the second parameter sets
the maximum resource limit. Either parameter can be a number,
or <code>max</code> to indicate to the server that the limit should
be set to the maximum allowed by the operating system
configuration. Raising the maximum resource limit requires that
the server is running as <code>root</code>, or in the initial startup
phase.</p>
<p>This applies to processes forked off from Apache httpd children
servicing requests, not the Apache httpd children themselves. This
includes CGI scripts and SSI exec commands, but not any
processes forked off from the Apache httpd parent such as piped
logs.</p>
<p>CPU resource limits are expressed in seconds per
process.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#rlimitmem">RLimitMEM</a></code></li>
<li><code class="directive"><a href="#rlimitnproc">RLimitNPROC</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="rlimitmem" id="rlimitmem">Directiva</a> <a name="RLimitMEM" id="RLimitMEM">RLimitMEM</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Limits the memory consumption of processes launched
by Apache httpd children</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>RLimitMEM <var>bytes</var>|max [<var>bytes</var>|max]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>Unset; uses operating system defaults</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Takes 1 or 2 parameters. The first parameter sets the soft
resource limit for all processes and the second parameter sets
the maximum resource limit. Either parameter can be a number,
or <code>max</code> to indicate to the server that the limit should
be set to the maximum allowed by the operating system
configuration. Raising the maximum resource limit requires that
the server is running as <code>root</code>, or in the initial startup
phase.</p>
<p>This applies to processes forked off from Apache httpd children
servicing requests, not the Apache httpd children themselves. This
includes CGI scripts and SSI exec commands, but not any
processes forked off from the Apache httpd parent such as piped
logs.</p>
<p>Memory resource limits are expressed in bytes per
process.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#rlimitcpu">RLimitCPU</a></code></li>
<li><code class="directive"><a href="#rlimitnproc">RLimitNPROC</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="rlimitnproc" id="rlimitnproc">Directiva</a> <a name="RLimitNPROC" id="RLimitNPROC">RLimitNPROC</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Limits the number of processes that can be launched by
processes launched by Apache httpd children</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>RLimitNPROC <var>number</var>|max [<var>number</var>|max]</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>Unset; uses operating system defaults</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Takes 1 or 2 parameters. The first parameter sets the soft
resource limit for all processes and the second parameter sets
the maximum resource limit. Either parameter can be a number,
or <code>max</code> to indicate to the server that the limit
should be set to the maximum allowed by the operating system
configuration. Raising the maximum resource limit requires that
the server is running as <code>root</code>, or in the initial startup
phase.</p>
<p>This applies to processes forked off from Apache httpd children
servicing requests, not the Apache httpd children themselves. This
includes CGI scripts and SSI exec commands, but not any
processes forked off from the Apache httpd parent such as piped
logs.</p>
<p>Process limits control the number of processes per user.</p>
<div class="note"><h3>Note</h3>
<p>If CGI processes are <strong>not</strong> running
under user ids other than the web server user id, this directive
will limit the number of processes that the server itself can
create. Evidence of this situation will be indicated by
<strong><code>cannot fork</code></strong> messages in the
<code>error_log</code>.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#rlimitmem">RLimitMEM</a></code></li>
<li><code class="directive"><a href="#rlimitcpu">RLimitCPU</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="scriptinterpretersource" id="scriptinterpretersource">Directiva</a> <a name="ScriptInterpreterSource" id="ScriptInterpreterSource">ScriptInterpreterSource</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Technique for locating the interpreter for CGI
scripts</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ScriptInterpreterSource Registry|Registry-Strict|Script</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ScriptInterpreterSource Script</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Win32 only;
option <code>Registry-Strict</code> is available in Apache HTTP Server 2.0 and
later</td></tr>
</table>
<p>This directive is used to control how Apache httpd finds the
interpreter used to run CGI scripts. The default setting is
<code>Script</code>. This causes Apache httpd to use the interpreter pointed to
by the shebang line (first line, starting with <code>#!</code>) in the
script. On Win32 systems this line usually looks like:</p>
<div class="example"><p><code>
#!C:/Perl/bin/perl.exe
</code></p></div>
<p>or, if <code>perl</code> is in the <code>PATH</code>, simply:</p>
<div class="example"><p><code>
#!perl
</code></p></div>
<p>Setting <code>ScriptInterpreterSource Registry</code> will
cause the Windows Registry tree <code>HKEY_CLASSES_ROOT</code> to be
searched using the script file extension (e.g., <code>.pl</code>) as a
search key. The command defined by the registry subkey
<code>Shell\ExecCGI\Command</code> or, if it does not exist, by the subkey
<code>Shell\Open\Command</code> is used to open the script file. If the
registry keys cannot be found, Apache httpd falls back to the behavior of the
<code>Script</code> option.</p>
<div class="warning"><h3>Security</h3>
<p>Be careful when using <code>ScriptInterpreterSource
Registry</code> with <code class="directive"><a href="../mod/mod_alias.html#scriptalias">ScriptAlias</a></code>'ed directories, because
Apache httpd will try to execute <strong>every</strong> file within this
directory. The <code>Registry</code> setting may cause undesired
program calls on files which are typically not executed. For
example, the default open command on <code>.htm</code> files on
most Windows systems will execute Microsoft Internet Explorer, so
any HTTP request for an <code>.htm</code> file existing within the
script directory would start the browser in the background on the
server. This is a good way to crash your system within a minute or
so.</p>
</div>
<p>The option <code>Registry-Strict</code> which is new in Apache HTTP Server
2.0 does the same thing as <code>Registry</code> but uses only the
subkey <code>Shell\ExecCGI\Command</code>. The
<code>ExecCGI</code> key is not a common one. It must be
configured manually in the windows registry and hence prevents
accidental program calls on your system.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="seerequesttail" id="seerequesttail">Directiva</a> <a name="SeeRequestTail" id="SeeRequestTail">SeeRequestTail</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Determine if mod_status displays the first 63 characters
of a request or the last 63, assuming the request itself is greater than
63 chars.</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>SeeRequestTail On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>SeeRequestTail Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache httpd 2.2.7 and later.</td></tr>
</table>
<p>mod_status with <code>ExtendedStatus On</code>
displays the actual request being handled.
For historical purposes, only 63 characters of the request
are actually stored for display purposes. This directive
controls whether the 1st 63 characters are stored (the previous
behavior and the default) or if the last 63 characters are. This
is only applicable, of course, if the length of the request is
64 characters or greater.</p>
<p>If Apache httpd is handling <code>GET /disk1/storage/apache/htdocs/images/imagestore1/food/apples.jpg HTTP/1.1</code> mod_status displays as follows:
</p>
<table class="bordered">
<tr>
<th>Off (default)</th>
<td>GET /disk1/storage/apache/htdocs/images/imagestore1/food/apples</td>
</tr>
<tr>
<th>On</th>
<td>orage/apache/htdocs/images/imagestore1/food/apples.jpg HTTP/1.1</td>
</tr>
</table>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="serveradmin" id="serveradmin">Directiva</a> <a name="ServerAdmin" id="ServerAdmin">ServerAdmin</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Email address that the server includes in error
messages sent to the client</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ServerAdmin <var>email-address</var>|<var>URL</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">ServerAdmin</code> sets the contact address
that the server includes in any error messages it returns to the
client. If the <code>httpd</code> doesn't recognize the supplied argument
as an URL, it
assumes, that it's an <var>email-address</var> and prepends it with
<code>mailto:</code> in hyperlink targets. However, it's recommended to
actually use an email address, since there are a lot of CGI scripts that
make that assumption. If you want to use an URL, it should point to another
server under your control. Otherwise users may not be able to contact you in
case of errors.</p>
<p>It may be worth setting up a dedicated address for this, e.g.</p>
<div class="example"><p><code>
ServerAdmin www-admin@foo.example.com
</code></p></div>
<p>as users do not always mention that they are talking about the
server!</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="serveralias" id="serveralias">Directiva</a> <a name="ServerAlias" id="ServerAlias">ServerAlias</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Alternate names for a host used when matching requests
to name-virtual hosts</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ServerAlias <var>hostname</var> [<var>hostname</var>] ...</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">ServerAlias</code> directive sets the
alternate names for a host, for use with <a href="../vhosts/name-based.html">name-based virtual hosts</a>. The
<code class="directive">ServerAlias</code> may include wildcards, if appropriate.</p>
<div class="example"><p><code>
<VirtualHost *:80><br />
ServerName server.domain.com<br />
ServerAlias server server2.domain.com server2<br />
ServerAlias *.example.com<br />
UseCanonicalName Off<br />
# ...<br />
</VirtualHost>
</code></p></div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#usecanonicalname">UseCanonicalName</a></code></li>
<li><a href="../vhosts/">Apache HTTP Server Virtual Host documentation</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="servername" id="servername">Directiva</a> <a name="ServerName" id="ServerName">ServerName</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Hostname and port that the server uses to identify
itself</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ServerName [<var>scheme</var>://]<var>fully-qualified-domain-name</var>[:<var>port</var>]</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">ServerName</code> directive sets the
request scheme, hostname and
port that the server uses to identify itself. This is used when
creating redirection URLs.</p>
<p>Additionally, <code class="directive">ServerName</code> is used (possibly
in conjunction with <code class="directive">ServerAlias</code>) to uniquely
identify a virtual host, when using <a href="../vhosts/name-based.html">name-based virtual hosts</a>.</p>
<p>For example, if the name of the
machine hosting the web server is <code>simple.example.com</code>,
but the machine also has the DNS alias <code>www.example.com</code>
and you wish the web server to be so identified, the following
directive should be used:</p>
<div class="example"><p><code>
ServerName www.example.com:80
</code></p></div>
<p>The <code class="directive">ServerName</code> directive
may appear anywhere within the definition of a server. However,
each appearance overrides the previous appearance (within that
server).</p>
<p>If no <code class="directive">ServerName</code> is specified, then the
server attempts to deduce the hostname by performing a reverse
lookup on the IP address. If no port is specified in the
<code class="directive">ServerName</code>, then the server will use the
port from the incoming request. For optimal reliability and
predictability, you should specify an explicit hostname and port
using the <code class="directive">ServerName</code> directive.</p>
<p>If you are using <a href="../vhosts/name-based.html">name-based virtual hosts</a>,
the <code class="directive">ServerName</code> inside a
<code class="directive"><a href="#virtualhost"><VirtualHost></a></code>
section specifies what hostname must appear in the request's
<code>Host:</code> header to match this virtual host.</p>
<p>Sometimes, the server runs behind a device that processes SSL,
such as a reverse proxy, load balancer or SSL offload
appliance. When this is the case, specify the
<code>https://</code> scheme and the port number to which the
clients connect in the <code class="directive">ServerName</code> directive
to make sure that the server generates the correct
self-referential URLs.
</p>
<p>See the description of the
<code class="directive"><a href="#usecanonicalname">UseCanonicalName</a></code> and
<code class="directive"><a href="#usecanonicalphysicalport">UseCanonicalPhysicalPort</a></code> directives for
settings which determine whether self-referential URLs (e.g., by the
<code class="module"><a href="../mod/mod_dir.html">mod_dir</a></code> module) will refer to the
specified port, or to the port number given in the client's request.
</p>
<div class="warning">
<p>Failure to set <code class="directive">ServerName</code> to a name that
your server can resolve to an IP address will result in a startup
warning. <code>httpd</code> will then use whatever hostname it can
determine, using the system's <code>hostname</code> command. This
will almost never be the hostname you actually want.</p>
<div class="example"><p><code>
httpd: Could not reliably determine the server's fully qualified domain name, using rocinante.local for ServerName
</code></p></div>
</div>
<h3>Consulte también</h3>
<ul>
<li><a href="../dns-caveats.html">Issues Regarding DNS and
Apache HTTP Server</a></li>
<li><a href="../vhosts/">Apache HTTP Server virtual host
documentation</a></li>
<li><code class="directive"><a href="#usecanonicalname">UseCanonicalName</a></code></li>
<li><code class="directive"><a href="#usecanonicalphysicalport">UseCanonicalPhysicalPort</a></code></li>
<li><code class="directive"><a href="#namevirtualhost">NameVirtualHost</a></code></li>
<li><code class="directive"><a href="#serveralias">ServerAlias</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="serverpath" id="serverpath">Directiva</a> <a name="ServerPath" id="ServerPath">ServerPath</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Legacy URL pathname for a name-based virtual host that
is accessed by an incompatible browser</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ServerPath <var>URL-path</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">ServerPath</code> directive sets the legacy
URL pathname for a host, for use with <a href="../vhosts/">name-based virtual hosts</a>.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../vhosts/">Apache HTTP Server Virtual Host documentation</a></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="serverroot" id="serverroot">Directiva</a> <a name="ServerRoot" id="ServerRoot">ServerRoot</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Base directory for the server installation</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ServerRoot <var>directory-path</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ServerRoot /usr/local/apache</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">ServerRoot</code> directive sets the
directory in which the server lives. Typically it will contain the
subdirectories <code>conf/</code> and <code>logs/</code>. Relative
paths in other configuration directives (such as <code class="directive"><a href="#include">Include</a></code> or <code class="directive"><a href="../mod/mod_so.html#loadmodule">LoadModule</a></code>, for example) are taken as
relative to this directory.</p>
<div class="example"><h3>Example</h3><p><code>
ServerRoot /home/httpd
</code></p></div>
<h3>Consulte también</h3>
<ul>
<li><a href="../invoking.html">the <code>-d</code>
option to <code>httpd</code></a></li>
<li><a href="../misc/security_tips.html#serverroot">the
security tips</a> for information on how to properly set
permissions on the <code class="directive">ServerRoot</code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="serversignature" id="serversignature">Directiva</a> <a name="ServerSignature" id="ServerSignature">ServerSignature</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Configures the footer on server-generated documents</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ServerSignature On|Off|EMail</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ServerSignature Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>All</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">ServerSignature</code> directive allows the
configuration of a trailing footer line under server-generated
documents (error messages, <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> ftp directory
listings, <code class="module"><a href="../mod/mod_info.html">mod_info</a></code> output, ...). The reason why you
would want to enable such a footer line is that in a chain of proxies,
the user often has no possibility to tell which of the chained servers
actually produced a returned error message.</p>
<p>The <code>Off</code>
setting, which is the default, suppresses the footer line (and is
therefore compatible with the behavior of Apache-1.2 and
below). The <code>On</code> setting simply adds a line with the
server version number and <code class="directive"><a href="#servername">ServerName</a></code> of the serving virtual host,
and the <code>EMail</code> setting additionally creates a
"mailto:" reference to the <code class="directive"><a href="#serveradmin">ServerAdmin</a></code> of the referenced
document.</p>
<p>After version 2.0.44, the details of the server version number
presented are controlled by the <code class="directive"><a href="#servertokens">ServerTokens</a></code> directive.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#servertokens">ServerTokens</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="servertokens" id="servertokens">Directiva</a> <a name="ServerTokens" id="ServerTokens">ServerTokens</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Configures the <code>Server</code> HTTP response
header</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>ServerTokens Major|Minor|Min[imal]|Prod[uctOnly]|OS|Full</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>ServerTokens Full</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>This directive controls whether <code>Server</code> response
header field which is sent back to clients includes a
description of the generic OS-type of the server as well as
information about compiled-in modules.</p>
<dl>
<dt><code>ServerTokens Full</code> (or not specified)</dt>
<dd>Server sends (<em>e.g.</em>): <code>Server: Apache/2.4.1
(Unix) PHP/4.2.2 MyMod/1.2</code></dd>
<dt><code>ServerTokens Prod[uctOnly]</code></dt>
<dd>Server sends (<em>e.g.</em>): <code>Server:
Apache</code></dd>
<dt><code>ServerTokens Major</code></dt>
<dd>Server sends (<em>e.g.</em>): <code>Server:
Apache/2</code></dd>
<dt><code>ServerTokens Minor</code></dt>
<dd>Server sends (<em>e.g.</em>): <code>Server:
Apache/2.4</code></dd>
<dt><code>ServerTokens Min[imal]</code></dt>
<dd>Server sends (<em>e.g.</em>): <code>Server:
Apache/2.4.1</code></dd>
<dt><code>ServerTokens OS</code></dt>
<dd>Server sends (<em>e.g.</em>): <code>Server: Apache/2.4.1
(Unix)</code></dd>
</dl>
<p>This setting applies to the entire server, and cannot be
enabled or disabled on a virtualhost-by-virtualhost basis.</p>
<p>After version 2.0.44, this directive also controls the
information presented by the <code class="directive"><a href="#serversignature">ServerSignature</a></code> directive.</p>
<div class="note">Setting <code class="directive">ServerTokens</code> to less than
<code>minimal</code> is not recommended because it makes it more
difficult to debug interoperational problems. Also note that
disabling the Server: header does nothing at all to make your
server more secure; the idea of "security through obscurity"
is a myth and leads to a false sense of safety.</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#serversignature">ServerSignature</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="sethandler" id="sethandler">Directiva</a> <a name="SetHandler" id="SetHandler">SetHandler</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Forces all matching files to be processed by a
handler</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>SetHandler <var>handler-name</var>|None</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Moved into the core in Apache httpd 2.0</td></tr>
</table>
<p>When placed into an <code>.htaccess</code> file or a
<code class="directive"><a href="#directory"><Directory></a></code> or
<code class="directive"><a href="#location"><Location></a></code>
section, this directive forces all matching files to be parsed
through the <a href="../handler.html">handler</a> given by
<var>handler-name</var>. For example, if you had a directory you
wanted to be parsed entirely as imagemap rule files, regardless
of extension, you might put the following into an
<code>.htaccess</code> file in that directory:</p>
<div class="example"><p><code>
SetHandler imap-file
</code></p></div>
<p>Another example: if you wanted to have the server display a
status report whenever a URL of
<code>http://servername/status</code> was called, you might put
the following into <code>httpd.conf</code>:</p>
<div class="example"><p><code>
<Location /status><br />
<span class="indent">
SetHandler server-status<br />
</span>
</Location>
</code></p></div>
<p>You can override an earlier defined <code class="directive">SetHandler</code>
directive by using the value <code>None</code>.</p>
<p><strong>Note:</strong> because SetHandler overrides default handlers,
normal behaviour such as handling of URLs ending in a slash (/) as
directories or index files is suppressed.</p>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="setinputfilter" id="setinputfilter">Directiva</a> <a name="SetInputFilter" id="SetInputFilter">SetInputFilter</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Sets the filters that will process client requests and POST
input</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>SetInputFilter <var>filter</var>[;<var>filter</var>...]</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">SetInputFilter</code> directive sets the
filter or filters which will process client requests and POST
input when they are received by the server. This is in addition to
any filters defined elsewhere, including the
<code class="directive"><a href="../mod/mod_mime.html#addinputfilter">AddInputFilter</a></code>
directive.</p>
<p>If more than one filter is specified, they must be separated
by semicolons in the order in which they should process the
content.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../filter.html">Filters</a> documentation</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="setoutputfilter" id="setoutputfilter">Directiva</a> <a name="SetOutputFilter" id="SetOutputFilter">SetOutputFilter</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Sets the filters that will process responses from the
server</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>SetOutputFilter <var>filter</var>[;<var>filter</var>...]</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Anula:</a></th><td>FileInfo</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">SetOutputFilter</code> directive sets the filters
which will process responses from the server before they are
sent to the client. This is in addition to any filters defined
elsewhere, including the
<code class="directive"><a href="../mod/mod_mime.html#addoutputfilter">AddOutputFilter</a></code>
directive.</p>
<p>For example, the following configuration will process all files
in the <code>/www/data/</code> directory for server-side
includes.</p>
<div class="example"><p><code>
<Directory /www/data/><br />
<span class="indent">
SetOutputFilter INCLUDES<br />
</span>
</Directory>
</code></p></div>
<p>If more than one filter is specified, they must be separated
by semicolons in the order in which they should process the
content.</p>
<h3>Consulte también</h3>
<ul>
<li><a href="../filter.html">Filters</a> documentation</li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="stricthostcheck" id="stricthostcheck">Directiva</a> <a name="StrictHostCheck" id="StrictHostCheck">StrictHostCheck</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Controls whether the server requires the requested hostname be
listed enumerated in the virtual host handling the request
</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>StrictHostCheck ON|OFF</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>StrictHostCheck OFF</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Added in 2.4.49</td></tr>
</table><p>The documentation for this directive has
not been translated yet. Please have a look at the English
version.</p></div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="timeout" id="timeout">Directiva</a> <a name="TimeOut" id="TimeOut">TimeOut</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Amount of time the server will wait for
certain events before failing a request</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>TimeOut <var>seconds</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>TimeOut 60</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>The <code class="directive">TimeOut</code> directive defines the length
of time Apache httpd will wait for I/O in various circumstances:</p>
<ol>
<li>When reading data from the client, the length of time to
wait for a TCP packet to arrive if the read buffer is
empty.</li>
<li>When writing data to the client, the length of time to wait
for an acknowledgement of a packet if the send buffer is
full.</li>
<li>In <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, the length of time to wait for
output from a CGI script.</li>
<li>In <code class="module"><a href="../mod/mod_ext_filter.html">mod_ext_filter</a></code>, the length of time to
wait for output from a filtering process.</li>
<li>In <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>, the default timeout value if
<code class="directive"><a href="../mod/mod_proxy.html#proxytimeout">ProxyTimeout</a></code> is not
configured.</li>
</ol>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="traceenable" id="traceenable">Directiva</a> <a name="TraceEnable" id="TraceEnable">TraceEnable</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Determines the behaviour on <code>TRACE</code> requests</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>TraceEnable <var>[on|off|extended]</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>TraceEnable on</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibilidad:</a></th><td>Available in Apache HTTP Server 1.3.34, 2.0.55 and later</td></tr>
</table>
<p>This directive overrides the behavior of <code>TRACE</code> for both
the core server and <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>. The default
<code>TraceEnable on</code> permits <code>TRACE</code> requests per
RFC 2616, which disallows any request body to accompany the request.
<code>TraceEnable off</code> causes the core server and
<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> to return a <code>405</code> (Method not
allowed) error to the client.</p>
<p>Finally, for testing and diagnostic purposes only, request
bodies may be allowed using the non-compliant <code>TraceEnable
extended</code> directive. The core (as an origin server) will
restrict the request body to 64k (plus 8k for chunk headers if
<code>Transfer-Encoding: chunked</code> is used). The core will
reflect the full headers and all chunk headers with the response
body. As a proxy server, the request body is not restricted to 64k.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="undefine" id="undefine">Directiva</a> <a name="UnDefine" id="UnDefine">UnDefine</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Undefine the existence of a variable</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>UnDefine <var>parameter-name</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>Undoes the effect of a <code class="directive"><a href="#define">Define</a></code> or
of passing a <code>-D</code> argument to <code class="program"><a href="../programs/httpd.html">httpd</a></code>.</p>
<p>This directive can be used to toggle the use of <code class="directive"><a href="#ifdefine"><IfDefine></a></code> sections without needing to alter
<code>-D</code> arguments in any startup scripts.</p>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="usecanonicalname" id="usecanonicalname">Directiva</a> <a name="UseCanonicalName" id="UseCanonicalName">UseCanonicalName</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Configures how the server determines its own name and
port</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>UseCanonicalName On|Off|DNS</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>UseCanonicalName Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>In many situations Apache httpd must construct a <em>self-referential</em>
URL -- that is, a URL that refers back to the same server. With
<code>UseCanonicalName On</code> Apache httpd will use the hostname and port
specified in the <code class="directive"><a href="#servername">ServerName</a></code>
directive to construct the canonical name for the server. This name
is used in all self-referential URLs, and for the values of
<code>SERVER_NAME</code> and <code>SERVER_PORT</code> in CGIs.</p>
<p>With <code>UseCanonicalName Off</code> Apache httpd will form
self-referential URLs using the hostname and port supplied by
the client if any are supplied (otherwise it will use the
canonical name, as defined above). These values are the same
that are used to implement <a href="../vhosts/name-based.html">name-based virtual hosts</a>,
and are available with the same clients. The CGI variables
<code>SERVER_NAME</code> and <code>SERVER_PORT</code> will be
constructed from the client supplied values as well.</p>
<p>An example where this may be useful is on an intranet server
where you have users connecting to the machine using short
names such as <code>www</code>. You'll notice that if the users
type a shortname, and a URL which is a directory, such as
<code>http://www/splat</code>, <em>without the trailing
slash</em> then Apache httpd will redirect them to
<code>http://www.domain.com/splat/</code>. If you have
authentication enabled, this will cause the user to have to
authenticate twice (once for <code>www</code> and once again
for <code>www.domain.com</code> -- see <a href="http://httpd.apache.org/docs/misc/FAQ.html#prompted-twice">the
FAQ on this subject for more information</a>). But if
<code class="directive">UseCanonicalName</code> is set <code>Off</code>, then
Apache httpd will redirect to <code>http://www/splat/</code>.</p>
<p>There is a third option, <code>UseCanonicalName DNS</code>,
which is intended for use with mass IP-based virtual hosting to
support ancient clients that do not provide a
<code>Host:</code> header. With this option Apache httpd does a
reverse DNS lookup on the server IP address that the client
connected to in order to work out self-referential URLs.</p>
<div class="warning"><h3>Warning</h3>
<p>If CGIs make assumptions about the values of <code>SERVER_NAME</code>
they may be broken by this option. The client is essentially free
to give whatever value they want as a hostname. But if the CGI is
only using <code>SERVER_NAME</code> to construct self-referential URLs
then it should be just fine.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#usecanonicalphysicalport">UseCanonicalPhysicalPort</a></code></li>
<li><code class="directive"><a href="#servername">ServerName</a></code></li>
<li><code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="usecanonicalphysicalport" id="usecanonicalphysicalport">Directiva</a> <a name="UseCanonicalPhysicalPort" id="UseCanonicalPhysicalPort">UseCanonicalPhysicalPort</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Configures how the server determines its own name and
port</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code>UseCanonicalPhysicalPort On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Valor por defecto:</a></th><td><code>UseCanonicalPhysicalPort Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p>In many situations Apache httpd must construct a <em>self-referential</em>
URL -- that is, a URL that refers back to the same server. With
<code>UseCanonicalPhysicalPort On</code> Apache httpd will, when
constructing the canonical port for the server to honor
the <code class="directive"><a href="#usecanonicalname">UseCanonicalName</a></code> directive,
provide the actual physical port number being used by this request
as a potential port. With <code>UseCanonicalPhysicalPort Off</code>
Apache httpd will not ever use the actual physical port number, instead
relying on all configured information to construct a valid port number.</p>
<div class="note"><h3>Note</h3>
<p>The ordering of when the physical port is used is as follows:<br /><br />
<code>UseCanonicalName On</code></p>
<ul>
<li>Port provided in <code>Servername</code></li>
<li>Physical port</li>
<li>Default port</li>
</ul>
<code>UseCanonicalName Off | DNS</code>
<ul>
<li>Parsed port from <code>Host:</code> header</li>
<li>Physical port</li>
<li>Port provided in <code>Servername</code></li>
<li>Default port</li>
</ul>
<p>With <code>UseCanonicalPhysicalPort Off</code>, the
physical ports are removed from the ordering.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><code class="directive"><a href="#usecanonicalname">UseCanonicalName</a></code></li>
<li><code class="directive"><a href="#servername">ServerName</a></code></li>
<li><code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code></li>
</ul>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="virtualhost" id="virtualhost">Directiva</a> <a name="VirtualHost" id="VirtualHost"><VirtualHost></a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Descripción:</a></th><td>Contains directives that apply only to a specific
hostname or IP address</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Sintaxis:</a></th><td><code><VirtualHost
<var>addr</var>[:<var>port</var>] [<var>addr</var>[:<var>port</var>]]
...> ... </VirtualHost></code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexto:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Estado:</a></th><td>Core</td></tr>
<tr><th><a href="directive-dict.html#Module">Módulo:</a></th><td>core</td></tr>
</table>
<p><code class="directive"><VirtualHost></code> and
<code></VirtualHost></code> are used to enclose a group of
directives that will apply only to a particular virtual host. Any
directive that is allowed in a virtual host context may be
used. When the server receives a request for a document on a
particular virtual host, it uses the configuration directives
enclosed in the <code class="directive"><VirtualHost></code>
section. <var>Addr</var> can be:</p>
<ul>
<li>The IP address of the virtual host;</li>
<li>A fully qualified domain name for the IP address of the
virtual host (not recommended);</li>
<li>The character <code>*</code>, which is used only in combination with
<code>NameVirtualHost *</code> to match all IP addresses; or</li>
<li>The string <code>_default_</code>, which is used only
with IP virtual hosting to catch unmatched IP addresses.</li>
</ul>
<div class="example"><h3>Example</h3><p><code>
<VirtualHost 10.1.2.3><br />
<span class="indent">
ServerAdmin webmaster@host.example.com<br />
DocumentRoot /www/docs/host.example.com<br />
ServerName host.example.com<br />
ErrorLog logs/host.example.com-error_log<br />
TransferLog logs/host.example.com-access_log<br />
</span>
</VirtualHost>
</code></p></div>
<p>IPv6 addresses must be specified in square brackets because
the optional port number could not be determined otherwise. An
IPv6 example is shown below:</p>
<div class="example"><p><code>
<VirtualHost [2001:db8::a00:20ff:fea7:ccea]><br />
<span class="indent">
ServerAdmin webmaster@host.example.com<br />
DocumentRoot /www/docs/host.example.com<br />
ServerName host.example.com<br />
ErrorLog logs/host.example.com-error_log<br />
TransferLog logs/host.example.com-access_log<br />
</span>
</VirtualHost>
</code></p></div>
<p>Each Virtual Host must correspond to a different IP address,
different port number or a different host name for the server,
in the former case the server machine must be configured to
accept IP packets for multiple addresses. (If the machine does
not have multiple network interfaces, then this can be
accomplished with the <code>ifconfig alias</code> command -- if
your OS supports it).</p>
<div class="note"><h3>Note</h3>
<p>The use of <code class="directive"><VirtualHost></code> does
<strong>not</strong> affect what addresses Apache httpd listens on. You
may need to ensure that Apache httpd is listening on the correct addresses
using <code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code>.</p>
</div>
<p>When using IP-based virtual hosting, the special name
<code>_default_</code> can be specified in
which case this virtual host will match any IP address that is
not explicitly listed in another virtual host. In the absence
of any <code>_default_</code> virtual host the "main" server config,
consisting of all those definitions outside any VirtualHost
section, is used when no IP-match occurs.</p>
<p>You can specify a <code>:port</code> to change the port that is
matched. If unspecified then it defaults to the same port as the
most recent <code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code>
statement of the main server. You may also specify <code>:*</code>
to match all ports on that address. (This is recommended when used
with <code>_default_</code>.)</p>
<p>A <code class="directive"><a href="#servername">ServerName</a></code> should be
specified inside each <code class="directive"><VirtualHost></code> block. If it is absent, the
<code class="directive"><a href="#servername">ServerName</a></code> from the "main"
server configuration will be inherited.</p>
<p>If no matching virtual host is found, then the first listed
virtual host that matches the IP address will be used. As a
consequence, the first listed virtual host is the default virtual
host.</p>
<div class="warning"><h3>Security</h3>
<p>See the <a href="../misc/security_tips.html">security tips</a>
document for details on why your security could be compromised if the
directory where log files are stored is writable by anyone other
than the user that starts the server.</p>
</div>
<h3>Consulte también</h3>
<ul>
<li><a href="../vhosts/">Apache HTTP Server Virtual Host documentation</a></li>
<li><a href="../dns-caveats.html">Issues Regarding DNS and
Apache HTTP Server</a></li>
<li><a href="../bind.html">Setting
which addresses and ports Apache HTTP Server uses</a></li>
<li><a href="../sections.html">How <Directory>, <Location>
and <Files> sections work</a> for an explanation of how these
different sections are combined when a request is received</li>
</ul>
</div>
</div>
<div class="bottomlang">
<p><span>Idiomas disponibles: </span><a href="../de/mod/core.html" hreflang="de" rel="alternate" title="Deutsch"> de </a> |
<a href="../en/mod/core.html" hreflang="en" rel="alternate" title="English"> en </a> |
<a href="../es/mod/core.html" title="Español"> es </a> |
<a href="../fr/mod/core.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
<a href="../ja/mod/core.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
<a href="../tr/mod/core.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comentarios</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
<script type="text/javascript"><!--//--><![CDATA[//><!--
var comments_shortname = 'httpd';
var comments_identifier = 'http://httpd.apache.org/docs/2.4/mod/core.html';
(function(w, d) {
if (w.location.hostname.toLowerCase() == "httpd.apache.org") {
d.write('<div id="comments_thread"><\/div>');
var s = d.createElement('script');
s.type = 'text/javascript';
s.async = true;
s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier;
(d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s);
}
else {
d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>');
}
})(window, document);
//--><!]]></script></div><div id="footer">
<p class="apache">Copyright 2023 The Apache Software Foundation.<br />Licencia bajo los términos de la <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
<p class="menu"><a href="../mod/">Módulos</a> | <a href="../mod/directives.html">Directivas</a> | <a href="http://wiki.apache.org/httpd/FAQ">Preguntas Frecuentes</a> | <a href="../glossary.html">Glosario</a> | <a href="../sitemap.html">Mapa del sitio web</a></p></div><script type="text/javascript"><!--//--><![CDATA[//><!--
if (typeof(prettyPrint) !== 'undefined') {
prettyPrint();
}
//--><!]]></script>
</body></html>
|
