Sample responses
================
## Simple response
```http
HTTP/1.1 200 OK
Header1: Value1
Header2:\t Value2
Content-Length: 0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=7 span[header_field]="Header1"
off=25 header_field complete
off=26 len=6 span[header_value]="Value1"
off=34 header_value complete
off=34 len=7 span[header_field]="Header2"
off=42 header_field complete
off=44 len=6 span[header_value]="Value2"
off=52 header_value complete
off=52 len=14 span[header_field]="Content-Length"
off=67 header_field complete
off=68 len=1 span[header_value]="0"
off=71 header_value complete
off=73 headers complete status=200 v=1/1 flags=20 content_length=0
off=73 message complete
```
## Error on invalid response start
Every response must start with `HTTP/`.
```http
HTTPER/1.1 200 OK
```
```log
off=0 message begin
off=4 error code=8 reason="Expected HTTP/"
```
## Empty body should not trigger spurious span callbacks
```http
HTTP/1.1 200 OK
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=19 headers complete status=200 v=1/1 flags=0 content_length=0
```
## Google 301
```http
HTTP/1.1 301 Moved Permanently
Location: http://www.google.com/
Content-Type: text/html; charset=UTF-8
Date: Sun, 26 Apr 2009 11:11:49 GMT
Expires: Tue, 26 May 2009 11:11:49 GMT
X-$PrototypeBI-Version: 1.6.0.3
Cache-Control: public, max-age=2592000
Server: gws
Content-Length: 219
\n\
301 Moved\n\
301 Moved
\n\
The document has moved\n\
here.
```
_(Note the `$` char in header field)_
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=17 span[status]="Moved Permanently"
off=32 status complete
off=32 len=8 span[header_field]="Location"
off=41 header_field complete
off=42 len=22 span[header_value]="http://www.google.com/"
off=66 header_value complete
off=66 len=12 span[header_field]="Content-Type"
off=79 header_field complete
off=80 len=24 span[header_value]="text/html; charset=UTF-8"
off=106 header_value complete
off=106 len=4 span[header_field]="Date"
off=111 header_field complete
off=112 len=29 span[header_value]="Sun, 26 Apr 2009 11:11:49 GMT"
off=143 header_value complete
off=143 len=7 span[header_field]="Expires"
off=151 header_field complete
off=152 len=29 span[header_value]="Tue, 26 May 2009 11:11:49 GMT"
off=183 header_value complete
off=183 len=22 span[header_field]="X-$PrototypeBI-Version"
off=206 header_field complete
off=207 len=7 span[header_value]="1.6.0.3"
off=216 header_value complete
off=216 len=13 span[header_field]="Cache-Control"
off=230 header_field complete
off=231 len=23 span[header_value]="public, max-age=2592000"
off=256 header_value complete
off=256 len=6 span[header_field]="Server"
off=263 header_field complete
off=264 len=3 span[header_value]="gws"
off=269 header_value complete
off=269 len=14 span[header_field]="Content-Length"
off=284 header_field complete
off=286 len=5 span[header_value]="219 "
off=293 header_value complete
off=295 headers complete status=301 v=1/1 flags=20 content_length=219
off=295 len=74 span[body]=""
off=369 len=1 span[body]=lf
off=370 len=37 span[body]="301 Moved"
off=407 len=1 span[body]=lf
off=408 len=18 span[body]="301 Moved
"
off=426 len=1 span[body]=lf
off=427 len=22 span[body]="The document has moved"
off=449 len=1 span[body]=lf
off=450 len=42 span[body]="here."
off=492 len=1 span[body]=cr
off=493 len=1 span[body]=lf
off=494 len=14 span[body]=""
```
## amazon.com
```http
HTTP/1.1 301 MovedPermanently
Date: Wed, 15 May 2013 17:06:33 GMT
Server: Server
x-amz-id-1: 0GPHKXSJQ826RK7GZEB2
p3p: policyref="http://www.amazon.com/w3c/p3p.xml",CP="CAO DSP LAW CUR ADM IVAo IVDo CONo OTPo OUR DELi PUBi OTRi BUS PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA HEA PRE LOC GOV OTC "
x-amz-id-2: STN69VZxIFSz9YJLbz1GDbxpbjG6Qjmmq5E3DxRhOUw+Et0p4hr7c/Q8qNcx4oAD
Location: http://www.amazon.com/Dan-Brown/e/B000AP9DSU/ref=s9_pop_gw_al1?_encoding=UTF8&refinementId=618073011&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=0SHYY5BZXN3KR20BNFAY&pf_rd_t=101&pf_rd_p=1263340922&pf_rd_i=507846
Vary: Accept-Encoding,User-Agent
Content-Type: text/html; charset=ISO-8859-1
Transfer-Encoding: chunked
1
\n
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=16 span[status]="MovedPermanently"
off=31 status complete
off=31 len=4 span[header_field]="Date"
off=36 header_field complete
off=37 len=29 span[header_value]="Wed, 15 May 2013 17:06:33 GMT"
off=68 header_value complete
off=68 len=6 span[header_field]="Server"
off=75 header_field complete
off=76 len=6 span[header_value]="Server"
off=84 header_value complete
off=84 len=10 span[header_field]="x-amz-id-1"
off=95 header_field complete
off=96 len=20 span[header_value]="0GPHKXSJQ826RK7GZEB2"
off=118 header_value complete
off=118 len=3 span[header_field]="p3p"
off=122 header_field complete
off=123 len=178 span[header_value]="policyref="http://www.amazon.com/w3c/p3p.xml",CP="CAO DSP LAW CUR ADM IVAo IVDo CONo OTPo OUR DELi PUBi OTRi BUS PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA HEA PRE LOC GOV OTC ""
off=303 header_value complete
off=303 len=10 span[header_field]="x-amz-id-2"
off=314 header_field complete
off=315 len=64 span[header_value]="STN69VZxIFSz9YJLbz1GDbxpbjG6Qjmmq5E3DxRhOUw+Et0p4hr7c/Q8qNcx4oAD"
off=381 header_value complete
off=381 len=8 span[header_field]="Location"
off=390 header_field complete
off=391 len=214 span[header_value]="http://www.amazon.com/Dan-Brown/e/B000AP9DSU/ref=s9_pop_gw_al1?_encoding=UTF8&refinementId=618073011&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=0SHYY5BZXN3KR20BNFAY&pf_rd_t=101&pf_rd_p=1263340922&pf_rd_i=507846"
off=607 header_value complete
off=607 len=4 span[header_field]="Vary"
off=612 header_field complete
off=613 len=26 span[header_value]="Accept-Encoding,User-Agent"
off=641 header_value complete
off=641 len=12 span[header_field]="Content-Type"
off=654 header_field complete
off=655 len=29 span[header_value]="text/html; charset=ISO-8859-1"
off=686 header_value complete
off=686 len=17 span[header_field]="Transfer-Encoding"
off=704 header_field complete
off=705 len=7 span[header_value]="chunked"
off=714 header_value complete
off=716 headers complete status=301 v=1/1 flags=208 content_length=0
off=719 chunk header len=1
off=719 len=1 span[body]=lf
off=722 chunk complete
off=725 chunk header len=0
off=727 chunk complete
off=727 message complete
```
## No headers and no body
```http
HTTP/1.1 404 Not Found
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=9 span[status]="Not Found"
off=24 status complete
off=26 headers complete status=404 v=1/1 flags=0 content_length=0
```
## No reason phrase
```http
HTTP/1.1 301
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=14 status complete
off=16 headers complete status=301 v=1/1 flags=0 content_length=0
```
## Empty reason phrase after space
```http
HTTP/1.1 200 \r\n\
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=15 status complete
off=17 headers complete status=200 v=1/1 flags=0 content_length=0
```
## No carriage ret
```http
HTTP/1.1 200 OK\n\
Content-Type: text/html; charset=utf-8\n\
Connection: close\n\
\n\
these headers are from http://news.ycombinator.com/
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=16 status complete
off=16 len=12 span[header_field]="Content-Type"
off=29 header_field complete
off=30 len=24 span[header_value]="text/html; charset=utf-8"
off=54 error code=10 reason="Invalid header value char"
```
## Underscore in header key
Shown by: `curl -o /dev/null -v "http://ad.doubleclick.net/pfadx/DARTSHELLCONFIGXML;dcmt=text/xml;"`
```http
HTTP/1.1 200 OK
Server: DCLK-AdSvr
Content-Type: text/xml
Content-Length: 0
DCLK_imp: v7;x;114750856;0-0;0;17820020;0/0;21603567/21621457/1;;~okv=;dcmt=text/xml;;~cs=o
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=6 span[header_field]="Server"
off=24 header_field complete
off=25 len=10 span[header_value]="DCLK-AdSvr"
off=37 header_value complete
off=37 len=12 span[header_field]="Content-Type"
off=50 header_field complete
off=51 len=8 span[header_value]="text/xml"
off=61 header_value complete
off=61 len=14 span[header_field]="Content-Length"
off=76 header_field complete
off=77 len=1 span[header_value]="0"
off=80 header_value complete
off=80 len=8 span[header_field]="DCLK_imp"
off=89 header_field complete
off=90 len=81 span[header_value]="v7;x;114750856;0-0;0;17820020;0/0;21603567/21621457/1;;~okv=;dcmt=text/xml;;~cs=o"
off=173 header_value complete
off=175 headers complete status=200 v=1/1 flags=20 content_length=0
off=175 message complete
```
## bonjourmadame.fr
The client should not merge two headers fields when the first one doesn't
have a value.
```http
HTTP/1.0 301 Moved Permanently
Date: Thu, 03 Jun 2010 09:56:32 GMT
Server: Apache/2.2.3 (Red Hat)
Cache-Control: public
Pragma: \r\n\
Location: http://www.bonjourmadame.fr/
Vary: Accept-Encoding
Content-Length: 0
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
```
```log
off=0 message begin
off=5 len=3 span[version]="1.0"
off=8 version complete
off=13 len=17 span[status]="Moved Permanently"
off=32 status complete
off=32 len=4 span[header_field]="Date"
off=37 header_field complete
off=38 len=29 span[header_value]="Thu, 03 Jun 2010 09:56:32 GMT"
off=69 header_value complete
off=69 len=6 span[header_field]="Server"
off=76 header_field complete
off=77 len=22 span[header_value]="Apache/2.2.3 (Red Hat)"
off=101 header_value complete
off=101 len=13 span[header_field]="Cache-Control"
off=115 header_field complete
off=116 len=6 span[header_value]="public"
off=124 header_value complete
off=124 len=6 span[header_field]="Pragma"
off=131 header_field complete
off=134 len=0 span[header_value]=""
off=134 header_value complete
off=134 len=8 span[header_field]="Location"
off=143 header_field complete
off=144 len=28 span[header_value]="http://www.bonjourmadame.fr/"
off=174 header_value complete
off=174 len=4 span[header_field]="Vary"
off=179 header_field complete
off=180 len=15 span[header_value]="Accept-Encoding"
off=197 header_value complete
off=197 len=14 span[header_field]="Content-Length"
off=212 header_field complete
off=213 len=1 span[header_value]="0"
off=216 header_value complete
off=216 len=12 span[header_field]="Content-Type"
off=229 header_field complete
off=230 len=24 span[header_value]="text/html; charset=UTF-8"
off=256 header_value complete
off=256 len=10 span[header_field]="Connection"
off=267 header_field complete
off=268 len=10 span[header_value]="keep-alive"
off=280 header_value complete
off=282 headers complete status=301 v=1/0 flags=21 content_length=0
off=282 message complete
```
## Spaces in header value
```http
HTTP/1.1 200 OK
Date: Tue, 28 Sep 2010 01:14:13 GMT
Server: Apache
Cache-Control: no-cache, must-revalidate
Expires: Mon, 26 Jul 1997 05:00:00 GMT
.et-Cookie: PlaxoCS=1274804622353690521; path=/; domain=.plaxo.com
Vary: Accept-Encoding
_eep-Alive: timeout=45
_onnection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html
Connection: close
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=4 span[header_field]="Date"
off=22 header_field complete
off=23 len=29 span[header_value]="Tue, 28 Sep 2010 01:14:13 GMT"
off=54 header_value complete
off=54 len=6 span[header_field]="Server"
off=61 header_field complete
off=62 len=6 span[header_value]="Apache"
off=70 header_value complete
off=70 len=13 span[header_field]="Cache-Control"
off=84 header_field complete
off=85 len=25 span[header_value]="no-cache, must-revalidate"
off=112 header_value complete
off=112 len=7 span[header_field]="Expires"
off=120 header_field complete
off=121 len=29 span[header_value]="Mon, 26 Jul 1997 05:00:00 GMT"
off=152 header_value complete
off=152 len=10 span[header_field]=".et-Cookie"
off=163 header_field complete
off=164 len=54 span[header_value]="PlaxoCS=1274804622353690521; path=/; domain=.plaxo.com"
off=220 header_value complete
off=220 len=4 span[header_field]="Vary"
off=225 header_field complete
off=226 len=15 span[header_value]="Accept-Encoding"
off=243 header_value complete
off=243 len=10 span[header_field]="_eep-Alive"
off=254 header_field complete
off=255 len=10 span[header_value]="timeout=45"
off=267 header_value complete
off=267 len=10 span[header_field]="_onnection"
off=278 header_field complete
off=279 len=10 span[header_value]="Keep-Alive"
off=291 header_value complete
off=291 len=17 span[header_field]="Transfer-Encoding"
off=309 header_field complete
off=310 len=7 span[header_value]="chunked"
off=319 header_value complete
off=319 len=12 span[header_field]="Content-Type"
off=332 header_field complete
off=333 len=9 span[header_value]="text/html"
off=344 header_value complete
off=344 len=10 span[header_field]="Connection"
off=355 header_field complete
off=356 len=5 span[header_value]="close"
off=363 header_value complete
off=365 headers complete status=200 v=1/1 flags=20a content_length=0
off=368 chunk header len=0
off=370 chunk complete
off=370 message complete
```
## Spaces in header name in strict mode
```http
HTTP/1.1 200 OK
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
en-US Content-Type: text/xml
Content-Type: text/xml
Content-Length: 16
Date: Fri, 23 Jul 2010 18:45:38 GMT
Connection: keep-alive
hello
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=6 span[header_field]="Server"
off=24 header_field complete
off=25 len=17 span[header_value]="Microsoft-IIS/6.0"
off=44 header_value complete
off=44 len=12 span[header_field]="X-Powered-By"
off=57 header_field complete
off=58 len=7 span[header_value]="ASP.NET"
off=67 header_value complete
off=72 error code=10 reason="Invalid header token"
```
## Spaces in header name in loose mode
`en-US Content-Type` must be treated as a header name
```http
HTTP/1.1 200 OK
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
en-US Content-Type: text/xml
Content-Type: text/xml
Content-Length: 16
Date: Fri, 23 Jul 2010 18:45:38 GMT
Connection: keep-alive
hello
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=6 span[header_field]="Server"
off=24 header_field complete
off=25 len=17 span[header_value]="Microsoft-IIS/6.0"
off=44 header_value complete
off=44 len=12 span[header_field]="X-Powered-By"
off=57 header_field complete
off=58 len=7 span[header_value]="ASP.NET"
off=67 header_value complete
off=67 len=18 span[header_field]="en-US Content-Type"
off=86 header_field complete
off=87 len=8 span[header_value]="text/xml"
off=97 header_value complete
off=97 len=12 span[header_field]="Content-Type"
off=110 header_field complete
off=111 len=8 span[header_value]="text/xml"
off=121 header_value complete
off=121 len=14 span[header_field]="Content-Length"
off=136 header_field complete
off=137 len=2 span[header_value]="16"
off=141 header_value complete
off=141 len=4 span[header_field]="Date"
off=146 header_field complete
off=147 len=29 span[header_value]="Fri, 23 Jul 2010 18:45:38 GMT"
off=178 header_value complete
off=178 len=10 span[header_field]="Connection"
off=189 header_field complete
off=190 len=10 span[header_value]="keep-alive"
off=202 header_value complete
off=204 headers complete status=200 v=1/1 flags=21 content_length=16
off=204 len=16 span[body]="hello"
off=220 message complete
```
## Non ASCII in status line
```http
HTTP/1.1 500 Oriëntatieprobleem
Date: Fri, 5 Nov 2010 23:07:12 GMT+2
Content-Length: 0
Connection: close
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=19 span[status]="Oriëntatieprobleem"
off=34 status complete
off=34 len=4 span[header_field]="Date"
off=39 header_field complete
off=40 len=30 span[header_value]="Fri, 5 Nov 2010 23:07:12 GMT+2"
off=72 header_value complete
off=72 len=14 span[header_field]="Content-Length"
off=87 header_field complete
off=88 len=1 span[header_value]="0"
off=91 header_value complete
off=91 len=10 span[header_field]="Connection"
off=102 header_field complete
off=103 len=5 span[header_value]="close"
off=110 header_value complete
off=112 headers complete status=500 v=1/1 flags=22 content_length=0
off=112 message complete
```
## HTTP version 0.9
```http
HTTP/0.9 200 OK
```
```log
off=0 message begin
off=5 len=3 span[version]="0.9"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=19 headers complete status=200 v=0/9 flags=0 content_length=0
```
## No Content-Length, no Transfer-Encoding
The client should wait for the server's EOF. That is, when neither
content-length nor transfer-encoding is specified, the end of body
is specified by the EOF.
```http
HTTP/1.1 200 OK
Content-Type: text/plain
hello world
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=12 span[header_field]="Content-Type"
off=30 header_field complete
off=31 len=10 span[header_value]="text/plain"
off=43 header_value complete
off=45 headers complete status=200 v=1/1 flags=0 content_length=0
off=45 len=11 span[body]="hello world"
```
## Response starting with CRLF
```http
\r\nHTTP/1.1 200 OK
Header1: Value1
Header2:\t Value2
Content-Length: 0
```
```log
off=2 message begin
off=7 len=3 span[version]="1.1"
off=10 version complete
off=15 len=2 span[status]="OK"
off=19 status complete
off=19 len=7 span[header_field]="Header1"
off=27 header_field complete
off=28 len=6 span[header_value]="Value1"
off=36 header_value complete
off=36 len=7 span[header_field]="Header2"
off=44 header_field complete
off=46 len=6 span[header_value]="Value2"
off=54 header_value complete
off=54 len=14 span[header_field]="Content-Length"
off=69 header_field complete
off=70 len=1 span[header_value]="0"
off=73 header_value complete
off=75 headers complete status=200 v=1/1 flags=20 content_length=0
off=75 message complete
```