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+Invalid requests
+================
+
+### ICE protocol and GET method
+
+<!-- meta={"type": "request"} -->
+```http
+GET /music/sweet/music ICE/1.0
+Host: example.com
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=18 span[url]="/music/sweet/music"
+off=23 url complete
+off=27 error code=8 reason="Expected SOURCE method for ICE/x.x request"
+```
+
+### ICE protocol, but not really
+
+<!-- meta={"type": "request"} -->
+```http
+GET /music/sweet/music IHTTP/1.0
+Host: example.com
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=18 span[url]="/music/sweet/music"
+off=23 url complete
+off=24 error code=8 reason="Expected HTTP/"
+```
+
+### RTSP protocol and PUT method
+
+<!-- meta={"type": "request"} -->
+```http
+PUT /music/sweet/music RTSP/1.0
+Host: example.com
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="PUT"
+off=3 method complete
+off=4 len=18 span[url]="/music/sweet/music"
+off=23 url complete
+off=28 error code=8 reason="Invalid method for RTSP/x.x request"
+```
+
+### HTTP protocol and ANNOUNCE method
+
+<!-- meta={"type": "request"} -->
+```http
+ANNOUNCE /music/sweet/music HTTP/1.0
+Host: example.com
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=8 span[method]="ANNOUNCE"
+off=8 method complete
+off=9 len=18 span[url]="/music/sweet/music"
+off=28 url complete
+off=33 error code=8 reason="Invalid method for HTTP/x.x request"
+```
+
+### Headers separated by CR
+
+<!-- meta={"type": "request"} -->
+```http
+GET / HTTP/1.1
+Foo: 1\rBar: 2
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=16 len=3 span[header_field]="Foo"
+off=20 header_field complete
+off=21 len=1 span[header_value]="1"
+off=23 error code=3 reason="Missing expected LF after header value"
+```
+
+### Headers separated by LF
+
+<!-- meta={"type": "request"} -->
+```http
+POST / HTTP/1.1
+Host: localhost:5000
+x:x\nTransfer-Encoding: chunked
+
+1
+A
+0
+
+```
+
+```log
+off=0 message begin
+off=0 len=4 span[method]="POST"
+off=4 method complete
+off=5 len=1 span[url]="/"
+off=7 url complete
+off=12 len=3 span[version]="1.1"
+off=15 version complete
+off=17 len=4 span[header_field]="Host"
+off=22 header_field complete
+off=23 len=14 span[header_value]="localhost:5000"
+off=39 header_value complete
+off=39 len=1 span[header_field]="x"
+off=41 header_field complete
+off=41 len=1 span[header_value]="x"
+off=42 error code=25 reason="Missing expected CR after header value"
+```
+
+### Headers separated by dummy characters
+
+<!-- meta={"type": "request"} -->
+```http
+GET / HTTP/1.1
+Connection: close
+Host: a
+\rZGET /evil: HTTP/1.1
+Host: a
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=16 len=10 span[header_field]="Connection"
+off=27 header_field complete
+off=28 len=5 span[header_value]="close"
+off=35 header_value complete
+off=35 len=4 span[header_field]="Host"
+off=40 header_field complete
+off=41 len=1 span[header_value]="a"
+off=44 header_value complete
+off=45 error code=2 reason="Expected LF after headers"
+```
+
+
+### Headers separated by dummy characters (lenient)
+
+<!-- meta={"type": "request-lenient-optional-lf-after-cr"} -->
+```http
+GET / HTTP/1.1
+Connection: close
+Host: a
+\rZGET /evil: HTTP/1.1
+Host: a
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=16 len=10 span[header_field]="Connection"
+off=27 header_field complete
+off=28 len=5 span[header_value]="close"
+off=35 header_value complete
+off=35 len=4 span[header_field]="Host"
+off=40 header_field complete
+off=41 len=1 span[header_value]="a"
+off=44 header_value complete
+off=45 headers complete method=1 v=1/1 flags=2 content_length=0
+off=45 message complete
+off=46 error code=5 reason="Data after `Connection: close`"
+```
+
+### Empty headers separated by CR
+
+<!-- meta={"type": "request" } -->
+```http
+POST / HTTP/1.1
+Connection: Close
+Host: localhost:5000
+x:\rTransfer-Encoding: chunked
+
+1
+A
+0
+
+```
+
+```log
+off=0 message begin
+off=0 len=4 span[method]="POST"
+off=4 method complete
+off=5 len=1 span[url]="/"
+off=7 url complete
+off=12 len=3 span[version]="1.1"
+off=15 version complete
+off=17 len=10 span[header_field]="Connection"
+off=28 header_field complete
+off=29 len=5 span[header_value]="Close"
+off=36 header_value complete
+off=36 len=4 span[header_field]="Host"
+off=41 header_field complete
+off=42 len=14 span[header_value]="localhost:5000"
+off=58 header_value complete
+off=58 len=1 span[header_field]="x"
+off=60 header_field complete
+off=61 error code=2 reason="Expected LF after CR"
+```
+
+### Empty headers separated by LF
+
+<!-- meta={"type": "request"} -->
+```http
+POST / HTTP/1.1
+Host: localhost:5000
+x:\nTransfer-Encoding: chunked
+
+1
+A
+0
+
+```
+
+```log
+off=0 message begin
+off=0 len=4 span[method]="POST"
+off=4 method complete
+off=5 len=1 span[url]="/"
+off=7 url complete
+off=12 len=3 span[version]="1.1"
+off=15 version complete
+off=17 len=4 span[header_field]="Host"
+off=22 header_field complete
+off=23 len=14 span[header_value]="localhost:5000"
+off=39 header_value complete
+off=39 len=1 span[header_field]="x"
+off=41 header_field complete
+off=42 error code=10 reason="Invalid header value char"
+```
+
+### Invalid header token #1
+
+<!-- meta={"type": "request", "noScan": true} -->
+```http
+GET / HTTP/1.1
+Fo@: Failure
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=18 error code=10 reason="Invalid header token"
+```
+
+### Invalid header token #2
+
+<!-- meta={"type": "request", "noScan": true} -->
+```http
+GET / HTTP/1.1
+Foo\01\test: Bar
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=19 error code=10 reason="Invalid header token"
+```
+
+### Invalid header token #3
+
+<!-- meta={"type": "request", "noScan": true} -->
+```http
+GET / HTTP/1.1
+: Bar
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=16 error code=10 reason="Invalid header token"
+```
+
+### Invalid method
+
+<!-- meta={"type": "request"} -->
+```http
+MKCOLA / HTTP/1.1
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=5 span[method]="MKCOL"
+off=5 method complete
+off=5 error code=6 reason="Expected space after method"
+```
+
+### Illegal header field name line folding
+
+<!-- meta={"type": "request", "noScan": true} -->
+```http
+GET / HTTP/1.1
+name
+ : value
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=20 error code=10 reason="Invalid header token"
+```
+
+### Corrupted Connection header
+
+<!-- meta={"type": "request", "noScan": true} -->
+```http
+GET / HTTP/1.1
+Host: www.example.com
+Connection\r\033\065\325eep-Alive
+Accept-Encoding: gzip
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=16 len=4 span[header_field]="Host"
+off=21 header_field complete
+off=22 len=15 span[header_value]="www.example.com"
+off=39 header_value complete
+off=49 error code=10 reason="Invalid header token"
+```
+
+### Corrupted header name
+
+<!-- meta={"type": "request", "noScan": true} -->
+```http
+GET / HTTP/1.1
+Host: www.example.com
+X-Some-Header\r\033\065\325eep-Alive
+Accept-Encoding: gzip
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=16 len=4 span[header_field]="Host"
+off=21 header_field complete
+off=22 len=15 span[header_value]="www.example.com"
+off=39 header_value complete
+off=52 error code=10 reason="Invalid header token"
+```
+
+### Missing CR between headers
+
+<!-- meta={"type": "request", "noScan": true} -->
+ 
+```http
+GET / HTTP/1.1
+Host: localhost
+Dummy: x\nContent-Length: 23
+
+GET / HTTP/1.1
+Dummy: GET /admin HTTP/1.1
+Host: localhost
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=16 len=4 span[header_field]="Host"
+off=21 header_field complete
+off=22 len=9 span[header_value]="localhost"
+off=33 header_value complete
+off=33 len=5 span[header_field]="Dummy"
+off=39 header_field complete
+off=40 len=1 span[header_value]="x"
+off=41 error code=25 reason="Missing expected CR after header value"
+```
+
+### Invalid HTTP version
+
+<!-- meta={"type": "request", "noScan": true} -->
+```http
+GET / HTTP/5.6
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="5.6"
+off=14 error code=9 reason="Invalid HTTP version"
+```
+
+## Invalid space after start line
+
+<!-- meta={"type": "request"} -->
+```http
+GET / HTTP/1.1
+ Host: foo
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=1 span[url]="/"
+off=6 url complete
+off=11 len=3 span[version]="1.1"
+off=14 version complete
+off=17 error code=30 reason="Unexpected space after start line"
+```
+
+
+### Only LFs present
+
+<!-- meta={"type": "request"} -->
+```http
+POST / HTTP/1.1\n\
+Transfer-Encoding: chunked\n\
+Trailer: Baz
+Foo: abc\n\
+Bar: def\n\
+\n\
+1\n\
+A\n\
+1;abc\n\
+B\n\
+1;def=ghi\n\
+C\n\
+1;jkl="mno"\n\
+D\n\
+0\n\
+\n\
+Baz: ghi\n\
+\n\
+```
+
+```log
+off=0 message begin
+off=0 len=4 span[method]="POST"
+off=4 method complete
+off=5 len=1 span[url]="/"
+off=7 url complete
+off=12 len=3 span[version]="1.1"
+off=15 version complete
+off=16 error code=9 reason="Expected CRLF after version"
+```
+
+### Only LFs present (lenient)
+
+<!-- meta={"type": "request-lenient-all"} -->
+```http
+POST / HTTP/1.1\n\
+Transfer-Encoding: chunked\n\
+Trailer: Baz
+Foo: abc\n\
+Bar: def\n\
+\n\
+1\n\
+A\n\
+1;abc\n\
+B\n\
+1;def=ghi\n\
+C\n\
+1;jkl="mno"\n\
+D\n\
+0\n\
+\n\
+Baz: ghi\n\
+\n
+```
+
+```log
+off=0 message begin
+off=0 len=4 span[method]="POST"
+off=4 method complete
+off=5 len=1 span[url]="/"
+off=7 url complete
+off=12 len=3 span[version]="1.1"
+off=15 version complete
+off=16 len=17 span[header_field]="Transfer-Encoding"
+off=34 header_field complete
+off=35 len=7 span[header_value]="chunked"
+off=43 header_value complete
+off=43 len=7 span[header_field]="Trailer"
+off=51 header_field complete
+off=52 len=3 span[header_value]="Baz"
+off=57 header_value complete
+off=57 len=3 span[header_field]="Foo"
+off=61 header_field complete
+off=62 len=3 span[header_value]="abc"
+off=66 header_value complete
+off=66 len=3 span[header_field]="Bar"
+off=70 header_field complete
+off=71 len=3 span[header_value]="def"
+off=75 header_value complete
+off=76 headers complete method=3 v=1/1 flags=208 content_length=0
+off=78 chunk header len=1
+off=78 len=1 span[body]="A"
+off=80 chunk complete
+off=82 len=3 span[chunk_extension_name]="abc"
+off=85 chunk_extension_name complete
+off=86 chunk header len=1
+off=86 len=1 span[body]="B"
+off=88 chunk complete
+off=90 len=3 span[chunk_extension_name]="def"
+off=94 chunk_extension_name complete
+off=94 len=3 span[chunk_extension_value]="ghi"
+off=97 chunk_extension_value complete
+off=98 chunk header len=1
+off=98 len=1 span[body]="C"
+off=100 chunk complete
+off=102 len=3 span[chunk_extension_name]="jkl"
+off=106 chunk_extension_name complete
+off=106 len=5 span[chunk_extension_value]=""mno""
+off=111 chunk_extension_value complete
+off=112 chunk header len=1
+off=112 len=1 span[body]="D"
+off=114 chunk complete
+off=117 chunk header len=0
+off=117 len=3 span[header_field]="Baz"
+off=121 header_field complete
+off=122 len=3 span[header_value]="ghi"
+off=126 header_value complete
+off=127 chunk complete
+off=127 message complete
+```
+\ No newline at end of file