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+Lenient header value parsing
+============================
+
+Parsing with header value token checks off.
+
+## Header value with lenient
+
+<!-- meta={"type": "request-lenient-headers"} -->
+```http
+GET /url HTTP/1.1
+Header1: \f
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=4 span[url]="/url"
+off=9 url complete
+off=14 len=3 span[version]="1.1"
+off=17 version complete
+off=19 len=7 span[header_field]="Header1"
+off=27 header_field complete
+off=28 len=1 span[header_value]="\f"
+off=31 header_value complete
+off=33 headers complete method=1 v=1/1 flags=0 content_length=0
+off=33 message complete
+```
+
+## Second request header value with lenient
+
+<!-- meta={"type": "request-lenient-headers"} -->
+```http
+GET /url HTTP/1.1
+Header1: Okay
+
+
+GET /url HTTP/1.1
+Header1: \f
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=4 span[url]="/url"
+off=9 url complete
+off=14 len=3 span[version]="1.1"
+off=17 version complete
+off=19 len=7 span[header_field]="Header1"
+off=27 header_field complete
+off=28 len=4 span[header_value]="Okay"
+off=34 header_value complete
+off=36 headers complete method=1 v=1/1 flags=0 content_length=0
+off=36 message complete
+off=38 reset
+off=38 message begin
+off=38 len=3 span[method]="GET"
+off=41 method complete
+off=42 len=4 span[url]="/url"
+off=47 url complete
+off=52 len=3 span[version]="1.1"
+off=55 version complete
+off=57 len=7 span[header_field]="Header1"
+off=65 header_field complete
+off=66 len=1 span[header_value]="\f"
+off=69 header_value complete
+off=71 headers complete method=1 v=1/1 flags=0 content_length=0
+off=71 message complete
+```
+
+## Header value without lenient
+
+<!-- meta={"type": "request"} -->
+```http
+GET /url HTTP/1.1
+Header1: \f
+
+
+
+```
+
+```log
+off=0 message begin
+off=0 len=3 span[method]="GET"
+off=3 method complete
+off=4 len=4 span[url]="/url"
+off=9 url complete
+off=14 len=3 span[version]="1.1"
+off=17 version complete
+off=19 len=7 span[header_field]="Header1"
+off=27 header_field complete
+off=28 len=0 span[header_value]=""
+off=28 error code=10 reason="Invalid header value char"
+```
+
+### Empty headers separated by CR (Lenient)
+
+<!-- meta={"type": "request-lenient-headers"} -->
+```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 len=0 span[header_value]=""
+off=61 header_value complete
+off=61 len=17 span[header_field]="Transfer-Encoding"
+off=79 header_field complete
+off=80 len=7 span[header_value]="chunked"
+off=89 header_value complete
+off=91 headers complete method=3 v=1/1 flags=20a content_length=0
+off=94 chunk header len=1
+off=94 len=1 span[body]="A"
+off=97 chunk complete
+off=100 chunk header len=0
+```
+\ No newline at end of file