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Request (section 5) and Response (section 6) messages use the generic
+ message format of RFC 822 [9] for transferring entities (the payload
+ of the message). Both types of message consist of a start-line, zero
+ or more header fields (also known as "headers"), an empty line (i.e.
+, a line with nothing preceding the CRLF) indicating the end of the h
+eader fields, and possibly a message-body.
generic-message = start-line
...
CRLF
[ message-body ]
start-line = Request-Line | Status-Line