6  
要求(Request)

Request-Line
           = Method SP Request-URI SP HTTP-Version CRLF

Method
           = "OPTIONS" | "GET" | "HEAD" | "POST" | "PUT" | "DELETE"
               | "TRACE"| "CONNECT" | extension-method

Request-URI
           = "*" | absoluteURI | abs_path | authority

HTTP-Version
           = "HTTP" "/" 1*DIGIT "." 1*DIGIT