SIP資料

SIP message 的語法規定 (BNF)

SIP-message = Request | Response

Request = Request-Line
*( message-header )
CRLF
[ message-body ]

Response = Status-Line
*( message-header )
CRLF
[ message-body ]

.......
參考資料  http://www.tech-invite.com/Ti-sip-abnf.html

 sip中文 介紹(寫的很像翻譯的spec害我誤會)

http://blog.xuite.net/livefish/blog/7585828