SIP message format [1]
SIP message requests and responses are divided into two categories.
Request message is the UAC (client) sent to UAS (server), the response message is sent to UAS UAC.
Whether the request message or a response message, it is made a start line, a number of a header field and a message body.
Message format:
Start line
the message header (several header field)
empty line
message body (SDP)
The following examples (obtained by the capture wireshark sip package):
(1) Start Line
(2) message header
(3) Message Body
【2】
Good Good Study, Day Day Up.
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