invite_all

SIP（Session Initiation Protocol）是由IETF定义

INVITE sip:5105@192.168.36.180:5060;user=phone SIP/2.0
Via: SIP/2.0/UDP 192.168.36.80:5060
From: 5225<sip:5225@192.168.36.80:5060>
To: <sip:5105@192.168.6.5:5060;user=phone>
Call-ID: 247515495@192.168.36.80
Accept: application/sdp
Accept-Encoding: crap
Accept-Language: da, en-gb
Allow: ACK
Authorization: PGP version=5.0
Content-Encoding: blah
Date: Thu, 01 Dec 2000 16:00:00 GMT
Encryption: Basic tony
Expires: Thu, 01 Dec 2000 16:00:00 GMT
Hide: route
In-Reply-To: [e-mail]
Max-Forwards: 6
MIME-Version: vovida
Organization: vovida
Priority: normal
Proxy-Authenticate: Basic tony
Proxy-Authorization: Basic tony
Proxy-Require: 192.23.2.2
Record-Route: <123.3.3.3>
Require: crap
Retry-After: 78
Response-Key: soemthi
Server: vovida.com
Subject: emald
Supported: SIP 2.0
Timestamp: 0001
Unsupported: sdp
User-Agent: vovidaua
Warning: some
WWW-Authenticate: Basic tony
CSeq: 1 INVITE
Subject: VovidaINVITE
Contact: <sip:6400@192.168.36.80:5060>
Content-Length: 0