SIP 协议之 注销(三)

协议之 注销(三)"/>

SIP 协议之 注销(三)

前言

本篇主要讲解SIP 的注销流程

1、注销流程

（1）终端向代理服务器发送register消息注销，其头中expire字段设置为0。

（2）代理服务器在收到后送回200OK响应，并将数据库中的用户有关消息注销。

2、注册信令参考

REGISTER sip:sh.gg:5061;transport=tls SIP/2.0
Via: SIP/2.0/TLS 192.168.1.104:51729;branch=z9hG4bKb48e6d88a4a0a1a3;rport
Contact: <sip:1001-0x1f38a58@192.168.1.104:51729;transport=tls>;expires=0
Max-Forwards: 70
Authorization: Digest username="1001", realm="sh.gg", nonce="eda2631e-93bf-4300-9bb8-8f9e26cf4232", uri="sip:sh.gg:5061;transport=tls", response="337caf7cc6ca2231e2d4012c905ca858"To: <sip:1001@sh.gg:5061;transport=tls>
From: <sip:1001@sh.gg:5061;transport=tls>;tag=59c2a6d0cd38e2f0
Call-ID: 26be839a1da7b5b3
CSeq: 42825 REGISTER
User-Agent: 1.0.2
Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE
Keepalive: 30
Content-Length: 0SIP/2.0 200 OK
Contact: <sip:218.94.29.190:8485;expires=0>
Via: SIP/2.0/TLS 192.168.1.104:51729;branch=z9hG4bKb48e6d88a4a0a1a3;rport=8485;received=218.94.29.190
To: <sip:1001@sh.gg:5061;transport=tls>
From: <sip:1001@sh.gg:5061;transport=tls>;tag=59c2a6d0cd38e2f0
Call-ID: 26be839a1da7b5b3
CSeq: 42825 REGISTER
Content-Length: 0// Authorization 还是需要的