SIPSIP 多方会话消息多方会话消息之实例讲解之实例讲解郑 昀郑 昀2005-052005-05应用开发事业部应用开发事业部神州泰岳神州泰岳http://www.ultrapower.com.cnhttp://www.ultrapower.com.cn

AgendaAgenda SIP INVITESIP INVITE 第一个用户第一个用户 SIP INVITESIP INVITE 第二个用户第二个用户 SIP SIP 第三个第三个 INVITEINVITE SIP SIP 发送发送 MESSAGEMESSAGE 消息消息

SIP – INVITESIP – INVITE 第一个用户第一个用户INVITE sip:192.168.1.81:2185;transport=tcp;ms-received-cid=200 SIP/2.0contact: <sip:tom@add.ultrapower.com.cn:3783;maddr=192.168.1.223;transport=tcp;ms-received-cid=700>via: SIP/2.0/TCP 192.168.1.223:9468;ms-received-port=3783;ms-received-cid=700max-forwards: 70from: “tom" <sip:tom@add.ultrapower.com.cn>;tag=82c18ee5fbe4429da6d5ec3653563251;epid=b048f84682to: <sip:jerry@add.ultrapower.com.cn>;epid=e1fb65a8b3call-id: 4517ca278efd43fa90361c0cc8949624cseq: 1 INVITERoster-Manager: sip:tom@add.ultrapower.com.cnEndPoints: “tom" <sip:tom@add.ultrapower.com.cn>, <sip:jerry@add.ultrapower.com.cn>supported: com.microsoft.rtc-multipartycontent-type: application/sdpcontent-length: 133

目的： tom 邀请第一个用户 jerry 加入会话supported: 列举了 UAC 或 UAS 支持的扩展Roster-Manager: “ 花名册管理员” 管理一个 Session 的用户登记列表EndPoints: 列出当前会话中所有的接收方的 SIP URI

11SIP/2.0 100 Tryingcseq: 1 INVITE

22

Tom Jerry

SIP/2.0 200 OKcontact: <sip:panqi@add.ultrapower.com.cn:2185;maddr=192.168.1.81;transport=tcp;ms-received-cid=200>cseq: 1 INVITEsupported: com.microsoft.rtc-multipartycontent-type: application/sdp 33ACK sip:jerry@add.ultrapower.com.cn:2185;maddr=192.168.1.81;transport=tcp;ms-received-cid=200 SIP/2.0from: "tom" <sip:tom@add.ultrapower.com.cn>;tag=82c18ee5fbe4429da6d5ec3653563251;epid=b048f84682to: <sip:jerry@add.ultrapower.com.cn>;epid=e1fb65a8b3;tag=0f3997c0c7b24658812a0a565899f6bfcseq: 1 ACKcontent-length: 0

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SIP – INVITESIP – INVITE 第二个用户第二个用户INVITE sip:192.168.1.80:2641;transport=tcp;ms-received-cid=400 SIP/2.0contact: <sip:tom@add.ultrapower.com.cn:3783;maddr=192.168.1.223;transport=tcp;ms-received-cid=700>from: "tom" <sip:tom@add.ultrapower.com.cn>;tag=834b5a151baa44e2849acfafa5ebdd3e;epid=b048f84682to: <sip:vicky@add.ultrapower.com.cn>;epid=0997132b14call-id: 4517ca278efd43fa90361c0cc8949624cseq: 1 INVITERoster-Manager: sip:tom@add.ultrapower.com.cnEndPoints: "tom" <sip:tom@add.ultrapower.com.cn>, <sip:jerry@add.ultrapower.com.cn>;epid=e1fb65a8b3, <sip:vicky@add.ultrapower.com.cn>require: com.microsoft.rtc-multipartycontent-type: application/sdpcontent-length: 133

目的： tom 邀请第二个用户 jerry(vikey) 加入会话require: UAC 通过 Require 字段列出的选项标签，告知 UAS 处理请求时需要支持的选项Roster-Manager: 还是第一个发起会话的用户作为花名册管理员EndPoints: 列出当前会话中三方的 SIP URI

11SIP/2.0 100 Tryingcseq: 1 INVITE

22

Tom

SIP/2.0 200 OKcontact: <sip:vicky@add.ultrapower.com.cn:2641;maddr=192.168.1.80;transport=tcp;ms-received-cid=400>cseq: 1 INVITEsupported: com.microsoft.rtc-multipartycontent-type: application/sdp 33ACK sip:vicky@add.ultrapower.com.cn:2641;maddr=192.168.1.80;transport=tcp;ms-received-cid=400 SIP/2.0from: "tom" <sip:tom@add.ultrapower.com.cn>;tag=82c18ee5fbe4429da6d5ec3653563251;epid=b048f84682to: <sip:vicky@add.ultrapower.com.cn>; epid=0997132b14;tag=6dba5f858604444591dd1d626b5b1a13cseq: 1 ACKcontent-length: 0

Vicky

44

SIP – SIP – 第三个第三个 INVITEINVITE

INVITE sip:192.168.1.81:2185;transport=tcp;ms-received-cid=200 SIP/2.0contact: <sip:vicky@add.ultrapower.com.cn:2641;maddr=192.168.1.80;transport=tcp;ms-received-cid=400>via: SIP/2.0/TCP 192.168.1.80:8426;ms-received-port=2641;ms-received-cid=400max-forwards: 70from: <sip:vicky@add.ultrapower.com.cn>;tag=aaa00d60672b403b8a5d799bcd1401bb;epid=0997132b14to: <sip:jerry@add.ultrapower.com.cn>;epid=e1fb65a8b3call-id: 4517ca278efd43fa90361c0cc8949624cseq: 1 INVITETriggeredInvite: TRUErequire: com.microsoft.rtc-multiparty

目的： vicky 再邀请 jerry 加入会话TriggeredInvite: 表明本次 INVITE 消息是被触发的，而不是 vicky 主动发起的

11SIP/2.0 100 Tryingcseq: 1 INVITE

22SIP/2.0 200 OKcontact: <sip:jerry@add.ultrapower.com.cn:2641;maddr=192.168.1.81;transport=tcp;ms-received-cid=200>cseq: 1 INVITEsupported: com.microsoft.rtc-multipartycontent-type: application/sdp 33ACK sip:jerry@add.ultrapower.com.cn:2185;maddr=192.168.1.81;transport=tcp;ms-received-cid=200 SIP/2.0from: "tom" <sip:tom@add.ultrapower.com.cn>;tag=82c18ee5fbe4429da6d5ec3653563251;epid=b048f84682to: <sip:jerry@add.ultrapower.com.cn>;epid=e1fb65a8b3;tag=0f3997c0c7b24658812a0a565899f6bfcseq: 1 ACKcontent-length: 0

VickyJerry

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SIP – SIP – 发送发送 MESSAGEMESSAGE 消息消息MESSAGE sip:vicky@add.ultrapower.com.cn:2641;maddr=192.168.1.80;transport=tcp;ms-received-cid=400 SIP/2.0contact: <sip:tom@add.ultrapower.com.cn:3783;maddr=192.168.1.223;transport=tcp;ms-received-cid=700>cseq: 3 MESSAGEcseq: 3 MESSAGEcontent-type: text/plain; charset=UTF-8;

目的： tom 写一个 message ，实际上先后向 vicky 和 jerry 发送消息

SIP/2.0 200 OKcontact: <sip:vicky@add.ultrapower.com.cn:2641;maddr=192.168.1.80;transport=tcp;ms-received-cid=400>cseq: 3 MESSAGEcseq: 3 MESSAGE

Jerry

Vicky1122

33 MESSAGE sip:jerry@add.ultrapower.com.cn:2185;maddr=192.168.1.81;transport=tcp;ms-received-cid=200 SIP/2.0contact: <sip:tom@add.ultrapower.com.cn:3783;maddr=192.168.1.223;transport=tcp;ms-received-cid=700>cseq: 4 MESSAGEcseq: 4 MESSAGEcontent-type: text/plain; charset=UTF-8;

44

SIP/2.0 200 OKcontact: <sip:jerry@add.ultrapower.com.cn:2185;maddr=192.168.1.81;transport=tcp;ms-received-cid=200>cseq: 4 MESSAGEcseq: 4 MESSAGE

Tom

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