SIP多方会话消息之实例讲解下载.ppt

SIP多方会话消息之实例讲解 Agenda SIPINVITE第一个用户SIPINVITE第二个用户SIP第三个INVITESIP发送MESSAGE消息 SIP INVITE第一个用户 INVITEsip 192 168 1 81 2185 transport tcp ms received cid 200SIP 2 0contact via SIP 2 0 TCP192 168 1 223 9468 ms received port 3783 ms received cid 700max forwards 70from tom tag 82c18ee5fbe4429da6d5ec3653563251 epid b048f84682to epid e1fb65a8b3call id 4517ca278efd43fa90361c0cc8949624cseq 1INVITERoster Manager sip tom EndPoints tom 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SIPURI 1 SIP 2 0100Tryingcseq 1INVITE 2 SIP 2 0200OKcontact cseq 1INVITEsupported com microsoft rtc multipartycontent type application sdp 3 ACKsip jerry 2185 maddr 192 168 1 81 transport tcp ms received cid 200SIP 2 0from tom tag 82c18ee5fbe4429da6d5ec3653563251 epid b048f84682to epid e1fb65a8b3 tag 0f3997c0c7b24658812a0a565899f6bfcseq 1ACKcontent length 0 4 SIP INVITE第二个用户 INVITEsip 192 168 1 80 2641 transport tcp ms received cid 400SIP 2 0contact from tom tag 834b5a151baa44e2849acfafa5ebdd3e epid b048f84682to epid 0997132b14call id 4517ca278efd43fa90361c0cc8949624cseq 1INVITERoster Manager sip tom EndPoints tom epid e1fb65a8b3 require com microsoft rtc multipartycontent type application sdpcontent length 133 目的 tom邀请第二个用户jerry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SIPURI 1 SIP 2 0100Tryingcseq 1INVITE 2 SIP 2 0200OKcontact cseq 1INVITEsupported com microsoft rtc multipartycontent type application sdp 3 ACKsip vicky 2641 maddr 192 168 1 80 transport tcp ms received cid 400SIP 2 0from tom tag 82c18ee5fbe4429da6d5ec3653563251 epid b048f84682to epid 0997132b14 tag 6dba5f858604444591dd1d626b5b1a13cseq 1ACKcontent length 0 4 SIP 第三个INVITE INVITEsip 192 168 1 81 2185 transport tcp ms received cid 200SIP 2 0contact via SIP 2 0 TCP192 168 1 80 8426 ms received port 2641 ms received cid 400max forwards 70from tag aaa00d60672b403b8a5d799bcd1401bb epid 0997132b14to epid e1fb65a8b3call id 4517ca278efd43fa90361c0cc8949624cseq 1INVITETriggeredInvite 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 1 SIP 2 0100Tryingcseq 1INVITE 2 SIP 2 0200OKcontact cseq 1INVITEsupported com microsoft rtc multipartycontent type application sdp 3 ACKsip jerry 2185 maddr 192 168 1 81 transport tcp ms received cid 200SIP 2 0from tom tag 82c18ee5fbe4429da6d5ec3653563251 epid b048f84682to epid e1fb65a8b3 tag 0f3997c0c7b24658812a0a565899f6bfcseq 1ACKcontent length 0 4 SIP 发送MESSAGE消息 MESSAGEsip vicky 2641 maddr 192 168 1 80 transport tcp ms received cid 400SIP 2 0contact cseq 3MESSAGEcontent 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 0200OKcontact cseq 3MESSAGE 1 2 3 MESSAGEsip jerry 2185 maddr