golangWebRTC

WebRTC笔记1-SDP解释

2017-02-20  本文已影响717人  yang_21312

WebRTC SDP 的协议解释。

全局描述

o=- 4611731400430051336 2 IN IP4 127.0.0.1
s=-
t=0 0
a=group:BUNDLE audio video
a=msid-semantic:WMS lgsCFqt9kN2fVKw5wg3NKqGdATQoltEwOdMS

音频

m=audio 58779 UDP / TLS / RTP / SAVPF 111 103 104 9 0 8 106 105 13 126
c=IN IP4 217.130.243.155

ICE Candidates

重点来了

a=candidate:1467250027 1 udp 2122260223 192.168.0.196 46243 typ host generation 0
a=candidate:1467250027 2 udp 2122260222 192.168.0.196 56280 typ host generation 0
a=candidate:435653019 1 tcp 1845501695 192.168.0.196 0 typ host tcptype active generation 0
a=candidate:435653019 2 tcp 1845501695 192.168.0.196 0 typ host tcptype active generation 0
a=candidate:1853887674 1 udp 1518280447 47.61.61.61 36768 typ srflx raddr 192.168.0.196 rport 36768 generation 0
a=candidate:1853887674 2 udp 1518280447 47.61.61.61 36768 typ srflx raddr 192.168.0.196 rport 36768 generation 0
a=candidate:750991856 2 udp 25108222 237.30.30.30 51472 typ relay raddr 47.61.61.61 rport 54763 generation 0
a=candidate:750991856 1 udp 25108223 237.30.30.30 58779 typ relay raddr 47.61.61.61 rport 54761 generation 0

ICE Parameters

a=ice-ufrag:Oyef7uvBlwafI3hT
a=ice-pwd:T0teqPLNQQOf+5W+ls+P2p16
a=fingerprint:sha-256 49:66:12:17:0D:1C:91:AE:57:4C:C6:36:DD:D5:97:D2:7D:62:C9:9A:7F:B9:A3:F4:70:03:E7:43:91:73:23:5E
a=sendrecv
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