WebRTC系列（2）：room server,signalin

作者: C_GO流媒体后台开发 | 来源:发表于2019-02-18 16:04 被阅读3次

WebRTC系列（2）：room server,signalin
Webrtc服务器搭建
webrtc中继服务器turn配置的若干种办法
OWT (Open WebRTC Toolkit) 混屏模块代码
webrtc server 类别
KMS and WebRTC
Janus WebRTC Server研究
Android中Room Persistent Library介
信令、Stun、Turn，ICE
2023-03-02 Android WebRTC流程梳理

该文章为转载，原文地址：WebRTC系列（2）：room server,signaling server 和客户端之间的交互

room server,signaling server 和客户端之间的交互

一、App版本（iOS为例）

单方向连接：

1.界面app已设定好，输入房间号后，点击join按钮。

[NSURLConnection sendAsynchronousRequest:request
                                            queue:[NSOperationQueue mainQueue]
                          completionHandler:^(NSURLResponse *response,
                                              NSData *data,
                                              NSError *error) {
             if (completionHandler) {
                   completionHandler(response, data, error);
                }
            }];

向[服务器]发送请求：
request

request:  GET : turnServerUrl=[https://www.skyrtc.info/index.php?username=apprtc&key=0xc401269c75bda99dd198c568d5694730](https://www.skyrtc.info/index.php?username=apprtc&key=0xc401269c75bda99dd198c568d5694730)

response

         response: { URL: [https://www.skyrtc.info/index.php?username=apprtc&key=0xc401269c75bda99dd198c568d5694730](https://www.skyrtc.info/index.php?username=apprtc&key=0xc401269c75bda99dd198c568d5694730) } { status code: 200, headers {
         Connection = "keep-alive";
         "Content-Type" = "text/html";
          Date = "Fri, 16 Jun 2017 09:10:29 GMT";
          Server = "nginx/1.5.9";
          "Transfer-Encoding" = Identity;
           "X-Powered-By" = "PHP/5.5.9-1ubuntu4.21";
           } }

data:

              iceServers =     (
                {
            credential = "yjp0ArWpl1s8vOYegRGpYRU/XzU=";
            ttl = [86400](https://www.baidu.com/s?wd=86400&tn=24004469_oem_dg&rsv_dl=gh_pl_sl_csd);
            urls =             (
                "turn:[www.skyrtc.info](http://www.skyrtc.info/):3478?transport=udp",
                "turn:[www.skyrtc.info](http://www.skyrtc.info/):3478?transport=tcp",
                "turn:[www.skyrtc.info](http://www.skyrtc.info/):3479?transport=udp",
                "turn:[www.skyrtc.info](http://www.skyrtc.info/):3479?transport=tcp"
            );
            user[na](https://www.baidu.com/s?wd=na&tn=24004469_oem_dg&rsv_dl=gh_pl_sl_csd)me = "1497605539:";
        }
    );

request:

             POST: url = [https://www.skyrtc.info/join/123456](https://www.skyrtc.info/join/1123345)

response:

              { URL: [https://www.skyrtc.info/join/123456](https://www.skyrtc.info/join/1123345) } { status code: 200, headers {
                           "Cache-Control" = "no-cache";
                            Connection = "keep-alive";
                           "Content-Length" = 1230;
                           "Content-Type" = "text/html; charset=utf-8";
                            Date = "Fri, 16 Jun 2017 09:38:42 GMT";
                            Server = "nginx/1.5.9";
                               } }

data:

                    params    Object
                    wss_url    "wss://www.skyrtc.info:4432/ws"
                    pc_config    "{\"rtcpMuxPolicy\": \"require…dlePolicy\": \"max-bundle\"}"
                    room_id    "622620833"
                    turn_url    "https://www.skyrtc.info/index…username=27212903&key=apprtc"
                    error_messages    []
                    wss_post_url    "[https://www.skyrtc.info:4432](https://www.skyrtc.info:4432/)"
                    callstats_params    "{\"appId\": \"none\", \"appSecret\": \"none\"}"
                    include_rtstats_js    ""
                    version_info    "{\"branch\": \"master\", \"gi…Mar 6 07:49:29 2017 +0100\"}"
                    messages    []
                    ice_server_transports    ""
                    warning_messages    []
                    media_constraints    "{\"video\": true, \"audio\": true}"
                    is_loopback    "false"
                    pc_constraints    "{\"optional\": []}"
                    room_link    "[http://www.skyrtc.info/r/](http://www.skyrtc.info/r/622620833)roomID"
                    offer_options    "{}"
                    is_initiator    "true"
                    ice_server_url    "[https://www.skyrtc.info/v1alpha/iceconfig?key=none](https://www.skyrtc.info/v1alpha/iceconfig?key=none)"
                    include_loopback_js    ""
                    client_id    "27212903"
                    turn_server_override    []
                    bypass_join_confirmation    "false"
                    result    “SUCCESS"

2.上面返回的信息中有wss_url，”wss://www.skyrtc.info:4432/ws"，wss_post_url “https://www.skyrtc.info:4432”，即是websocketUrl，初始化websocket,注册信令，创建主机tcp /ip端口可读写流。
3.创建peerconnection ,创建LocalMediaStream:videoTrack，audioTrack.发送offer.
4.通过websocket输入输出

outPutStream: outPutBuffer:

                   GET /ws HTTP/1.1
                   Host: [www.skyrtc.info](http://www.skyrtc.info/):4432
                   Sec-WebSocket-Version:13
                   Upgrade:websocket
                   Dec-WebSocket-Key:tu1zu……==
                   Connection:Upgrade Origin:[https://www.skyrtc.info:4432](https://www.skyrtc.info:4432/)

inputStream:readBuffer

                  HTTP1.1  101 Switching Protocols                                 

                               Upgrade   "websocket"

                               Connection    "Upgrade"

                              Sec-WebSocket-Accept    "geUmCmY/h7EFD1/qjbtzyfy1g04="

服务器返回上面代码，表示websocket协议请求成功，状态码101表示服务器客户端升级协议的请求正在进行协议切换，以后的通信就是websocket协议，后续就可以tcp通讯了。

5.websocket注册成功：
log：

  WebSocket connection opened.
 Registering on WSS for rid:123456 cid:09876543

outPutStream:outPutBuffer：

                 message = {
                               "cmd" : "register",
                               "roomid" : "123456",
                               "clientid" : "09876543"
                      }

6.log :Signaling state changed: 1:LocalOffer
ICE gathering state changed: 1:Checking
调用PTCPeerConection方法实现
7.SDP

log:

C->RS POST: {"type":"offer","sdp":"v=0\r\no=- 7930074291607742461 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE audio video\r\na=msid-semantic: WMS ARDAMS\r\nm=audio 9 UDP\/TLS\/RTP\/SAVPF 111 103 104 9 102 0 8 106 105 13 127 126\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:9z7jtEySOjadK2L3\r\na=ice-pwd:P1FSuJPZnkh3t3OU+JWzY3tn\r\na=fingerprint:sha-256 CB:94:1B:E8:AB:B0:D6:EC:BC:B6:54:52:87:17:FC:8D:B4:76:3A:FA:6C:96:D7:BE:32:D7:BD:33:26:5D:20:55\r\na=setup:actpass\r\na=mid:audio\r\na=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\na=extmap:3 http:\/\/[www.webrtc.org](http://www.webrtc.org/)\/experiments\/rtp-hdrext\/abs-send-time\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:111 opus\/48000\/2\r\na=fmtp:111 minptime=10; useinbandfec=1\r\na=rtpmap:103 ISAC\/16000\r\na=rtpmap:104 ISAC\/32000\r\na=rtpmap:9 G722\/8000\r\na=rtpmap:102 ILBC\/8000\r\na=rtpmap:0 PCMU\/8000\r\na=rtpmap:8 PCMA\/8000\r\na=rtpmap:106 CN\/32000\r\na=rtpmap:105 CN\/16000\r\na=rtpmap:13 CN\/8000\r\na=rtpmap:127 red\/8000\r\na=rtpmap:126 telephone-event\/8000\r\na=maxptime:60\r\na=ssrc:282299390 cname:dwTJJogpUnEjR9By\r\na=ssrc:282299390 msid:ARDAMS ARDAMSa0\r\na=ssrc:282299390 mslabel:ARDAMS\r\na=ssrc:282299390 label:ARDAMSa0\r\nm=video 9 UDP\/TLS\/RTP\/SAVPF 100 101 116 117 96\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:9z7jtEySOjadK2L3\r\na=ice-pwd:P1FSuJPZnkh3t3OU+JWzY3tn\r\na=fingerprint:sha-256 CB:94:1B:E8:AB:B0:D6:EC:BC:B6:54:52:87:17:FC:8D:B4:76:3A:FA:6C:96:D7:BE:32:D7:BD:33:26:5D:20:55\r\na=setup:actpass\r\na=mid:video\r\na=extmap:2 urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:3 http:\/\/[www.webrtc.org](http://www.webrtc.org/)\/experiments\/rtp-hdrext\/abs-send-time\r\na=extmap:4 urn:3gpp:video-orientation\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:100 VP8\/90000\r\na=rtcp-fb:100 ccm fir\r\na=rtcp-fb:100 nack\r\na=rtcp-fb:100 nack pli\r\na=rtcp-fb:100 goog-remb\r\na=rtpmap:101 VP9\/90000\r\na=rtcp-fb:101 ccm fir\r\na=rtcp-fb:101 nack\r\na=rtcp-fb:101 nack pli\r\na=rtcp-fb:101 goog-remb\r\na=rtpmap:116 red\/90000\r\na=rtpmap:117 ulpfec\/90000\r\na=rtpmap:96 rtx\/90000\r\na=fmtp:96 apt=100\r\na=ssrc-group:FID 797147928 458665663\r\na=ssrc:797147928 cname:dwTJJogpUnEjR9By\r\na=ssrc:797147928 msid:ARDAMS ARDAMSv0\r\na=ssrc:797147928 mslabel:ARDAMS\r\na=ssrc:797147928 label:ARDAMSv0\r\na=ssrc:458665663 cname:dwTJJogpUnEjR9By\r\na=ssrc:458665663 msid:ARDAMS ARDAMSv0\r\na=ssrc:458665663 mslabel:ARDAMS\r\na=ssrc:458665663 label:ARDAMSv0\r\n”}

            [self sendSignalingMessage:sdp]
            [self sendSignalingMessageToRoomServer:sdp completionHandler:nil];

sdp:

             v=0
             o=- 631685190248252292 2 IN IP4 127.0.0.1
             s=-
             t=0 0
             a=group:BUNDLE audio video
             a=msid-semantic: WMS ARDAMS
             m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 102 0 8 106 105 13 127 126
             c=IN IP4 0.0.0.0
             a=rtcp:9 IN IP4 0.0.0.0
             a=ice-ufrag:ktg6AGYFl6ibNPGY
             a=ice-pwd:ZL5KQbLLCNZkDIy0Zt0DXWZ2
             a=fingerprint:sha-256 DF:4B:02:9E:4E:78:98:75:BD:E8:13:B4:FD:E5:72:EE:24:B5:36:43:73:6E:A1:3C:4C:13:FD:7A:15:30:5F:E8
             a=setup:actpass
             a=mid:audio
             a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
             a=extmap:3 [http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time](http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time)
             a=sendrecv
             a=rtcp-mux
             a=rtpmap:111 opus/48000/2
             a=fmtp:111 minptime=10; useinbandfec=1
             a=rtpmap:103 ISAC/16000
             a=rtpmap:104 ISAC/32000
             a=rtpmap:9 G722/8000
             a=rtpmap:102 ILBC/8000
             a=rtpmap:0 PCMU/8000
             a=rtpmap:8 PCMA/8000
             a=rtpmap:106 CN/32000
             a=rtpmap:105 CN/16000
             a=rtpmap:13 CN/8000
             a=rtpmap:127 red/8000
             a=rtpmap:126 telephone-event/8000
             a=maxptime:60
             a=ssrc:1330996120 cname:BeTH+Ahwn2YbXhAJ
             a=ssrc:1330996120 msid:ARDAMS ARDAMSa0
             a=ssrc:1330996120 mslabel:ARDAMS
             a=ssrc:1330996120 label:ARDAMSa0
             m=video 9 UDP/TLS/RTP/SAVPF 100 101 116 117 96
             c=IN IP4 0.0.0.0
             a=rtcp:9 IN IP4 0.0.0.0
             a=ice-ufrag:ktg6AGYFl6ibNPGY
             a=ice-pwd:ZL5KQbLLCNZkDIy0Zt0DXWZ2
             a=fingerprint:sha-256 DF:4B:02:9E:4E:78:98:75:BD:E8:13:B4:FD:E5:72:EE:24:B5:36:43:73:6E:A1:3C:4C:13:FD:7A:15:30:5F:E8
             a=setup:actpass
             a=mid:video
             a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
             a=extmap:3 [http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time](http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time)
             a=extmap:4 urn:3gpp:video-orientation
             a=sendrecv
             a=rtcp-mux
             a=rtpmap:100 VP8/90000
             a=rtcp-fb:100 ccm fir
             a=rtcp-fb:100 nack
             a=rtcp-fb:100 nack pli
             a=rtcp-fb:100 goog-remb
             a=rtpmap:101 VP9/90000
             a=rtcp-fb:101 ccm fir
             a=rtcp-fb:101 nack
             a=rtcp-fb:101 nack pli
             a=rtcp-fb:101 goog-remb
             a=rtpmap:116 red/90000
             a=rtpmap:117 ulpfec/90000
             a=rtpmap:96 rtx/90000
             a=fmtp:96 apt=100
             a=ssrc-group:FID 3011579612 365513713
             a=ssrc:3011579612 cname:BeTH+Ahwn2YbXhAJ
             a=ssrc:3011579612 msid:ARDAMS ARDAMSv0
             a=ssrc:3011579612 mslabel:ARDAMS
             a=ssrc:3011579612 label:ARDAMSv0
             a=ssrc:365513713 cname:BeTH+Ahwn2YbXhAJ
             a=ssrc:365513713 msid:ARDAMS ARDAMSv0
             a=ssrc:365513713 mslabel:ARDAMS
             a=ssrc:365513713 label:ARDAMSv0

request:

request.HTTPMethod = POST: url = [https://www.skyrtc.info/message/45677/60574066](https://www.skyrtc.info/message/45677/60574066)
                          A. request.HTTPBody = sdp;
                              block函数为nil,没有设置返回值
                          B.request.HTTPBody = icecandidate;
                              其中icecandidate 从[peerConnection  gotICECandidate]获取到的。

log :

{
                    "label" : 0,
                    "id" : "audio",
                    "candidate" : "candidate:3672176605 1 udp 2122260223 192.168.153.194 55122 typ host generation 0",
                    "type" : "candidate"
                    }
                  {"label" : 1,
                    "id" : "video",
                    "candidate" : "candidate:3005921308 1 udp 1686052607 1.85.223.111 10107 typ srflx raddr 192.168.153.194 rport 65478 generation 0",
                    "type" : "candidate"
                   }

response:

                          { URL: [https://www.skyrtc.info/message/46789/02181168](https://www.skyrtc.info/message/46789/02181168) } { status code: 200, headers {
                            "Cache-Control" = "no-cache";
                             Connection = "keep-alive";
                            "Content-Length" = 21;
                            "Content-Type" = "text/html; charset=utf-8";
                             Date = "Fri, 16 Jun 2017 10:50:36 GMT";
                            Server = "nginx/1.5.9";
                         } }
           data: result :SUCCESS

房间服务器收到 /message/消息后将request.HTTPBody的信息sdp，icecandidate发送给信令服务器。

8.挂断

request :

POST:url = [https://www.skyrtc.info/leave/123456/09876543](https://www.skyrtc.info/leave/5678742/49436278)

[ ](https://www.skyrtc.info/leave/5678742/49436278)

response:

{ URL: [https://www.skyrtc.info/leave/123456/0987](https://www.skyrtc.info/leave/5678742/49436278)6543} { status code: 200, headers {
                           "Cache-Control" = "no-cache";
                            Connection = "keep-alive"; 
                           "Content-Type" = "text/html; charset=utf-8";
                            Date = "Fri, 16 Jun 2017 09:38:42 GMT";
                            Server = "nginx/1.5.9";
                               } }
             data : 0 bytes

             outPutStream:outPutBuffer：

                 message = {
                               "cmd" : "send",
                               "msg":"{type:"bye"}"
                           }

websocket:

request :

DELETE:url =[https://www.skyrtc.info:443](https://www.skyrtc.info/leave/5678742/49436278)[2](https://www.skyrtc.info/leave/5678742/49436278)[/](https://www.skyrtc.info/leave/5678742/49436278)[ ](https://www.skyrtc.info/leave/5678742/49436278)[123456/0987](https://www.skyrtc.info/leave/5678742/49436278)6543
request.HTTPMethod:"Delete"
request.HTTPBody:nil 
[ ](https://www.skyrtc.info/leave/5678742/49436278)

response:

{ URL:[https://www.skyrtc.info:4432/ ](https://www.skyrtc.info/leave/5678742/49436278)[123456/0987](https://www.skyrtc.info/leave/5678742/49436278)6543} { status code: 200, headers {

*   "Acess-Control-Allow-Methods" = "POST,DELETE"; 
                               "Acess-Control-Allow-Origin"="*" 
                               "Content-Length" = 3;
      Connection = "keep-alive";
      "Content-Type" = "text/html; charset=utf-8";
                                 Date = "Fri, 16 Jun 2017 09:38:42 GMT";
      Server = "nginx/1.5.9";
      } }

             data : OK

加入到同一个房间

房间的最大人数是在房间服务器room.go中设定，默认为2个人。client A 注册房间号，向websocket发送

             message = {

                               "cmd" : "register",

                               "roomid" : "123456",

                               "clientid" : "09876543"

                      }

信息，clientID 是随机生成的，当client A和client B进入同一个房间时，websocket打开client A 和client B的ReadWriteClose接口，会相互发送对方的msg

获取到对方的sdp，answer和icecandidate

inputStream：readBuffer

         {"type":"answer","sdp":"v=0\r\no=- 2842181041571733368 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE audio video\r\na=msid-semantic: WMS ARDAMS\r\nm=audio 9 UDP\/TLS\/RTP\/SAVPF 111 103 104 9 102 0 8 106 105 13 126\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:5EBa\r\na=ice-pwd:+BOWo0ZqtrGNvmtWWCtHX0QC\r\na=ice-options:renomination\r\na=fingerprint:sha-256 E5:06:2E:37:E8:13:0C:45:B3:AC:28:92:71:5B:60:32:6D:E8:B7:D5:E2:96:B0:E5:17:B6:92:33:6A:1C:DF:8E\r\na=setup:active\r\na=mid:audio\r\na=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:111 opus\/48000\/2\r\na=fmtp:111 minptime=10;useinbandfec=1\r\na=rtpmap:103 ISAC\/16000\r\na=rtpmap:104 ISAC\/32000\r\na=rtpmap:9 G722\/8000\r\na=rtpmap:102 ILBC\/8000\r\na=rtpmap:0 PCMU\/8000\r\na=rtpmap:8 PCMA\/8000\r\na=rtpmap:106 CN\/32000\r\na=rtpmap:105 CN\/16000\r\na=rtpmap:13 CN\/8000\r\na=rtpmap:126 telephone-event\/8000\r\na=ssrc:1892460007 cname:DBqx+KdFlQmMiVm6\r\na=ssrc:1892460007 msid:ARDAMS ARDAMSa0\r\na=ssrc:1892460007 mslabel:ARDAMS\r\na=ssrc:1892460007 label:ARDAMSa0\r\nm=video 9 UDP\/TLS\/RTP\/SAVPF 100 101 116 117 96\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:5EBa\r\na=ice-pwd:+BOWo0ZqtrGNvmtWWCtHX0QC\r\na=ice-options:renomination\r\na=fingerprint:sha-256 E5:06:2E:37:E8:13:0C:45:B3:AC:28:92:71:5B:60:32:6D:E8:B7:D5:E2:96:B0:E5:17:B6:92:33:6A:1C:DF:8E\r\na=setup:active\r\na=mid:video\r\na=extmap:2 urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:3 http:\/\/[www.webrtc.org](http://www.webrtc.org/)\/experiments\/rtp-hdrext\/abs-send-time\r\na=extmap:4 urn:3gpp:video-orientation\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:100 VP8\/90000\r\na=rtcp-fb:100 ccm fir\r\na=rtcp-fb:100 nack\r\na=rtcp-fb:100 nack pli\r\na=rtcp-fb:100 goog-remb\r\na=rtpmap:101 VP9\/90000\r\na=rtcp-fb:101 ccm fir\r\na=rtcp-fb:101 nack\r\na=rtcp-fb:101 nack pli\r\na=rtcp-fb:101 goog-remb\r\na=rtpmap:116 red\/90000\r\na=rtpmap:117 ulpfec\/90000\r\na=rtpmap:96 rtx\/90000\r\na=fmtp:96 apt=100\r\na=ssrc-group:FID 3263650902 1527749129\r\na=ssrc:3263650902 cname:DBqx+KdFlQmMiVm6\r\na=ssrc:3263650902 msid:ARDAMS ARDAMSv0\r\na=ssrc:3263650902 mslabel:ARDAMS\r\na=ssrc:3263650902 label:ARDAMSv0\r\na=ssrc:1527749129 cname:DBqx+KdFlQmMiVm6\r\na=ssrc:1527749129 msid:ARDAMS ARDAMSv0\r\na=ssrc:1527749129 mslabel:ARDAMS\r\na=ssrc:1527749129 label:ARDAMSv0\r\n"}

     {"type":"candidate","label":0,"id":"audio","candidate":"candidate:1300829926 1 udp 2122260223 192.168.153.186 36349 typ host generation 0 ufrag Xe0D network-id 3 network-cost 10"}

二、Web网页版

1.获取网页界面信息

            GET [https://www.skyrtc.info/](https://www.skyrtc.info/) [HTTP/1.1 200 OK 32ms]

            response:网页界面信息html
            GET [https://www.skyrtc.info/css/main.css](https://www.skyrtc.info/css/main.css) [HTTP/1.1 304 Not Modified 23ms]

            main.css中的内容如网页的长宽、颜色等
            GET [https://www.skyrtc.info/callstats/callstats.min.js](https://www.skyrtc.info/callstats/callstats.min.js) [HTTP/1.1 304 Not Modified 44ms]
            GET [https://www.skyrtc.info/callstats/sha.js](https://www.skyrtc.info/callstats/sha.js) [HTTP/1.1 304 Not Modified 65ms]

            sha.js:加密信息
            GET [https://www.skyrtc.info/callstats/socket.io.js](https://www.skyrtc.info/callstats/socket.io.js) [HTTP/1.1 304 Not Modified 65ms]

            socket.io.js:websocket protocol
            GET [https://www.skyrtc.info/js/apprtc.debug.js](https://www.skyrtc.info/js/apprtc.debug.js) [HTTP/1.1 304 Not Modified 70ms]
            GET [https://www.google-analytics.com/analytics.js](https://www.google-analytics.com/analytics.js) [HTTP/2.0 304 Not Modified 62ms]
            GET [https://www.google-analytics.com/r/collect](https://www.google-analytics.com/r/collect) [HTTP/2.0 200 OK 73ms]

2.输入房间号，点击join按钮，加入房间

POST XHR [https://www.skyrtc.info/join/040075152](https://www.skyrtc.info/join/040075152) [HTTP/1.1 200 OK 35ms]

3.连接websocket协议

           GET [https://www.skyrtc.info:4432/ws](https://www.skyrtc.info:4432/ws) [HTTP/1.1 101 Switching Protocols 49ms]

4.给服务器发送sdp和icecandidate信息，房间服务器转将信息转发给信令服务器

           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 44ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 36ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 46ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 51ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 42ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 29ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 30ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 31ms]
           POST XHR [https://www.skyrtc.info/message/040075152/13888651](https://www.skyrtc.info/message/040075152/13888651) [HTTP/1.1 200 OK 32ms]

          response: result SUCCESS

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WebRTC系列（2）：room server,signalin

一、App版本（iOS为例）

单方向连接：

websocket:

加入到同一个房间

二、Web网页版

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