我的简单WebRTC JavaScript代码不能按预期工作。事实上,音频通话无法建立(请注意,我对WebRTC的了解很少,我是通过在互联网上查看示例创建的)。该页面应在两个参与者之间启动音频通话。作为参与者之间的信令服务器,我使用了一个websocket服务器。该服务器仅在参与者之间中继消息。在呼叫初始化期间,消息确实通过websocket发送(一个offer,几个候选者,一个答案和其他候选者)。
尽管如此,Firefox给我“ICE失败,请参阅:webrtc获取更多详细信息”。两个参与者都在普通路由器后面。
我会尽快添加我的websocket服务器日志和about:webrtc的示例(当然是缩短版)。
尽管如此,Firefox给我“ICE失败,请参阅:webrtc获取更多详细信息”。两个参与者都在普通路由器后面。
我会尽快添加我的websocket服务器日志和about:webrtc的示例(当然是缩短版)。
为什么这段代码不起作用?我忽略了什么?
我的代码是(请记住,这只适用于Firefox):
ws = new WebSocket("ws://" + location.hostname + ":9000");
navigator.getUserMedia = function(a, b){ return navigator.mozGetUserMedia(a, b, error);};
offerOptions = {offerToRecieveAudio: 1, offerToRecieveVideo: 1};
var pc = new RTCPeerConnection({"iceServers": [
{url:'stun:stun.l.google.com:19302'},
{url:'stun:stunserver.org'},
]});
pc.onaddstream = function(obj) {
if (obj.stream instanceof LocalMediaStream) return;
var audio = document.createElement("audio");
audio.controls = "true";
audio.autoplay = "true";
document.body.appendChild(audio);
audio.srcObject = obj.stream;
}
pc.onicecandidate = function(evt){
if (!evt.candidate) return;
console.log(evt.candidate);
ws.send(JSON.stringify(evt.candidate));
}
// Helper functions
function endCall() {
var audios = document.getElementsByTagName("audio");
for (var i = 0; i < audios.length; i++) {
audios[i].pause();
}
pc.close();
}
function error(err) {
endCall();
}
function startCall(){
navigator.getUserMedia({audio: true}, function(stream) {
pc.onaddstream({stream: stream});
pc.addStream(stream);
pc.createOffer(function(offer) {
pc.setLocalDescription(new RTCSessionDescription(offer),function() {
ws.send(JSON.stringify(offer));
}, error, offerOptions);
}, error);
});
}
ws.onmessage = function(message){
var m = JSON.parse(message.data);
console.log(m);
if (m.type){
if (m.type == "offer"){
navigator.getUserMedia({audio: true}, function(stream) {
pc.onaddstream({stream: stream});
pc.addStream(stream);
pc.setRemoteDescription(new RTCSessionDescription(m), function() {
pc.createAnswer(function(answer) {
pc.setLocalDescription(new RTCSessionDescription(answer), function() {
ws.send(JSON.stringify(answer));
}, error);
}, error, offerOptions);
}, error);
});
}
if (m.type == "answer"){
pc.setRemoteDescription(new RTCSessionDescription(m), function() { }, error);
}
}
if (m.candidate){
pc.addIceCandidate(new RTCIceCandidate(m));
}
};
要发起通话,您只需调用正确命名的startCall()
函数。
两个人之间的websocket通信(去除了IP):
Client connecting: tcp:ip1:62322
Client connecting: tcp:ip2:50075
Text message received: {"type":"offer","sdp":"v=0\r\no=mozilla...THIS_IS_SDPARTA-45.0.2 8467526262723029465 0 IN IP4 0.0.0.0\r\ns=-\r\nt=0 0\r\na=fingerprint:sha-256 8E:FC:F3:42:12:68:95:13:98:CC:B0:8D:41:F6:4E:39:19:60:70:5A:4B:4A:9D:93:4C:A0:53:CF:58:AB:3F:A1\r\na=ice-options:trickle\r\na=msid-semantic:WMS *\r\nm=audio 9 UDP/TLS/RTP/SAVPF 109 9 0 8\r\nc=IN IP4 0.0.0.0\r\na=sendrecv\r\na=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\na=ice-pwd:0a7123357b97345c6f9a9474aabf0c27\r\na=ice-ufrag:5d02cec2\r\na=mid:sdparta_0\r\na=msid:{512da0cd-689a-4981-9d88-9e857ba62803} {f7e81293-42b4-44e1-9d5b-80afe2857cf8}\r\na=rtcp-mux\r\na=rtpmap:109 opus/48000/2\r\na=rtpmap:9 G722/8000/1\r\na=rtpmap:0 PCMU/8000\r\na=rtpmap:8 PCMA/8000\r\na=setup:actpass\r\na=ssrc:2285633480 cname:{90d0392b-c8f1-4be9-af57-8c34d08567cd}\r\n"}
Text message received: {"candidate":"candidate:0 1 UDP 2122187007 localip2 51858 typ host","sdpMid":"sdparta_0","sdpMLineIndex":0}
Text message received: {"candidate":"candidate:7 1 UDP 2122252543 ipv6-2 51859 typ host","sdpMid":"sdparta_0","sdpMLineIndex":0}
Text message received: {"candidate":"candidate:0 2 UDP 2122187006 ip2 51860 typ host","sdpMid":"sdparta_0","sdpMLineIndex":0}
Text message received: {"candidate":"candidate:7 2 UDP 2122252542 ipv6-2 52724 typ host","sdpMid":"sdparta_0","sdpMLineIndex":0}
Text message received: {"candidate":"candidate:2 1 UDP 1685987327 ip2 51858 typ srflx raddr localip2 rport 51858","sdpMid":"sdparta_0","sdpMLineIndex":0}
Text message received: {"candidate":"candidate:2 2 UDP 1685987326 ip2 51860 typ srflx raddr localip2 rport 51860","sdpMid":"sdparta_0","sdpMLineIndex":0}
Text message received: {"type":"answer","sdp":"v=0\r\no=mozilla...THIS_IS_SDPARTA-45.0.2 1868980908691513816 0 IN IP4 0.0.0.0\r\ns=-\r\nt=0 0\r\na=fingerprint:sha-256 04:2A:EB:AD:90:95:A3:A8:B8:3A:76:FE:3A:E7:DA:1F:D6:77:30:8A:87:BB:B9:3A:30:B4:9B:3D:E5:8F:58:04\r\na=ice-options:trickle\r\na=msid-semantic:WMS *\r\nm=audio 9 UDP/TLS/RTP/SAVPF 109\r\nc=IN IP4 0.0.0.0\r\na=sendrecv\r\na=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\na=ice-pwd:b5665ac44d79e66c392408e08bdc32ee\r\na=ice-ufrag:1a8f59a4\r\na=mid:sdparta_0\r\na=msid:{358aa02b-b035-41a8-acf6-2b787a192c60} {28e8765a-4a56-42e3-8f45-897ca7c99c05}\r\na=rtcp-mux\r\na=rtpmap:109 opus/48000/2\r\na=setup:active\r\na=ssrc:3277858225 cname:{8cee2fed-1a9e-46b9-90d7-3cad80050f3b}\r\n"}
Text message received: {"candidate":"candidate:0 1 UDP 2122252543 localip1 59706 typ host","sdpMid":"sdparta_0","sdpMLineIndex":0}
Text message received: {"candidate":"candidate:1 1 UDP 1686052863 ip1 59706 typ srflx raddr localip1 rport 59706","sdpMid":"sdparta_0","sdpMLineIndex":0}
DOMException: [InvalidStateError: Cannot add ICE candidate in state stable, code: 11, nsresult: 0x8053000b]
- Siracoffer
生成答案和设置描述之前,我一直尝试着使用addIceCandidate
。这是一个漫长的教训,让我明白了ICE/信令/对等连接需要被认真处理。 - Neinoffer
,将其设置为B的remoteDescription
,现在创建answer
并将其设置为B的localDescription
,将B的localD
发送给A并将其设置为A的remoteDescription
。这可能对你们所有人来说很明显,但是如果没有这些知识,我会感到困惑。offer
具有A的所有可用编解码器等信息。在接收到此信息后,B会遍历列表并通过其answer
生成兼容列表。在双方设置了这些描述之后,执行addIceCandidates,派对开始了。 - NeinsetLocalDescription
成功回调之后,期望pc.onicecandidate
立即开始触发。例如,您希望在信令通道上看到*offer, candidate, candidate, candidate...*,对于回答也是如此。 - jib