我正在使用 RTCPeerConnection 和我自己的长轮询实现在两个浏览器之间试验 WebRTC。我已经创建了演示应用程序,它成功地与 Mozilla Nightly (22) 一起使用,但是在 Chrome (25) 中,我无法获得远程视频,并且只出现“空黑色视频”。我的 JS 代码有问题吗?
函数sendMessage(message)通过长轮询向服务器发送消息,另一方面,使用onMessage()接受
var peerConnection;
var peerConnection_config = {"iceServers": [{"url": "stun:23.21.150.121"}]};
// when message from server is received
function onMessage(evt) {
if (!peerConnection)
call(false);
var signal = JSON.parse(evt);
if (signal.sdp) {
peerConnection.setRemoteDescription(new RTCSessionDescription(signal.sdp));
} else {
peerConnection.addIceCandidate(new RTCIceCandidate(signal.candidate));
}
}
function call(isCaller) {
peerConnection = new RTCPeerConnection(peerConnection_config);
// send any ice candidates to the other peer
peerConnection.onicecandidate = function(evt) {
sendMessage(JSON.stringify({"candidate": evt.candidate}));
};
// once remote stream arrives, show it in the remote video element
peerConnection.onaddstream = function(evt) {
// attach media stream to local video - WebRTC Wrapper
attachMediaStream($("#remote-video").get("0"), evt.stream);
};
// get the local stream, show it in the local video element and send it
getUserMedia({"audio": true, "video": true}, function(stream) {
// attach media stream to local video - WebRTC Wrapper
attachMediaStream($("#local-video").get("0"), stream);
$("#local-video").get(0).muted = true;
peerConnection.addStream(stream);
if (isCaller)
peerConnection.createOffer(gotDescription);
else {
peerConnection.createAnswer(gotDescription);
}
function gotDescription(desc) {
sendMessage(JSON.stringify({"sdp": desc}));
peerConnection.setLocalDescription(desc);
}
}, function() {
});
}