我正在尝试使用 webrtc 和 RTCPeerConnection API 构建一对一视频聊天。我的代码的一个问题是,在初始用户连接到服务器后,当其他用户通过 socket.io 发出消息时,它不会从服务器接收消息。客户端仅接收自己发出的消息。这是我的一些代码。完整的项目位于 Github 上:https://github.com/rashadrussell/webrtc_experiment
客户端
var isInitiator = false;
socket.on('initiatorFound', function(data) {
isInitiator = data.setInitiator;
console.log("Is Initiator? " + isInitiator);
});
navigator.getMedia = (
navigator.getUserMedia ||
navigator.webkitGetUserMedia ||
navigator.mozGetUserMedia ||
navigator.msGetUserMedia
);
navigator.getMedia(
{video: true, audio: false},
function(stream) {
var video = document.getElementById("localView");
video.src = window.URL.createObjectURL(stream);
console.log("Add Stream");
sendMessage('streamAdd', {streamAdded: 'stream-added'});
createPeerConnection();
pc.addStream(stream);
if(isInitiator)
{
callPeer();
}
},
function(err) {
console.log("The following error occured: ");
console.dir(err);
}
);
function sendMessage(type, message)
{
console.log("Sending Message");
socket.emit('message',{
"type": type,
"message": message
});
}
function createPeerConnection() {
pc = new rtcPeerConnection(servers, options);
console.dir(pc);
pc.onicecandidate = function(evt) {
if(evt.candidate == null) return;
pc.onicecandidate = null;
console.log("Send Ice Candidate");
sendMessage("iceCandidate", JSON.stringify(evt.candidate));
};
pc.onaddstream = function(evt) {
document.body.append("<video id='remoteVideo' autoplay></video>");
var remoteVid = document.getElementById("remoteVideo");
remoteVid.src = window.URL.createObjectURL(evt.stream);
};
}
function callPeer() {
pc.createOffer(function (offer) {
pc.setLocalDescription(offer, function() {
sendMessage("offer", JSON.stringify(offer));
});
console.log("Send Offer");
}, function(err) { console.log("Offer Error: " + err) },
videoConstraints
);
}
function answerPeer() {
pc.createAnswer(function(answer) {
pc.setLocalDescription(answer);
sendMessage("answer", JSON.stringify(answer))
}, function(err) { console.log("Sending Answer Error: " + err) },
videoConstraints
);
}
socket.on('message', function(message) {
console.log("CONSOLE MESSAGE:");
console.dir(message);
if(message.type == 'streamAdd') {
console.log('Stream was added');
createPeerConnection();
if(isInitiator) {
callPeer();
}
} else if(message.type == 'offer') {
pc.setRemoteDescription( new rtcSessionDescription(JSON.parse(message.message)));
if(!isInitiator)
{
console.log("Sending Answer");
answerPeer();
}
} else if(message.type == 'answer') {
pc.setRemoteDescription( new rtcSessionDescription(JSON.parse(message.message)));
} else if(message.type == 'iceCandidate') {
console.log("Get Ice Candidate");
pc.addIceCandidate(new rtcIceCandidate(JSON.parse(message.message)) );
}
});
服务器端
var isInitiator = false;
io.sockets.on('connection', function(socket) {
if (!isInitiator) {
isInitiator = true;
socket.emit('initiatorFound', {setInitiator: isInitiator});
} else {
socket.emit('initiatorFound', {setInitiator: !isInitiator});
}
// Signaling Channel
socket.on('message', function(message) {
if (message.type == 'streamAdd') {
console.log('Got message: ' + message);
}
//socket.emit('message' ,message);
// Should be:
socket.broadcast.emit('message', message);
});
});
最佳答案
看看您是否想向您设置唯一ID(socket.id)的特定用户发送消息,但现在您正在尝试测试正确性,因此更改您的服务器端代码
var isInitiator = false;
io.sockets.on('connection', function(socket) {
if (!isInitiator) {
isInitiator = true;
socket.emit('initiatorFound', {setInitiator: isInitiator});
} else {
socket.emit('initiatorFound', {setInitiator: !isInitiator});
}
// Signaling Channel
socket.on('message', function(message) {
if (message.type == 'streamAdd') {
console.log('Got message: ' + message);
}
socket.emit('message' ,message);
});
});
看这里socket.emit('message',message);这个套接字对象包含您的ID,因此如果您想向您知道唯一的特定用户发送消息,它会向您发送消息。ID 以任何方式向每个连接发送消息,期望该套接字(意味着当前套接字)
io.sockets.on('connection', function(socket) {
if (!isInitiator) {
isInitiator = true;
socket.emit('initiatorFound', {setInitiator: isInitiator});
} else {
socket.emit('initiatorFound', {setInitiator: !isInitiator});
}
// Signaling Channel
socket.on('message', function(message) {
if (message.type == 'streamAdd') {
console.log('Got message: ' + message);
}
socket.broadcast.emit('message' ,message);
});
});
关于javascript - WebRTC视频聊天,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22622478/