Webrtc setRemoteDescription 不适用于呼叫者

Question

部分代码如下所示：

if (message.type === 'offer') {
    console.log("got offer");
    console.log(message);
    pc.setRemoteDescription(new SessionDescription(message));
    console.log(pc);
    createAnswer();
}
else if (message.type === 'answer') {
    console.log("got answer");
    console.log(message);
    pc.setRemoteDescription(new SessionDescription(message));
    console.log(pc);
}

Calee设置远程描述成功，pc.remoteDescription已填写。但是来电者...收到与被叫者相同的消息，但是在 pc.setRemoteDescription(new SessionDescription(message)); 得到 pc.remoteDescription 空并且注意到发生之后。被叫方准备接收流，但呼叫方卡住了。

Answer 1

我认为问题是因为 setRemoteDescription 失败，或者它与 createAnswer 之间存在竞争条件，因此将其添加到成功回调中，为了清楚起见，还要添加一个错误回调...

类似于：

if (message.type === 'offer') {
    console.log("got offer");
    console.log(message);
    pc.setRemoteDescription(new SessionDescription(message), function(){
        console.log(pc);
        createAnswer();
    }, console.error.bind(console));
}
else if (message.type === 'answer') {
    console.log("got answer");
    console.log(message);
    pc.setRemoteDescription(new SessionDescription(message), console.log.bind(console, 'success'), console.error.bind(console));
}

如果支持 Promise 和 ES6：

if (message.type === 'offer') {
    console.log("got offer");
    console.log(message);
    pc.setRemoteDescription(new SessionDescription(message))
      .then(() =>{
        console.log('success...', pc);
        createAnswer();            
      }).catch(e => console.error(e));
}
else if (message.type === 'answer') {
    console.log("got answer");
    console.log(message);
    pc.setRemoteDescription(new SessionDescription(message))
      .then(() => console.log('success...', pc))
      .catch(e => console.error(e));
}

Webrtc setRemoteDescription 不适用于呼叫者

Webrtc setRemoteDescription don't work for caller

javascript

webrtc