WebRTC onicecandidate事件 [英] WebRTC onicecandidate event

问题描述

我对RTCPeerConnection的onicecandidate事件有以下回调：

I have the following callback for the onicecandidate event of RTCPeerConnection:

function iceCallback(event) {
    if (event.candidate) {
        var candidate = event.candidate;
        socSend("candidate", candidate. event.target.id);
    }
}

我能够从活动中读取候选人。候选人。但是当我尝试读取event.target.id时，我得到一个异常，无法读取未定义的属性目标。

I am able to read the candidate from the event.candidate. But when I try to read the event.target.id, I get an exception, cannot read property target of undefined.

id是我之前为RTCPeerConnection创建的属性。这适用于多用户视频聊天。

"id" is a property I previously created for the RTCPeerConnection. This is for a multiuser video chat.

我试图找出哪个RTCPeerConnection触发了onicecandidate事件，所以我知道我需要向哪个客户端发送icecandidate。我正在使用adapter.js库。

I am trying to figure out which RTCPeerConnection fired the onicecandidate event so I know to which client I need to send the icecandidate. I am using the adapter.js library.

推荐答案

我认为你的代码的某些部分就像下面一样，我只是添加了一个简单的修改：

I assumed that some part of your code would be like below, I have just added a simple modification:

peerConnections ={};

function createNewConncection(id){
    var pc = new RTCPeerConnection();
    pc.onaddstream = ...
    ...

    //pc.onicecandidate = iceCallback;  // OLD CODE
    pc.onicecandidate = iceCallback.bind({pc:pc, id:id});  // NEW CODE
    peerConnections[id] = pc;
}

function iceCallback(event) {
    if (event.candidate) {
        var candidate = event.candidate;
        //socSend("candidate", candidate. event.target.id);     // OLD CODE
        socSend("candidate", this.id);          // NEW CODE
    }
}

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