Uncaught TypeError: Cannot read property 'addIceCandidate' of undefined

Question

well I will jump into code part since the header is the problem im facing and I couldnt find any better ways to describe it

function addIceCandidate(message) {
    if (message.candidate != null) {
        console.trace('add ice candidate');
        var iceCandidate = new RTCIceCandidate(message.candidate);
        pc1.addIceCandidate(iceCandidate);
    }    
}

is the function who tries to send ice candidate to the remote peer but in remote peer's chrome debugger it says

Uncaught TypeError: Cannot read property 'addIceCandidate' of undefined and

pc1.addIceCandidate(iceCandidate);

is the line where the error happens

But to my knowladge addIceCandidate is a WebRTC function which is already defined.

so what am I doing wrong?

I have already gone through here , and for similar problems here, here and also here

and also for the full project Gist is here

Ty for helps in advance and please inform me if you need additional infomation

Here issue is not with addIceCandidate but with object pc1, it says pc1 is undefined. check pc1 first. — sandeepKumar, Jun 11 '18 at 06:40
@RaviMariya actually it is defined in call() method but i moved it up to top but does not change the situation — Haydar Kutay Özcan, Jun 11 '18 at 06:44
i got your problem, your pc1 is undefined in remote pc, you need to make sure you have pc1 before calling addIceCandidate in remote pc — Ravi Mariya, Jun 11 '18 at 06:48
@RaviMariya pc1 is not undefined it was defined at method call() but then i moved it on to the top var pc1; var servers = { 'iceServers': [{ 'urls': 'stun:stun.l.google.com:19302' }] }; pc1 = new RTCPeerConnection(servers); here is the definition for you this is not still working — Haydar Kutay Özcan, Jun 11 '18 at 06:53
write `console.log(pc1)` before `pc1.addIceCandidate(iceCandidate);` and see what it prints — Ravi Mariya, Jun 11 '18 at 06:56
@RaviMariya http://tinypic.com/r/2wg99jq/9 you can look at the console log for it from the link — Haydar Kutay Özcan, Jun 11 '18 at 07:10
@HaydarKutayÖzcan I added answer. hope it will help you in understanding the code and work as per your expectation. Thanks. — Debug Diva, Jun 11 '18 at 08:23
@RohitJindal thank you for your help and work but had some questions and asked them in comment . im building up a WebTC application so your answer was quite interesting for me. — Haydar Kutay Özcan, Jun 11 '18 at 08:36
See https://www.w3.org/TR/webrtc/#call-flow-browser-to-browser — Joseph D., Jun 11 '18 at 13:07

score 0 · Answer 1 · answered Jun 11 '18 at 08:22

0

Uncaught TypeError: Cannot read property 'addIceCandidate' of undefined

This line itself having answer of your question. pc1 object is not defined on which you are trying to access addIceCandidate property.

Working code :

var pc1 = {
  addIceCandidate : function(val) {
    console.log(val);
  }
}

function addIceCandidate(message) {
    if (message.candidate != null) {
        pc1.addIceCandidate(message.candidate);
    }    
}

var data = {
  "candidate": "Rohit"
}

addIceCandidate(data);

answered Jun 11 '18 at 08:22

Debug Diva

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may i ask you something? is this code working in the context of WebRTC? if so can you show your search results about it for me to learn more? because pc1 = new RTCPeerConnection(servers); is my definition on my current code and even on MDN it says addIceCandidate is defined in WebRTC so can you give some more details please? – Haydar Kutay Özcan Jun 11 '18 at 08:34
@HaydarKutayÖzcan I dont have an idea of WebRTC. So i can not help you in that. – Debug Diva Jun 11 '18 at 09:50

score 0 · Answer 2 · answered Jun 11 '18 at 12:59

Things to remember:

Once the connection, pc1, receives an ice candidate via onicecandidate() event handler, pc1 should send the ice candidate to the remote peer via the signaling server.
Remote peer should use RTCPeerConnection's addIceCandidate() to add the ice candidate received via the signaling server.

See Simple Peer-to-Peer Example

Uncaught TypeError: Cannot read property 'addIceCandidate' of undefined

2 Answers2