InvalidStateError: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': The RTCPeerConnection's signalingState is 'closed'

[kevzettler]

This throws when trying to execute:

      import wrtc from 'wrtc';

      const peer = new SimplePeer({
        wrtc,
        initiator:false,
        trickle:true,
        channelConfig:{
          ordered:false,
          maxRetransmits:0
        },
        config:{
          "iceServers":[{"url":"stun:0.0.0.0:3478"},{"url":"turn:0.0.0.0:3478"}]}
      });
      peer.signal(signalPayload);

Where signalPayload is

   { type: 'offer',
     sdp: 'v=0\r\no=- 4801352722661527119 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE data\r\na=msid-semantic: WMS\r\nm=application 9 DTLS/SCTP 5000\r\nc=IN IP4 0.0.0.0\r\na=ice-ufrag:u6RV\r\na=ice-pwd:KW0TbJYgnCbEx7W8NETh0DKG\r\na=ice-options:trickle\r\na=fingerprint:sha-256 5C:DB:0B:72:03:09:03:6F:EF:17:4C:25:A5:96:9E:0E:91:85:BB:43:80:A6:12:1C:F5:52:95:ED:7F:4E:15:82\r\na=setup:actpass\r\na=mid:data\r\na=sctpmap:5000 webrtc-datachannel 1024\r\n' } }

{ Error: Error: InvalidStateError: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': The RTCPeerConnection's signalingState is 'closed'.
    at makeError (/Users/kev/code/crashgiants/node_modules/simple-peer/index.js:1037:13)
    at /Users/kev/code/crashgiants/node_modules/simple-peer/index.js:217:44
    at <anonymous>
    at runMicrotasksCallback (internal/process/next_tick.js:121:5)
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickCallback (internal/process/next_tick.js:180:9) code: 'ERR_SET_REMOTE_DESCRIPTION' }

Not sure if this is a simple-peer config issue or if this is an issue int he Node.js wrtc module.

[t-mullen]

Looks like the peer has been destroyed before you call signal(). Any other errors emitted by the 'error' event?

      import wrtc from 'wrtc';

      const peer = new SimplePeer({
        wrtc,
        initiator:false,
        trickle:true,
        channelConfig:{
          ordered:false,
          maxRetransmits:0
        },
        config:{
          "iceServers":[{"url":"stun:0.0.0.0:3478"},{"url":"turn:0.0.0.0:3478"}]}
      });
      peer.on('error', err => console.error(err)) // <--- 
      peer.signal(signalPayload);

[kevzettler]

peer.on('error', err => console.error(err)) // <---

Only gets called with the aforementioned

Error: Error: InvalidStateError: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': The RTCPeerConnection's signalingState is...

[kevzettler]

$ yarn list simple-peer wrtc
yarn list v1.4.0
warning Filtering by arguments is deprecated. Please use the pattern option instead.
├─ simple-peer@9.2.1
└─ wrtc@0.3.5
✨  Done in 1.26s.
$ node -v; npm -v
v8.4.0
6.4.1

[markandrus]

Looks like you are passing the old, nonstandard url property instead of urls. Support for url was removed in wrtc@0.1.0. Perhaps this is the reason: the RTCPeerConnection constructor throws and simple-peer closes.

[kevzettler]

@markandrus are you talking about the url in the iceServers array?

"iceServers":[{"url":"stun:0.0.0.0:3478"},{"url":"turn:0.0.0.0:3478"}]}

I don't see any other url reference here?

[nazar-pc]

@kevzettler yes, it should be urls: https://developer.mozilla.org/en-US/docs/Web/API/RTCIceServer

[kevzettler]

@nazar-pc @markandrus Thank you! That was the issue. Was using url because this is an old project I'm now upgrading dependencies on.

Closing issue. Not sure if there is any action item from simple peer but maybe feel free to add a guard, it would have helped me.

[AkashAsthana]

Looks like you are passing the old, nonstandard url property instead of urls. Support for url was removed in wrtc@0.1.0. Perhaps this is the reason: the RTCPeerConnection constructor throws and simple-peer closes.

Thanks for that. I was figuring out the error for so long!!! What a relief.