Webcam example without Internet connection

[kueblert]

Hi,
the webcam example does not seem to work when there is no internet connection.
I am accessing the stream via http://127.0.0.1:8080 (0.0.0.0 didn't work for me on Windows),
There seems to be an issue with getting the ice candidates (none are found by the javascript client). The moment I plug in the internet connection, everything works nicely. I am nut using the STUN server.

Any guesses why this might be the case?

Best,
Thomas

[HenryWInfinity]

Have you solved the problem?

[HenryWInfinity]

i met it too.

[kueblert]

Nope. No clue what's wrong with it.
I ended up switching to a gstreamer pipeline that handles the WebRTC. But compared to this library it's quite a messy piece of code that is necessary to call it from python in windows.

[HenryWInfinity]

it still use an online stun server in rtcicetransport.py.
is there a method that i can do webrtc offline without a stun server?

[kueblert]

Removing the default does not have an effect. Still working with internet, not working without.

[filsav]

I have same issue. All works as expected when serving from 127.0.0.1:8000 with internet connection. Without internet connection it got stuck with Peer connection (iceConnectionState) = "checking". Author, please help! How to run aiortc server on localhost while offline?

[jlaine]

What browser are you using?

For the connection to work you're going to need one of the following conditions to be met:

• access to a STUN server
  OR
• a browser with a working mDNS stack. Firefox currently has a bug, see https://bugzilla.mozilla.org/show_bug.cgi?id=1691189

[kueblert]

I have tried with Chrome and Edge.

[nicarl]

I encountered a similar problem with local/offline connections on the same network not getting established.
I was able to solve it by the following things:

• use Chrome (the mentioned Firefox bug seems to be a problem)
• open the peer connection with pc = RTCPeerConnection( configuration=RTCConfiguration(iceServers=[]) )
• the second part of the connection was established using javascript and it was also important to use const pc = new RTCPeerConnection({ iceServers: [] });
• be aware that docker containers run in an isolated network and this can also lead to problems

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