Issue with WebRTC data channels

[Anton Pryima]

Hello Ben.

Which version of Gstreamer are you using? It was an issue with data
channels some time ago.

Best regards,
Anton.

On Sun, Jan 14, 2024 at 1:33 AM Benjamin Greenwood via gstreamer-devel <
gstreamer-devel at lists.freedesktop.org> wrote:

> Hello,
>
> I successfully run and modify to my liking the WebRTC sendrecv example
> here:
>
> https://gitlab.freedesktop.org/gstreamer/gst-examples/-/tree/master/webrtc?ref_type=heads
>
> However, I am having an issue with data channels.
> When I use the webrtc-sendrecv process (unmodified) with the JavaScript
> example, data channels open and the browser and executable talk to each
> other: "Hi! (from Gstreamer)" and "Hi! (from browser)"
>
> However, when I run two webrtc-sendrecv executables, they are able to pass
> media to each other and CREATE data channels, but the data channels never
> OPEN - no on-open signal ever fires and if I try to send a message at any
> point through send_channel, I get "webrtc_data_channel_send_string:
> assertion 'channel->opened' failed".
>
> I would appreciate any advice! I believe the answer must be in the way the
> executable handles negotiation vs. the Javascript example, but I don't know
> how to debug into those issues.
>
>  - Ben
>
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