WHIP based webrtcsink custom signaller example

This repo generates an executable which instantiates a gStreamer pipeline which sends to a WHIP endpoint using the webrtcsink plugin.

Forked from: https://github.com/centricular/webrtcsink-custom-signaller

This is a simple example to demonstrate how to use webrtcsink with a custom signaller implementation.

Run with:

WHIPURL=http://192.168.86.3:7080/whip/endpoint/foo cargo run

If you have a valid WHIP endpoint at WHIPURL, you that endpoint will receive a video stream of the videotestsrc bouncing ball test pattern.

Some notes:

• This repo does NOT generate a gStreamer plugin that allows WHIP to be used with webrtcsink, but an executable.
• This has been tested with Janus and Janus' simple-whip-server and the videoroom plugin, and does work in this scenarion.
• This uses a timer to collect ICE candidates, form a full SDP, and does not use the WHIP PATCH HTTP request to send candidates one at a time.
• This is an early nascent proof of concept of combining WHIP webrtcsink, and probably could use some tweaks for production environments.
• The HTTP DELETE request under WHIP may need some work.

You can see more output when you run like:

GST_DEBUG=webrtcsink:4 RUST_BACKTRACE=1 WHIPURL=http://192.168.86.3:7080/whip/endpoint/foo cargo run