Tests for WebRTC direct

[seetadev]

@Nkovaturient , @sukhman-sukh: The proposed next steps for testing sound very solid:

1. Browser-to-public peer via webrtc-direct with circuit relay — This will really validate the interoperability of the transport and help us catch any connection-handling edge cases.
2. Loopback test between two local py-peers — Great way to confirm stability in a controlled environment before scaling to more complex scenarios.

For robustness, wish to also suggest:

• Testing with mixed network conditions (high latency, packet loss) to ensure resilience.
• Verifying reconnection logic when a peer temporarily drops.
• Adding logging hooks so we can trace the signaling handshake more easily if issues arise.

It would be great if we could create a minimal reproducible test harness for webrtc-direct in py-libp2p that covers both scenarios you outlined (browser-to-public peer and local loopback).

[seetadev]

CCing @pacrob, @acul71, @Winter-Soren, @AkMo3, @guha-rahul and @lla-dane for their feedback, ideas and pointers.

[acul71]

1. Browser-to-public peer via webrtc-direct with circuit relay — This will really validate the interoperability of the transport and help us catch any connection-handling edge cases.

I imagine the public peer is python, the browser runs javascript ?

[Nkovaturient]

Hey @acul71
The test idea was to have a 'private' python peer dial to public py- peer via webrtc-direct transport and establish p2p conn.

Browsers cannot 'listen' but dial on 'webrtc direct addresses'

Server(py-peer) listens on a public UDP port , embeds its cert hash in maddr, derives client's SDP offer from incoming IP/port of STUN msg sent to a public port  ---->

Client py peer derives the server's sdp ans from maddr, so no SDP handshake via circuit relay

as you mentioned, tht comes under webrtc-transport-interop testing b/w js&py peer.
Looking more into the test specs and interop testing.