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feat(webrtc): add webrtc example + register webrtc-direct in transport-registry, fix attr-defined typecheck err in basic-host
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‎examples/webrtc/__init__.py‎

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"""WebRTC transport examples for py-libp2p."""

‎examples/webrtc/test_webrtc_transport.py‎

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#!/usr/bin/env python3
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"""
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Simple test script to verify WebRTC transport functionality.
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This tests both WebRTC-Direct and WebRTC (private-to-private) transports.
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"""
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import logging
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from pathlib import Path
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import sys
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# Add the libp2p directory to the path so we can import it
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sys.path.insert(0, str(Path(__file__).parent.parent.parent))
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import pytest
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from multiaddr import Multiaddr
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import trio
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from libp2p import new_host
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from libp2p.crypto.ed25519 import create_new_key_pair
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from libp2p.host.basic_host import BasicHost
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from libp2p.transport.transport_registry import get_transport_registry
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# Import WebRTC protocols to trigger registration
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from libp2p.transport.webrtc import multiaddr_protocols # noqa: F401
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from libp2p.transport.webrtc.private_to_private.transport import WebRTCTransport
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from libp2p.transport.webrtc.private_to_public.transport import (
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WebRTCDirectTransport,
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)
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# Set up logging
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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@pytest.mark.trio
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async def test_webrtc_direct_transport():
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"""Test basic WebRTC-Direct transport functionality."""
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print("🧪 Testing WebRTC-Direct Transport Functionality")
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print("=" * 50)
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try:
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# Create host
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key_pair = create_new_key_pair()
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host = new_host(
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key_pair=key_pair,
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listen_addrs=[Multiaddr("/ip4/127.0.0.1/tcp/0")],
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)
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# Create WebRTC-Direct transport
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webrtc_transport = WebRTCDirectTransport()
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webrtc_transport.set_host(host)
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if isinstance(host, BasicHost):
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host.transport_manager.register_transport("webrtc-direct", webrtc_transport)
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print(f"✅ WebRTC-Direct transport created: {type(webrtc_transport).__name__}")
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test_peer_id = host.get_id()
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test_maddr = Multiaddr(
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f"/ip4/127.0.0.1/udp/9000/webrtc-direct/p2p/{test_peer_id}"
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)
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can_handle = webrtc_transport.can_handle(test_maddr)
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print(f"✅ Can handle WebRTC-Direct multiaddr: {can_handle}")
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# Test creating listener
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async def test_handler(conn):
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print(f"✅ Connection handler called with: {type(conn).__name__}")
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await conn.close()
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async with host.run([Multiaddr("/ip4/127.0.0.1/tcp/0")]):
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async with trio.open_nursery() as nursery:
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await webrtc_transport.start(nursery)
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listener = webrtc_transport.create_listener()
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print(f"✅ WebRTC-Direct listener created: {type(listener).__name__}")
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# Test that the transport can be used
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print(
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f"✅ WebRTC-Direct transport supports dialing: "
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f"{hasattr(webrtc_transport, 'dial')}"
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)
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print(
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f"✅ WebRTC-Direct transport supports listening: "
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f"{hasattr(webrtc_transport, 'create_listener')}"
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)
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await webrtc_transport.stop()
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print("\n🎯 WebRTC-Direct Transport Test Results:")
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print("✅ Transport creation: PASS")
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print("✅ Multiaddr parsing: PASS")
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print("✅ Listener creation: PASS")
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print("✅ Interface compliance: PASS")
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except Exception as e:
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print(f"❌ WebRTC-Direct transport test failed: {e}")
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import traceback
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traceback.print_exc()
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return False
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return True
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@pytest.mark.trio
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async def test_webrtc_transport():
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"""Test basic WebRTC (private-to-private) transport functionality."""
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print("\n🧪 Testing WebRTC Transport Functionality")
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print("=" * 50)
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try:
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# Create host
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key_pair = create_new_key_pair()
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host = new_host(
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key_pair=key_pair,
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listen_addrs=[Multiaddr("/ip4/127.0.0.1/tcp/0")],
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)
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# Create WebRTC transport
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webrtc_transport = WebRTCTransport({})
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webrtc_transport.set_host(host)
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print(f"✅ WebRTC transport created: {type(webrtc_transport).__name__}")
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test_peer_id = host.get_id()
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test_maddr = Multiaddr(f"/p2p-circuit/webrtc/p2p/{test_peer_id}")
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can_handle = webrtc_transport.can_handle(test_maddr)
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print(f"✅ Can handle WebRTC multiaddr: {can_handle}")
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# Test creating listener
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async def test_handler(conn):
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print(f"✅ Connection handler called with: {type(conn).__name__}")
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await conn.close()
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# Test basic functionality without starting transport
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listener = webrtc_transport.create_listener(test_handler)
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print(f"✅ WebRTC listener created: {type(listener).__name__}")
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# Test that the transport can be used
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print(
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f"✅ WebRTC transport supports dialing: {hasattr(webrtc_transport, 'dial')}"
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)
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print(
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f"✅ WebRTC transport supports listening: "
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f"{hasattr(webrtc_transport, 'create_listener')}"
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)
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print("\n🎯 WebRTC Transport Test Results:")
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print("✅ Transport creation: PASS")
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print("✅ Multiaddr parsing: PASS")
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print("✅ Listener creation: PASS")
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print("✅ Interface compliance: PASS")
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except Exception as e:
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print(f"❌ WebRTC transport test failed: {e}")
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import traceback
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traceback.print_exc()
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return False
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return True
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@pytest.mark.trio
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async def test_transport_registry():
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"""Test the transport registry functionality."""
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print("\n🔧 Testing Transport Registry")
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print("=" * 30)
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registry = get_transport_registry()
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# Test getting WebRTC transports
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webrtc_direct_class = registry.get_transport("webrtc-direct")
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webrtc_class = registry.get_transport("webrtc")
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if webrtc_direct_class:
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print(f"✅ webrtc-direct: {webrtc_direct_class.__name__}")
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else:
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print("ℹ️ webrtc-direct: Not in registry (must be registered manually)")
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if webrtc_class:
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print(f"✅ webrtc: {webrtc_class.__name__}")
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else:
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print("❌ webrtc: Not found in registry")
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async def main():
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"""Run all tests."""
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print("🚀 WebRTC Transport Integration Test Suite")
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print("=" * 60)
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print()
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# Run tests
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success_direct = await test_webrtc_direct_transport()
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success_webrtc = await test_webrtc_transport()
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await test_transport_registry()
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print("\n" + "=" * 60)
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if success_direct and success_webrtc:
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print("🎉 All tests passed! WebRTC transports are working correctly.")
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else:
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print("❌ Some tests failed. Check the output above for details.")
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print("\n🚀 WebRTC transports are ready for use in py-libp2p!")
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if __name__ == "__main__":
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try:
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trio.run(main)
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except KeyboardInterrupt:
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print("\n👋 Test interrupted by user")
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except Exception as e:
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print(f"\n❌ Test failed with error: {e}")
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import traceback
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traceback.print_exc()

‎libp2p/host/basic_host.py‎

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@@ -237,7 +237,7 @@ def __init__(
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self.get_peerstore().set_local_record(envelope)
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# Install transport manager and expose it on the underlying network.
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self.transport_manager = TransportManager(self, self._network)
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self.transport_manager = TransportManager(self, self._network) # type: ignore[attr-defined]
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setattr(self._network, "transport_manager", self.transport_manager)
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base_transport = getattr(self._network, "transport", None)
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if isinstance(base_transport, ITransport):

‎libp2p/transport/transport_registry.py‎

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@@ -43,6 +43,14 @@ def _get_webrtc_transport() -> Any:
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return WebRTCTransport
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def _get_webrtc_direct_transport() -> Any:
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from libp2p.transport.webrtc.private_to_public.transport import (
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WebRTCDirectTransport,
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)
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return WebRTCDirectTransport
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logger = logging.getLogger("libp2p.transport.registry")
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except (ImportError, KeyError, TypeError) as e:
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logger.debug("WebRTC transport not available (optional dependency): %s", e)
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# Register WebRTC-Direct transport for /webrtc-direct protocol
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try:
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WebRTCDirectTransport = _get_webrtc_direct_transport()
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self.register_transport("webrtc-direct", WebRTCDirectTransport)
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except (ImportError, KeyError, TypeError) as e:
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logger.debug(
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"WebRTC-Direct transport not available (optional dependency): %s", e
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)
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def register_transport(
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self, protocol: str, transport_class: type[ITransport]
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) -> None:
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transport_class,
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)
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return transport_ctor()
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elif protocol == "webrtc-direct":
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# WebRTC-Direct transport doesn't require config
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transport_ctor = cast(Any, transport_class)
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return transport_ctor()
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else:
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# TCP transport doesn't require upgrader
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return transport_class()
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return registry.create_transport("wss", upgrader, **kwargs)
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else:
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return registry.create_transport("ws", upgrader, **kwargs)
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elif "webrtc-direct" in protocols:
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# For WebRTC-Direct, we need a valid structure like:
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# /ip4/127.0.0.1/udp/0/webrtc-direct/certhash/.../p2p/PEER_ID
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# Check if the multiaddr has proper WebRTC-Direct structure
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if _is_valid_webrtc_multiaddr(maddr):
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registry = get_transport_registry()
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# WebRTC-Direct transport doesn't require upgrader
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return registry.create_transport("webrtc-direct", upgrader, **kwargs)
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elif "webrtc" in protocols:
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# For WebRTC, we need a valid structure like:
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# /ip4/127.0.0.1/tcp/8080/ws/p2p/RELAY_ID/p2p-circuit/webrtc/p2p/TARGET_ID
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# or /ip4/127.0.0.1/udp/0/webrtc-direct/certhash/.../p2p/PEER_ID
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# Check if the multiaddr has proper WebRTC structure
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if _is_valid_webrtc_multiaddr(maddr):
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registry = get_transport_registry()

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