mirror of
https://github.com/varun-r-mallya/py-libp2p.git
synced 2025-12-31 20:36:24 +00:00
122 lines
3.7 KiB
Python
122 lines
3.7 KiB
Python
import argparse
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import logging
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import secrets
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import multiaddr
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import trio
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from libp2p import new_host
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from libp2p.abc import PeerInfo
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from libp2p.crypto.secp256k1 import create_new_key_pair
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from libp2p.discovery.events.peerDiscovery import peerDiscovery
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# Configure logging
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logger = logging.getLogger("libp2p.discovery.bootstrap")
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logger.setLevel(logging.INFO)
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handler = logging.StreamHandler()
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handler.setFormatter(
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logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
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)
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logger.addHandler(handler)
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# Set root logger to DEBUG to capture all logs
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logging.getLogger().setLevel(logging.DEBUG)
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def on_peer_discovery(peer_info: PeerInfo) -> None:
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"""Handler for peer discovery events."""
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logger.info(f"🔍 Discovered peer: {peer_info.peer_id}")
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logger.info(f" Addresses: {[str(addr) for addr in peer_info.addrs]}")
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# Example bootstrap peers (you can replace with real bootstrap nodes)
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BOOTSTRAP_PEERS = [
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# IPFS bootstrap nodes (examples - replace with actual working nodes)
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"/ip4/104.131.131.82/tcp/4001/p2p/QmaCpDMGvV2BGHeYERUEnRQAwe3N8SznbYGzPwp8qDrq",
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"/ip6/2604:a880:1:20::203:d001/tcp/4001/p2p/QmSoLPppuBtQSGwKDZT2M73ULpjvfd3aZ6ha4oFGL1KrGM",
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]
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async def run(port: int, bootstrap_addrs: list[str]) -> None:
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"""Run the bootstrap discovery example."""
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# Generate key pair
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secret = secrets.token_bytes(32)
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key_pair = create_new_key_pair(secret)
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# Create listen address
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listen_addr = multiaddr.Multiaddr(f"/ip4/0.0.0.0/tcp/{port}")
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# Register peer discovery handler
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peerDiscovery.register_peer_discovered_handler(on_peer_discovery)
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logger.info("🚀 Starting Bootstrap Discovery Example")
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logger.info(f"📍 Listening on: {listen_addr}")
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logger.info(f"🌐 Bootstrap peers: {len(bootstrap_addrs)}")
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print("\n" + "=" * 60)
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print("Bootstrap Discovery Example")
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print("=" * 60)
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print("This example demonstrates connecting to bootstrap peers.")
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print("Watch the logs for peer discovery events!")
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print("Press Ctrl+C to exit.")
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print("=" * 60)
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# Create and run host with bootstrap discovery
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host = new_host(key_pair=key_pair, bootstrap=bootstrap_addrs)
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try:
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async with host.run(listen_addrs=[listen_addr]):
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# Keep running and log peer discovery events
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await trio.sleep_forever()
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except KeyboardInterrupt:
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logger.info("👋 Shutting down...")
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def main() -> None:
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"""Main entry point."""
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description = """
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Bootstrap Discovery Example for py-libp2p
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This example demonstrates how to use bootstrap peers for peer discovery.
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Bootstrap peers are predefined peers that help new nodes join the network.
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Usage:
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python bootstrap.py -p 8000
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python bootstrap.py -p 8001 --custom-bootstrap \\
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"/ip4/127.0.0.1/tcp/8000/p2p/QmYourPeerID"
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"""
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parser = argparse.ArgumentParser(
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description=description, formatter_class=argparse.RawDescriptionHelpFormatter
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)
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parser.add_argument(
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"-p", "--port", default=0, type=int, help="Port to listen on (default: random)"
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)
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parser.add_argument(
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"--custom-bootstrap",
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nargs="*",
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help="Custom bootstrap addresses (space-separated)",
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)
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parser.add_argument(
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"-v", "--verbose", action="store_true", help="Enable verbose output"
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)
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args = parser.parse_args()
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if args.verbose:
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logger.setLevel(logging.DEBUG)
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# Use custom bootstrap addresses if provided, otherwise use defaults
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bootstrap_addrs = (
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args.custom_bootstrap if args.custom_bootstrap else BOOTSTRAP_PEERS
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)
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try:
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trio.run(run, args.port, bootstrap_addrs)
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except KeyboardInterrupt:
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logger.info("Exiting...")
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if __name__ == "__main__":
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main()
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