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https://github.com/varun-r-mallya/py-libp2p.git
synced 2025-12-31 20:36:24 +00:00
83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
import secrets
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import multiaddr
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import trio
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from libp2p import (
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new_host,
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)
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from libp2p.crypto.secp256k1 import (
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create_new_key_pair,
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)
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from libp2p.peer.peerinfo import (
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info_from_p2p_addr,
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)
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from libp2p.security.noise.transport import PROTOCOL_ID as NOISE_PROTOCOL_ID
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from libp2p.security.noise.transport import Transport as NoiseTransport
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from libp2p.stream_muxer.mplex.mplex import (
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MPLEX_PROTOCOL_ID,
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)
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async def main():
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# Create a key pair for the host
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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 a Noise security transport
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noise_transport = NoiseTransport(
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# local_key_pair: The key pair used for libp2p identity and authentication
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libp2p_keypair=key_pair,
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# noise_privkey: The private key used for Noise protocol encryption
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noise_privkey=key_pair.private_key,
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# early_data: Optional data to send during the handshake
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# (None means no early data)
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early_data=None,
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# with_noise_pipes: Whether to use Noise pipes for additional security features
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with_noise_pipes=False,
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)
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# Create a security options dictionary mapping protocol ID to transport
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security_options = {NOISE_PROTOCOL_ID: noise_transport}
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# Create a muxer options dictionary mapping protocol ID to muxer class
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# We don't need to instantiate the muxer here, the host will do that for us
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muxer_options = {MPLEX_PROTOCOL_ID: None}
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# Create a host with the key pair, Noise security, and mplex multiplexer
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host = new_host(
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key_pair=key_pair, sec_opt=security_options, muxer_opt=muxer_options
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)
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# Configure the listening address
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port = 8000
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listen_addr = multiaddr.Multiaddr(f"/ip4/0.0.0.0/tcp/{port}")
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# Start the host
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async with host.run(listen_addrs=[listen_addr]):
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print("libp2p has started")
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print("libp2p is listening on:", host.get_addrs())
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# Connect to bootstrap peers manually
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bootstrap_list = [
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"/dnsaddr/bootstrap.libp2p.io/p2p/"
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+ "QmbLHAnMoJPWSCR5Zhtx6BHJX9KiKNN6tpvbUcqanj75Nb",
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"/dnsaddr/bootstrap.libp2p.io/p2p/"
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+ "QmNnooDu7bfjPFoTZYxMNLWUQJyrVwtbZg5gBMjTezGAJN",
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]
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for addr in bootstrap_list:
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try:
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peer_info = info_from_p2p_addr(multiaddr.Multiaddr(addr))
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await host.connect(peer_info)
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print(f"Connected to {peer_info.peer_id.to_string()}")
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except Exception as e:
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print(f"Failed to connect to {addr}: {e}")
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# Keep the host running
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await trio.sleep_forever()
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# Run the async function
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trio.run(main)
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