websocket p2p network in nodejs

libp2p_websocket.js

/*
PART OF: https://github.com/st3b1t/libp2p-nodejs-playground

setup:
$ npm install libp2p @chainsafe/libp2p-noise @chainsafe/libp2p-yamux @libp2p/bootstrap @libp2p/mdns @libp2p/websockets 

run:
$ node libp2p_websocket.js <PORT>

open in more terminal with different port
*/
import { createLibp2p } from 'libp2p'
import { webSockets } from '@libp2p/websockets'
import { noise } from '@chainsafe/libp2p-noise'
import { yamux } from '@chainsafe/libp2p-yamux'
//import { bootstrap } from '@libp2p/bootstrap'
import { mdns } from '@libp2p/mdns' //Multicast DNS

//env DEBUG="libp2p:tcp,libp2p:websockets,libp2p:webtransport,libp2p:kad-dht,libp2p:dialer"

const port = Number(process.argv[2]) || 8000;

(async() => {

const node = await createLibp2p({
start: false,
  addresses: {
    listen: [`/ip4/127.0.0.1/tcp/${port}/ws`]
  },
  transports: [
    webSockets()
  ],
  connectionEncryption: [noise()],
  streamMuxers: [yamux()],
  peerDiscovery: [
    mdns()
  ]
});

node.addEventListener('peer:discovery', e => {
  console.log('New peer Discovered', e.detail.id)
})

node.addEventListener('peer:connect', e => {
  console.log('Connected to peer:', e.detail)
})

await node.start()

const listenAddrs = node.getMultiaddrs();
console.log('node listen: ', listenAddrs)


process.on('SIGINT', async () => {
  console.log('node stopping...');
  await node.stop()
  process.exit(0);
});

})();