ping is not responding on local tcp node

[danicuki]

• Version:

    node 16.13
    "@chainsafe/libp2p-noise": "^7.0.1",
    "@libp2p/mplex": "^4.0.0",
    "@libp2p/tcp": "^3.0.1",
    "@libp2p/websockets": "^3.0.0",
    "libp2p": "^0.37.3",
    "multiaddr": "^10.0.1"

• Platform: MacOS

• Subsystem:

Severity:

High - The main functionality of the application does not work, API breakage, repo format breakage, etc.

Description:

I am trying to run the base tutorial ping project. When I try to ping the node, it never returns:

libp2p has started
listening on addresses:
/ip4/127.0.0.1/tcp/63244/p2p/12D3KooWMuhGCu75cebfNE96DLQyAWRcz6aY9dKAWDCRd4GiZM3n
pinging remote peer at /ip4/127.0.0.1/tcp/63177/p2p/12D3KooWDCn4xg5TqtQjTYBvdSK5wKU7EeovnXZ9ZTCEPWT5B9Tc

Steps to reproduce the error:

run the following index.js file

import process from "node:process"
import { createLibp2p } from "libp2p"
import { TCP } from "@libp2p/tcp"
import { Noise } from "@chainsafe/libp2p-noise"
import { Mplex } from "@libp2p/mplex"
import { multiaddr } from "multiaddr"

const main = async () => {
  const node = await createLibp2p({
    addresses: {
      // add a listen address (localhost) to accept TCP connections on a random port
      listen: ["/ip4/127.0.0.1/tcp/0"],
    },
    transports: [new TCP()],
    connectionEncryption: [new Noise()],
    streamMuxers: [new Mplex()],
  })

  // start libp2p
  await node.start()
  console.log("libp2p has started")

  // print out listening addresses
  console.log("listening on addresses:")
  node.getMultiaddrs().forEach((addr) => {
    console.log(addr.toString())
  })

  // ping peer if received multiaddr
  if (process.argv.length >= 3) {
    const ma = multiaddr(process.argv[2])
    console.log(`pinging remote peer at ${process.argv[2]}`)
    const latency = await node.ping(ma)
    console.log(`pinged ${process.argv[2]} in ${latency}ms`)
  } else {
    console.log("no remote peer address given, skipping ping")
  }

  const stop = async () => {
    // stop libp2p
    await node.stop()
    console.log("libp2p has stopped")
    process.exit(0)
  }

  process.on("SIGTERM", stop)
  process.on("SIGINT", stop)
}

main()

Terminal 1:

node src/index.js

output:

libp2p has started
listening on addresses:
/ip4/127.0.0.1/tcp/63177/p2p/12D3KooWDCn4xg5TqtQjTYBvdSK5wKU7EeovnXZ9ZTCEPWT5B9Tc
no remote peer address given, skipping ping

Terminal 2:

node src/index.js /ip4/127.0.0.1/tcp/63177/p2p/12D3KooWDCn4xg5TqtQjTYBvdSK5wKU7EeovnXZ9ZTCEPWT5B9Tc

output (get stuck here):

libp2p has started
listening on addresses:
/ip4/127.0.0.1/tcp/63244/p2p/12D3KooWMuhGCu75cebfNE96DLQyAWRcz6aY9dKAWDCRd4GiZM3n
pinging remote peer at /ip4/127.0.0.1/tcp/63177/p2p/12D3KooWDCn4xg5TqtQjTYBvdSK5wKU7EeovnXZ9ZTCEPWT5B9Tc

[danicuki]

the same code using old version with CommonJS works fine:

  "dependencies": {
    "@libp2p/tcp": "^3.0.1",
    "libp2p": "^0.36.2",
    "libp2p-mplex": "^0.10.7",
    "libp2p-noise": "^4.0.0",
    "multiaddr": "^10.0.1"
  }

import process from "node:process"
import { createLibp2p } from "libp2p"
import { TCP } from "@libp2p/tcp"
import { Noise } from "@chainsafe/libp2p-noise"
import { Mplex } from "@libp2p/mplex"
import { multiaddr } from "multiaddr"

const main = async () => {
  const node = await createLibp2p({
    addresses: {
      // add a listen address (localhost) to accept TCP connections on a random port
      listen: ["/ip4/127.0.0.1/tcp/0"],
    },
    transports: [new TCP()],
    connectionEncryption: [new Noise()],
    streamMuxers: [new Mplex()],
  })

  // start libp2p
  await node.start()
  console.log("libp2p has started")

  // print out listening addresses
  console.log("listening on addresses:")
  node.getMultiaddrs().forEach((addr) => {
    console.log(addr.toString())
  })

  // ping peer if received multiaddr
  if (process.argv.length >= 3) {
    const ma = multiaddr(process.argv[2])
    console.log(`pinging remote peer at ${process.argv[2]}`)
    const latency = await node.ping(ma)
    console.log(`pinged ${process.argv[2]} in ${latency}ms`)
  } else {
    console.log("no remote peer address given, skipping ping")
  }

  const stop = async () => {
    // stop libp2p
    await node.stop()
    console.log("libp2p has stopped")
    process.exit(0)
  }

  process.on("SIGTERM", stop)
  process.on("SIGINT", stop)
}

main()

[mpetrunic]

@calummoore does this still happening with latest version of dependencies?

[danicuki]

in fact, when I changed the lib versions to these bellow, it worked:

  "dependencies": {
    "@chainsafe/libp2p-noise": "^8.0.1",
    "@libp2p/mplex": "^5.1.0",
    "@libp2p/tcp": "^3.0.4",
    "@libp2p/websockets": "^3.0.2",
    "libp2p": "^0.38.0",
    "multiaddr": "^10.0.1"
  }

[danicuki]

I created a PR to the existing docs to explicitly add lib versions: https://github.com/libp2p/docs/pull/173

[mpetrunic]

Closing as it works with latest version of dependencies