noise-peer-example

.gitignore

node_modules

README.md

This is an example of noise-peer where the end events are properly handled.

client.js

const net = require('net')
const noisePeer = require('noise-peer')

const socket = new net.Socket()

socket.connect(8124, () => {
  console.log('socket connected')
  const peer = noisePeer(socket, true)

  peer.on('close', () => {
    console.log('noise-peer close')
    clearInterval(pinger)
  })

  peer.on('end', () => {
    console.log('noise-peer end')
    // peer.end(() => console.log('sending end frame'))
  })

  peer.on('error', (err) => {
    console.error('noise-peer errored')
    console.error(err)
  })

  peer.on('timeout', () => {
    console.error('noise-peer timeout')
    peer.end(() => console.error('noise-peer ended after timeout'))
  })

  const pinger = setInterval(() => {
    peer.write(Buffer.from('ping'))
  }, 1000)
  peer.on('data', buf => console.log(buf.toString()))

  process.once('SIGINT', quit)
  process.once('SIGTERM', quit)

  function quit () {
    clearInterval(pinger)
    peer.end(() => {
      console.log('client sent `FINISH` message')
    })
  }
})

package.json

{
  "name": "noise-peer-sanity",
  "version": "0.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "Bret Comnes <bcomnes@gmail.com> (https://bret.io/)",
  "license": "MIT",
  "dependencies": {
    "noise-peer": "^1.1.0",
    "pump": "^3.0.0",
    "streamx": "^2.5.0"
  },
  "devDependencies": {
    "standard": "^14.3.1"
  }
}

server.js

const net = require('net')
const noisePeer = require('noise-peer')
const { Transform } = require('streamx')
const pump = require('pump')

const server = net.createServer((socket) => {
  // 'connection' listener.
  const client = {
    id: Math.random().toString(36).slice(2)
  }
  console.log(`client ${client.id} connected`)

  const peer = noisePeer(socket, false)

  peer.on('end', () => {
    console.log('noise-peer end')
    // peer.end(() => console.log('sending end frame'))
  })

  peer.on('close', () => {
    console.log('noise-peer close')
    process.removeListener('SIGINT', endSession)
    process.removeListener('SIGTERM', endSession)
  })

  peer.on('error', (err) => {
    console.error('noise-peer errored')
    console.error(err)
  })

  peer.on('timeout', () => {
    console.error('noise-peer timeout')
    peer.end(console.error('noise-peer ended after timeout'))
  })

  const upperCaser = new Transform({
    transform (buf, cb) {
      const str = buf.toString()
      console.log(`${client.id}: ${str}`)
      cb(null, str.toUpperCase())
    }
  })

  pump(peer, upperCaser, peer)

  process.once('SIGINT', endSession)
  process.once('SIGTERM', endSession)

  function endSession () {
    console.error(`ending session for ${client.id}:`)
    peer.end(() => console.log(`session for ${client.id} is ended`))
  }
})

server.on('error', (err) => {
  console.error('server error:')
  console.error(err)
})

server.listen(8124, () => {
  console.log('server listening on 8124')
})

process.once('SIGINT', quit)
process.once('SIGTERM', quit)

function quit () {
  console.log('server is shutting down')
  server.close((err) => {
    if (err) throw err
    console.log('server gracefully shutdown')
  })
}