text: #!/usr/bin/env node
  'use_strict'
  
  const dgram = require('dgram')
  const client = dgram.createSocket('udp4')
  
  const message = new Buffer('message sent from client')
  
  client.send(message, 0, message.length, 41234, 'localhost')
  
  client.on('message', (msg, rinfo) => {
    console.log(`client got: '${msg}' (${msg.length} bytes) from ${rinfo.address}:${rinfo.port}`)
    client.close()
  })
  
  client.on('error', (err) => {
    console.log(`client error:\n${err.stack}`)
    client.close()
  })
  