blynk-tools/lib/gw/tcp.js

Tools for working with Blynk IoT Platform

/**
 * Copyright 2017 Volodymyr Shymanskyy
 **/

'use strict';

const net = require('net')

const debug = require('debug')('TCP')

function TcpClient (opts) {
  var host = opts.hostname || opts.host || 'localhost'
  var port = opts.port || 8442

  var client = net.createConnection(port, host)
  client.on('connect', (e) => {
    if (e) { debug(e); return }
    client.setNoDelay(true)
    client.syn_endpoint = "tcp:" + client.remoteAddress + ":" + client.remotePort
    client.syn_direction = "out"
    client.emit('started', client)
  })
  return client
}

function TcpServer (opts) {
  var host = opts.hostname || opts.host || '0.0.0.0'
  var port = opts.port || 8442

  var server = net.createServer()
  server.listen(port, host, () => {
    debug("server listening on", server.address());
  })

  server.on("connection", (client) => {
    client.setNoDelay(true)
    client.syn_endpoint = "tcp:" + client.remoteAddress + ":" + client.remotePort
    client.syn_direction = "in"
    server.emit('started', client)
  })
  return server
}

module.exports = { TcpClient, TcpServer }