SerialPort TCP/IP Host server

tcpSerialRelay.js

var net = require('net');
var SerialPort = require('serialport').SerialPort;


//possibly something like COM1 on windows
var SERIAL_PORT = process.env.SERIAL_PORT || '/dev/tty.usbmodem1421';

var PORT = process.env.PORT || 3001;

var serialPort = new SerialPort(SERIAL_PORT,{
    baudrate: 57600,
    buffersize: 1
});

var clients = {};

serialPort.on('data', function(data){
  for(var id in clients){
    try{
      clients[id].write(data);
    }catch(exp){
      console.log('error writing to client', id, exp);
    }
  }
});

var server = net.createServer(function(c) {
  c.id = 'c' + Math.random() + '_' + Date.now();
  clients[c.id] = c;
  console.log('client connected', c.id);

  c.on('end', function() {
    console.log('client disconnected', c.id);
    delete clients[c.id];
  });

  c.on('data', function(data){
    serialPort.write(data);
  });

});


server.listen(PORT, function() {
  console.log('server bound to port: ' + PORT);
});