TCP Server by NodeJS

tcp_server.js

// 參考資料：
//   trim: http://stackoverflow.com/questions/1418050/string-strip-for-javascript
//   tcp server: http://www.giantflyingsaucer.com/blog/?p=952
//   http://nodejs.org/api/net.html#net_socket_remoteaddress

if (typeof(String.prototype.trim) === "undefined") {
  String.prototype.trim = function(){
    return String(this).replace(/\r+|\n+|\s+|\s+$/g, '');
  };
};

var net = require('net'), sys = require('util');
var server = net.createServer(function(stream){
  stream.setEncoding("utf8");

  stream.on('connect', function(){
    stream.write("Hello\n\0");
    sys.puts("Remote: "+stream.remoteAddress+" connected!");
    sys.puts(sys.inspect(stream, false));
  });

  stream.on('data', function(data){
    var _data = data.trim();
    stream.write("You told me: "+data);
    sys.puts(_data);
    if (_data === "bye"){
      stream.write("See you!\n");
      stream.end();
    }
    stream.write("\0");
  });

  stream.on('end', function(){
    stream.end();
  });

});

server.listen(7736, '192.168.173.176');