[node.js] tcp server error

var net = require('net');

var server = net.createServer(function (socket)
{
    socket.write("Echo server\r\n");

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

    socket.on('end', function ()
    {
         socket.end('goodbye\r\n');
    });

});

server.on('error', function(err)
{
     console.log('error');
});

server.listen(8124, "127.0.0.1");

node.js:116
        throw e; // process.nextTick error, or 'error' event on first tick
        ^
Error: ECONNRESET, Connection reset by peer
    at Socket._readImpl (net.js:142:14)
    at Socket._onReadable (net.js:608:22)
    at IOWatcher.onReadable [as callback] (net.js:156:10)