client.js
--------
var net = require('net');

var client = new net.Socket();
client.connect(4000, '127.0.0.1', function() {
        console.log('Connected');
        client.disconnect();
});

--------

root@ZARBAZLURBA:~/ranviermud# ./ranviermud
...
2018-01-08T21:54:06.567Z - info: User connected...
events.js:183
      throw er; // Unhandled 'error' event
      ^

Error: write EPIPE
    at _errnoException (util.js:1022:11)
    at WriteWrap.afterWrite [as oncomplete] (net.js:867:14)
root@ZARBAZLURBA:~/ranviermud# node --version
v8.9.4