NodeJS crash when calling socket.connect in quick succession?

I'm trying to read lines of a file and on each line is a host, when each line is read I then socket.connect to the hostname on that line.

while (index > -1) {
var line = remaining.substring(0, index);
remaining = remaining.substring(index + 1);

host = line.split(',');

$.connect(port, host[1], function(err) {
  this.write(request);
  console.log('c');
});

index = remaining.indexOf('\n');
}

This causes an error with an errno of 37:

{ [Error: connect Unknown system errno 37] code: 'Unknown system errno 37', errno: 'Unknown system errno 37', syscall: 'connect' }

How can i resolve this or where can i find further information on the error? I looked for further information on the errno and the best I have is:

{ errno: 37, code: 'EPROTO', description: 'protocol error' }

EDIT: The error is being generated by the on error event listener:

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