net.createServer([options][, connectionListener])
Creates a new server. The connectionListener argument is automatically set as a listener for the 'connection' event.
options is an object with the following defaults:
{
allowHalfOpen: false,
pauseOnConnect: false
}
If allowHalfOpen is true, then the socket won't automatically send a FIN packet when the other end of the socket sends a FIN packet. The socket becomes non-readable, but still writable. You should call the end() method explicitl