Fired when the class is ready to send data.
Object Oriented Interface
public function fireReadyToSend($param);
ipworks_telnet_register_callback($res, 9, array($this, 'fireReadyToSend'));
The ReadyToSend event indicates that the underlying TCP/IP subsystem is ready to accept data after a failed DataToSend. The event is also fired immediately after a connection to the remote host is established.