ClearCommandChannel Method
Sends CCC (Clear Command Channel) command to the server.
Object Oriented Interface
public function doClearCommandChannel($gracefulsslclosure);
Procedural Interface
secureblackboxlite_ftpclient_do_clearcommandchannel($res, $gracefulsslclosure);
Remarks
Use this method to send a CCC command. CCC clears command channel encryption state, turning off TLS encryption.
Some servers expect this command to allow for the control channel to be properly handled by NATs.