question: protected void sendClosingMessage ( ) { try { send ( ConnectionMessage . CLOSING , NetworkProtocol . TCP ) ; } catch ( Exception e ) { log . warning ( "TCP already disconnected or error: " + e . getMessage ( ) ) ; } try { send ( ConnectionMessage . CLOSING , NetworkProtocol . UDP ) ; } catch ( Exception e ) { log . warning ( "UDP already disconnected or error: " + e . getMessage ( ) ) ; } }
target:  Send a message (hint) that this end of connection is about to close