SendKeepAlive Method
Sends a keep-alive packet.
Syntax
bool SendKeepAlive(qint64 lConnectionId);
Remarks
Use this method to send a keep-alive packet to a client. Keep alive is an empty packet; keep-alive signals sent occasionally can be used to keep connection up.
Error Handling
This method returns a Boolean value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.