Thank you for your help.
in server and multi-client connection configurations
MFC is creating socket communication
Server (Listen side) on OnClose from client (Connect side)
Socket communication has been terminated.
Occasionally, OnClose callbacks do not occur
If there are any possible causes,
Could you teach me?
The other party calls CAsyncSocket::ShutDown and it is not until it has received it correctly. CAsyncSocket:::OnClose occurs, so there are a number of possible causes, such as not ringing, being closed before the call ends, or not being sent due to a communication failure.
By doing Keep-Alive, you may be able to detect the other party's absence.
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