Thread: how to know port is free

Hi;

Fyi, i've created few connection let say with port 5001, 5002 .... now i've stop & kill the connection for port 5002, and before i restart a new connection with using same port 5002, how do i make sure:

- the port is free , no more listen / close_wait

then the program will only to invoke create_conn() procedure?

tq.

The only way I can think of to check whether a particular port is free is to attempt a bind() on that port. If the bind() fails with WSAEADDRINUSE (or the Linux equivalent), then you know that the port is already in use.