Socket listen doesn't unbind in C++ under linux

Question

I have a socket that listens on some port. I send the SIGSTOP signal to the thread that waits on the port (using accept) and terminate it. then I close the fd of the socket

Answer 1

I think the problem is that you have not properly closed the socket and/or your program.The socket probably still exists in the OS. check it with something like nestat -an. You should also check if your process has exited. If it has correctly ended, it should have closed your socket.

What you should do is :

• interrupt your thread with a signal.
• when interrupted your thread should cleanly close the socket before the end.
• then you can cleanly exit from your program.

my2cents,