c++ - Why does calling WSASocket from DllMain lead to a hang? -

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i need destroy objects when dll unloaded. object contains thread calls wsasocket function (for reconnecting connection). so, call destructor dllmain in response dll_process_detach, causes application hang. specifically, call wsasocket locks up.

i know functions cannot called dllmain, functions call loadlibrary , freelibrary. why wsasocket function have same problem?

it's because shouldn't use dllmain cause. many system procs cause deadlock being called dllmain. declare additional export proc deinitialization of dll , call right before freelibrary.

also, recommend read "best dll practices" msft. there lot of reasons stay away dllmain.


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