tree 6a4e49ab8ded213e4b3676eb46f84a57ac5e03f6
parent d2a7d7c185f98df8f3e585e5620cbc0482e45fac
author Marc Hoersken <info@marc-hoersken.de> 1595791606 +0200
committer Marc Hoersken <info@marc-hoersken.de> 1598350305 +0200
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multi: expand pre-check for socket readiness

Check readiness of all sockets before waiting on them
to avoid locking in case the one-time event FD_WRITE
was already consumed by a previous wait operation.

More information about WinSock network events:
https://docs.microsoft.com/en-us/windows/win32/api/
   winsock2/nf-winsock2-wsaeventselect#return-value

Closes #5634