When a datagram is sent to a closed host/port combination, the host will
likely send back an ICMP error message. In the regular socket API, there
isn't a good way of actually receiving this error, so some Windows kernels
wired that message back up to the call to WSARecvFrom() as a synthetic
datagram. Reading this datagram results in a WSAECONNRESET error code,
which should reported to the user as a refused connection attempt.
To make the errors a bit more informative, the native error strings for
WSAECONNRESET and WSAENETRESET were also added.
Task-number: QTBUG-49301
Change-Id: If659be54ba1b39965b5f481f0c0cb9eeea0a06d2
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Markus Goetz (Woboq GmbH) <markus@woboq.com>
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