Errno 10061 : No connection could be made because the target machine actively refused it ( client – server )

10061 is WSAECONNREFUSED, ‘connection refused’, which means there was nothing listening at the IP:port you tried to connect to.

There was a firewall product around the year 2000 that issued refusals instead of ignoring incoming connections to blocked ports, but this was quickly recognised as an information leak to attackers and corrected or withdrawn.

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