Fixed bug with -udp address #549
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Last PR #547
Issue
I read something in the Internet about multicasting, unicasting, sockets in C, sample programs.
It's strange, but it seems that in the code simply mixed up the lines.
Tons of materials say that we should use
INADDR_ANYin multicasts, andaddrin unicasts, but the code is upside down, so if we give multicast address, it will works as unicast, and vice versa.I fixed it and checked in Windows - works good, this part does not depend on the platform.