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When I call ConnectNamedPipe with an OVERLAPPED structure and check GetLastError afterwards, I often see GetLastError return ERROR_SUCCESS. The way I’m reading the documentation, that should never happen. My understanding is that if a client has already connected, ERROR_PIPE_CONNECTED should be set, not ERROR_SUCCESS.
Has anyone else seen this? The OS is 32-bit Windows 7.
That’s typical for OVERLAPPED. It tells whether the parameters are okay before connecting, assuming an asynchronous socket. Once a connection completes or fails, then
GetOverlappedResult()returns the proper status. So I guess this is a minor documentation error.