Better Pipes for Windows

Listing 3: Sample client using the named pipe class

nmpipe_cConnector::nmpipe_cConnector(const char *pPipeName,
                                     int MaxRetries)

{
    if (bInError) {
        return;
    }

    for (int i=0; i<MaxRetries; i++) {
        BOOL bSuccess = WaitNamedPipe(pPipeName,
        NMPWAIT_USE_DEFAULT_WAIT);
    
        if (bSuccess) {
            hPipe = CreateFile(pPipeName,
                GENERIC_WRITE | GENERIC_READ,
                FILE_SHARE_READ | FILE_SHARE_WRITE,
                NULL,
                OPEN_EXISTING,
                FILE_FLAG_OVERLAPPED,
                NULL);
    
            if (hPipe != INVALID_HANDLE_VALUE) {
                return;
            }
    
            REPORT("Failure: CreateFile() -- WinError = %u\n",
                   GetLastError());
        }
        else {
            REPORT("Warning: WaitNamedPipe() failed (retrying)"
                " -- WinError = %u\n", GetLastError());
        }
    }
    REPORT("Failure: WaitNamedPipe() -- retry limit exceeded\n");
    bInError = TRUE;
}
nmpipe_cConnector::~nmpipe_cConnector()
{
    if (hPipe != INVALID_HANDLE_VALUE) {
        FlushFileBuffers(hPipe);
       w CloseHandle(hPipe);
    }
}
//End of File