BasicConnection.cpp

int BasicConnection(DWORD pid)
{
    wchar_t pszPipeName[256];

    // build the pipe name as described in the protocol
    int nCharactersWritten = -1;
    nCharactersWritten = wsprintf(
        pszPipeName,
        L"\\\\.\\pipe\\dotnet-diagnostic-%d",
        pid
    );

    // check that CLR has created the diagnostics named pipe
    if (!::WaitNamedPipe(pszPipeName, 200))
    {
        auto error = ::GetLastError();
        std::cout << "Diagnostics named pipe is not available for process #" << pid << " (" << error << ")" << "\n";
        return -1;
    }

    // connect to the named pipe
    HANDLE hPipe;
    hPipe = ::CreateFile(
        pszPipeName,    // pipe name
        GENERIC_READ |  // read and write access
        GENERIC_WRITE,
        0,              // no sharing
        NULL,           // default security attributes
        OPEN_EXISTING,  // opens existing pipe
        0,              // default attributes
        NULL);          // no template file

    if (hPipe == INVALID_HANDLE_VALUE)
    {
        std::cout << "Impossible to connect to " << pszPipeName << "\n";
        return -2;
    }

        // ... send a command...

    // don't forget to close the named pipe
    ::CloseHandle(hPipe);

    return 0;
}