/* * Simple Named Pipe Client * (C) 2005 Jelmer Vernooij * (C) 2009 Stefan Metzmacher * Published to the public domain */ #include #include #define ECHODATA "Black Dog" int main(int argc, char *argv[]) { HANDLE h; DWORD numread = 0; char *outbuffer = malloc(sizeof(ECHODATA)); if (argc == 1) { printf("Usage: %s pipename\n", argv[0]); printf(" Where pipename is something like \\\\servername\\NPECHO\n"); return -1; } h = CreateNamedPipe(argv[1], PIPE_ACCESS_DUPLEX, PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT, PIPE_UNLIMITED_INSTANCES, 1024, 1024, 0, NULL); if (h == INVALID_HANDLE_VALUE) { printf("Error opening: %d\n", GetLastError()); return -1; } ConnectNamedPipe(h, NULL); if (!WriteFile(h, ECHODATA, sizeof(ECHODATA), &numread, NULL)) { printf("Error writing: %d\n", GetLastError()); return -1; } if (!WriteFile(h, ECHODATA, sizeof(ECHODATA), &numread, NULL)) { printf("Error writing: %d\n", GetLastError()); return -1; } FlushFileBuffers(h); DisconnectNamedPipe(h); CloseHandle(h); return 0; }