| //*************************************************************** // From the book "Win32 System Services: The Heart of Windows NT" // by Marshall Brain // Published by Prentice Hall file:// // This code implements a simple named pipe server (receiver). file://*************************************************************** // ssnprecv.cpp // Usage: ssnprecv #include #include int main() { char toDisptxt[80]; HANDLE ssnpPipe; DWORD NumBytesRead; /* Create a named pipe for receiving messages */ ssnpPipe=CreateNamedPipe("\\\\.\\pipe\\ssnp", PIPE_ACCESS_INBOUND, PIPE_TYPE_MESSAGE | PIPE_WAIT, 1, 0, 0, 150, (LPSECURITY_ATTRIBUTES) NULL); /* Check and see if the named pipe was created */ if (ssnpPipe == INVALID_HANDLE_VALUE) { cerr << "ERROR: Unable to create a named pipe. " << endl; return (1); } /* Allow a client to connect to the name pipe, terminate if unsuccessful */ cout << "Waiting for connection... " << endl; if(!ConnectNamedPipe(ssnpPipe, (LPOVERLAPPED) NULL)) { cerr << "ERROR: Unable to connect a named pipe " << GetLastError() << endl; CloseHandle(ssnpPipe); return (1); } /* Repeatedly check for messages until the program is terminated */ while(1) { /* Read the message and check to see if read was successful */ if (!ReadFile(ssnpPipe, toDisptxt, sizeof(toDisptxt), &NumBytesRead, (LPOVERLAPPED) NULL)) { cerr << "ERROR: Unable to read from named pipe " << GetLastError() << endl; CloseHandle(ssnpPipe); return (1); } /* Display the Message */ cout << toDisptxt << endl; } /* while */ } |
