// ------------------------------- // // -------- Start of File -------- // // ------------------------------- // // ----------------------------------------------------------- // // C++ Source Code File Name: client.cpp // C++ Compiler Used: MSVC, BCC32, GCC, HPUX aCC, SOLARIS CC // Produced By: DataReel Software Development Team // File Creation Date: 10/20/2001 // Date Last Modified: 06/17/2016 // Copyright (c) 2001-2024 DataReel Software Development // ----------------------------------------------------------- // // ------------- Program Description and Details ------------- // // ----------------------------------------------------------- // /* This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Simple broadcast receiver demo using the gxSocket class. */ // ----------------------------------------------------------- // #include "gxdlcode.h" #if defined (__USE_ANSI_CPP__) // Use the ANSI Standard C++ library #include <iostream> using namespace std; // Use unqualified names for Standard C++ library #else // Use the old iostream library by default #include <iostream.h> #endif // __USE_ANSI_CPP__ #include <string.h> #include <stdlib.h> #include "gxsocket.h" int main(int argc, char **argv) { if(argc != 2) { cerr << "Usage: " << argv[0] << " <Broadcast Port>" << "\n" << flush; cerr << "Example: " << argv[0] << " 12345" << "\n" << flush; return 1; } unsigned short port = (unsigned short) atoi(argv[1]); cout << "Constructing broadcast client..." << "\n" << flush; // NOTE: Do not set the IP address here. This will allow the // socket to accept any incoming interface gxSocket client(SOCK_DGRAM, SOCK_DGRAM, IPPROTO_UDP, port); if(!client) { cout << client.SocketExceptionMessage() << "\n" << flush; return 1; } // Bind to the broadcast port int rv = client.Bind(); if(rv < 0) { cout << client.SocketExceptionMessage() << "\n" << flush; return 1; } cout << "Receiving broadcast datagrams on port " << port << "\n" << flush; cout << "Press Ctrl-C to exit" << "\n" << flush; const int buf_len = 255; // Receive buffer size char sbuf[buf_len]; sbuf[0] = 0; while(1) { rv = client.RawReadFrom(sbuf, buf_len); // Non-blocking read if(rv < 0) { cout << client.SocketExceptionMessage() << "\n" << flush; return 1; } sbuf[rv] = 0; // Null terminate the string before printing cout << sbuf << flush; } cout << "Exiting..." << "\n" << flush; client.Close(); // Close the socket connection client.ReleaseSocketLibrary(); return 0; } // ----------------------------------------------------------- // // ------------------------------- // // --------- End of File --------- // // ------------------------------- //