testServer.cpp

Example of a TCP client/server.

/*
 * ViSP, open source Visual Servoing Platform software.
 * Copyright (C) 2005 - 2024 by Inria. All rights reserved.
 *
 * This software is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact Inria about acquiring a ViSP Professional
 * Edition License.
 *
 * See https://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * If you have questions regarding the use of this file, please contact
 * Inria at visp@inria.fr
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Description:
 * Test for TCP client/Server.
 */
 
#include <iostream>
#include <visp3/core/vpServer.h>
 
int main()
{
#ifdef ENABLE_VISP_NAMESPACE
  using namespace VISP_NAMESPACE_NAME;
#endif
#ifdef VISP_HAVE_FUNC_INET_NTOP
  try {
    int port = 35000;
    vpServer serv(port); // Launch the server on localhost
    serv.start();
 
    bool run = true;
    int val;
 
    while (run) {
      serv.checkForConnections();
 
      if (serv.getNumberOfClients() > 0) {
        if (serv.receive(&val) != sizeof(int)) // Receiving a value from the first client
          std::cout << "Error while receiving" << std::endl;
        else
          std::cout << "Received : " << val << std::endl;
 
        val = val + 1;
        if (serv.send(&val) != sizeof(int)) // Sending the new value to the first client
          std::cout << "Error while sending" << std::endl;
        else
          std::cout << "Sending : " << val << std::endl;
      }
    }
    return EXIT_SUCCESS;
  }
  catch (const vpException &e) {
    std::cout << "Catch an exception: " << e << std::endl;
    return EXIT_FAILURE;
  }
#else
  std::cout << "This test doesn't work on win XP where inet_ntop() is not available" << std::endl;
  return EXIT_SUCCESS;
#endif
}