socketClientExample.cpp

/*
MobileRobots Advanced Robotics Interface for Applications (ARIA)
Copyright (C) 2004, 2005 ActivMedia Robotics LLC
Copyright (C) 2006, 2007 MobileRobots Inc.

     This program 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.

     This program 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 General Public License for more details.

     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

If you wish to redistribute ARIA under different terms, contact 
MobileRobots for information about a commercial version of ARIA at 
robots@mobilerobots.com or 
MobileRobots Inc, 19 Columbia Drive, Amherst, NH 03031; 800-639-9481
*/

#include "Aria.h"


int main()
{
  // The string to send to the server. 
  char *strToSend="Hello Server";
  // The buffer in which to recieve the hello from the server
  char buff[100];
  // The size of the string the server sent
  size_t strSize;

  // The socket object
  ArSocket sock;

  // Initialize Aria.  It is especially important to do
  // this on Windows, because it will initialize Window's
  // sockets system. 
  Aria::init();

  // Connect to the server
  ArLog::log(ArLog::Normal, "socketClientExample: Connecting to localhost TCP port 7777...");
  if (sock.connect("localhost", 7777, ArSocket::TCP))
    ArLog::log(ArLog::Normal, "socketClientExample: Connected to server at localhost TCP port 7777.");
  else
  {
    ArLog::log(ArLog::Terse, "socketClientExample: Error connecting to server at localhost TCP port 7777: %s", sock.getErrorStr().c_str());
    return(-1);
  }

  // Read data from the socket. read() will block until
  // data is received. 
  strSize=sock.read(buff, sizeof(buff));

  // If the amount read is 0 or less, its an error condition.
  if (strSize > 0)
  {
    buff[strSize]='\0'; // Terminate the string with a NULL character:
    ArLog::log(ArLog::Normal, "socketClientExample: Server said: \"%s\"", buff);
  }
  else
  {
      ArLog::log(ArLog::Terse, "socketClientExample: Error in waiting/reading from the server.");
    return(-1);
  }

  // Send the string 'Hello Server' to the server. write() should
  // return the same number of bytes that we told it to write. Otherwise,
  // its an error condition.
  if (sock.write(strToSend, strlen(strToSend)) == strlen(strToSend))
    ArLog::log(ArLog::Normal, "socketClientExample: Said hello to the server.");
  else
  {
      ArLog::log(ArLog::Terse, "socketClientExample: Error sending hello string to the server.");
    return(-1);
  }

  // Now close the connection to the server
  sock.close();
  ArLog::log(ArLog::Normal, "socketClientExample: Socket to server closed.");

  // Uninitialize Aria and exit
  Aria::uninit();
  return(0);
}

---