socket2stream.cc

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/utils/socket2stream.cc,v 1.26 2017/01/12 15:10:28 masarati Exp $ */
/* 
 * MBDyn (C) is a multibody analysis code. 
 * http://www.mbdyn.org
 *
 * Copyright (C) 1996-2017
 *
 * Pierangelo Masarati  <masarati@aero.polimi.it>
 * Paolo Mantegazza     <mantegazza@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 *
 * 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 (version 2 of the License).
 * 
 *
 * 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
 */

#include "mbconfig.h"           /* This goes first in every *.c,*.cc file */

#include <cstring>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <cstdio>
#include <cstdlib>
#include <cerrno>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>

#include <iostream>
#include <sstream>
#include <vector>

#include "sock.h"
#include "s2s.h"

int
main(int argc, char *argv[])
{
        s2s_t   s2s;

        try {
                s2s.parse(argc, argv);
                s2s.prepare();

        } catch (...) {
                s2s.shutdown();
                exit(EXIT_FAILURE);
        }

        if (s2s.nChannels == 0) {
                s2s.nChannels = 1;
        }

        s2s.dbuf.resize(s2s.nChannels);
        const char      *sep = " ";
        while (true) {
                int len = s2s.recv(0);

                switch (len) {
                case -1: {
                        int             save_errno = errno;

                        if (save_errno == EAGAIN && !s2s.is_blocking()) {
                                continue;
                        }
                                
                        const char      *err_msg = strerror(save_errno);
                        silent_cerr("recv(" << s2s.sock << ",\"" << s2s.buf << "\") "
                                "failed (" << save_errno << ": " << err_msg << ")"
                                << std::endl);

                        // fallthru
                }

                case 0:
                        goto done;

                default:
                        break;
                }

                for (int i = 0; i < s2s.nChannels - 1; i++) {
                        std::cout << s2s.dbuf[i] << sep;
                }
                std::cout << s2s.dbuf[s2s.nChannels - 1] << std::endl;
        }

done:;
        s2s.shutdown();
        exit(EXIT_SUCCESS);
}