owlps/libowlps-resultreader/owlps-resultreader-udp.c

89 lines
3.0 KiB
C

/*
* This file is part of the Owl Positioning System (OwlPS).
* OwlPS is a project of the University of Franche-Comte
* (Université de Franche-Comté), France.
*
* Copyright © Université de Franche-Comté 2007-2012.
*
* Corresponding author: Matteo Cypriani <mcy@lm7.fr>
*
***********************************************************************
*
* This software is governed by the CeCILL license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/or redistribute the software under the terms of the CeCILL
* license as circulated by CEA, CNRS and INRIA at the following URL:
* http://www.cecill.info
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided
* only with a limited warranty and the software's authors, the holder
* of the economic rights, and the successive licensors have only
* limited liability.
*
* In this respect, the user's attention is drawn to the risks
* associated with loading, using, modifying and/or developing or
* reproducing the software by the user in light of its specific status
* of free software, that may mean that it is complicated to manipulate,
* and that also therefore means that it is reserved for developers and
* experienced professionals having in-depth computer knowledge. Users
* are therefore encouraged to load and test the software's suitability
* as regards their requirements in conditions enabling the security of
* their systems and/or data to be ensured and, more generally, to use
* and operate it in the same conditions as regards security.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL license and that you accept its terms.
*
***********************************************************************
*
* This is the main source file of OwlPS ResultReader-UDP, a simple
* program demonstrating the use of libowlps-resultreader-udp.
* The received results are printed on the standard output.
*
* This program must be linked against libowlps and its dependencies
* (see the Makefile).
*/
#include "owlps-resultreader.h"
#include <signal.h>
#include <unistd.h>
int main(void)
{
struct sigaction action ; // Signal handler structure
owl_result *result ;
int sockfd ;
/* Set up signal handlers */
action.sa_flags = 0 ;
sigemptyset(&action.sa_mask) ;
action.sa_handler = owl_sigint_handler ;
sigaction(SIGINT, &action, NULL) ;
action.sa_handler = owl_sigterm_handler ;
sigaction(SIGTERM, &action, NULL) ;
/* Open the socket */
sockfd = owl_create_udp_listening_socket(OWL_DEFAULT_RESULT_PORT) ;
if (sockfd < 0)
return 1 ;
/* Read loop */
owl_run = owl_true ;
while (owl_run)
{
if (! (result = owl_receive_position(sockfd)))
return 1 ;
owl_print_result(result) ;
owl_free_result(result) ;
printf("--------------\n") ;
}
/* Cleaning */
close(sockfd) ;
return 0 ;
}