mcast.c File Reference

File containing the implementation of mDNS utils. More...

#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <net/if.h>
#include <signal.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <syslog.h>
#include <unistd.h>
#include "../utils/log.h"
#include "../utils/sockctl.h"
#include "mcast.h"

Include dependency graph for mcast.c:

Functions
int	join_mcast (int fd, const struct sockaddr_storage *sa, socklen_t sa_len, uint32_t ifindex)
	Join a multicast socket. More...
int	create_recv_mcast (const struct sockaddr_storage *sa, socklen_t sa_len, uint32_t ifindex)
	Create a receive multicast socket. More...
int	create_send_mcast (const struct sockaddr_storage *sa, socklen_t sa_len, uint32_t ifindex)
	Create a send multicast socket. More...

Detailed Description

File containing the implementation of mDNS utils.

Author

Alexandru Mereacre

Date

2021

Copyright

SPDX-FileCopyrightText: © 2021 NQMCyber Ltd and edgesec contributors SPDX-License-Identifier: LGPL-3.0-or-later

Function Documentation

create_recv_mcast()

int create_recv_mcast	(	const struct sockaddr_storage *	sa,
		socklen_t	sa_len,
		uint32_t	ifindex
	)

Create a receive multicast socket.

Parameters

sa	The socket address
sa_len	The socket address length
ifindex	The interface index

Returns

0 on success, -1 on failuer

create_send_mcast()

int create_send_mcast	(	const struct sockaddr_storage *	sa,
		socklen_t	sa_len,
		uint32_t	ifindex
	)

Create a send multicast socket.

Parameters

sa	The socket address
sa_len	The socket address length
ifindex	The interface index

Returns

0 on success, -1 on failuer

join_mcast()

int join_mcast	(	int	fd,
		const struct sockaddr_storage *	sa,
		socklen_t	sa_len,
		uint32_t	ifindex
	)

Join a multicast socket.

Parameters

fd	The socket descriptor
sa	The socket address
sa_len	The socket address length
ifindex	The interface index

Returns

0 on success, -1 on failuer