socket_helpers.c File Reference

#include <arpa/inet.h>
#include <errno.h>
#include <ifaddrs.h>
#include <linux/version.h>
#include <netinet/in.h>
#include <net/if.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#include "log.h"
#include "net_definitions.h"
#include "net_utils.h"
#include "socket_helpers.h"
#include "ssdp_static_defs.h"

Include dependency graph for socket_helpers.c:

Go to the source code of this file.

Macros
#define	CHECK_KERNEL_VERSION(...)   LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)

Functions
int	set_send_timeout (SOCKET sock, int timeout)
int	set_receive_timeout (SOCKET sock, int timeout)
int	set_reuseaddr (SOCKET sock)
int	set_reuseport (SOCKET sock)
int	set_keepalive (SOCKET sock, BOOL keepalive)
int	set_ttl (SOCKET sock, int family, int ttl)
int	disable_multicast_loopback (SOCKET sock, int family)
int	join_multicast_group (SOCKET sock, char *multicast_group, char *interface_ip)
SOCKET	setup_socket (socket_conf_s *conf)

Detailed Description

Helper functions for creating and configuring sockets.

Copyright

2017 Andreas Bank, andre.nosp@m.as.m.nosp@m.ikael.nosp@m..ban.nosp@m.k@gma.nosp@m.il.c.nosp@m.om

Definition in file socket_helpers.c.

Function Documentation

int disable_multicast_loopback	(	SOCKET	sock,
		int	family
	)

Disable multicast loopback traffic for a socket.

Parameters

sock	The socket to disable it for.
family	Socket IP type (AF_INET or AF_INET6).

Returns

0 on success, errno otherwise.

Definition at line 118 of file socket_helpers.c.

int join_multicast_group	(	SOCKET	sock,
		char *	multicast_group,
		char *	interface_ip
	)

Join a multicast group.

Parameters

multicast_group	The group to join.
interface_ip	The interface to join on.

Returns

0 on success, errno otherwise.

Definition at line 135 of file socket_helpers.c.

int set_keepalive	(	SOCKET	sock,
		BOOL	keepalive
	)

Set the keepalive for a socket.

Parameters

sock	The socket to enable keepalive for.
keepalive	TRUE to enable keepalive for this socket, FALSE to disable it.

Returns

0 on success, errno otherwise.

Definition at line 93 of file socket_helpers.c.

int set_receive_timeout	(	SOCKET	sock,
		int	timeout
	)

Set the recv-timeout for a socket.

Parameters

sock	The socket to set the timeout for.
timeout	The timeout value to set.

Returns

0 on success, errno otherwise.

Definition at line 48 of file socket_helpers.c.

int set_reuseaddr

(

SOCKET

sock

)

Set the reuseaddr for a socket. This enables the socket to receive from an address already in use (address and port in linux >= 3.9).

Parameters

sock	The socket to set the reuseaddr for.

Returns

0 on success, errno otherwise.

Definition at line 64 of file socket_helpers.c.

int set_reuseport

(

SOCKET

sock

)

Set the reuseport for a socket. This enable socket to receive from a port already in use (no support in linux < 3.9).

Parameters

sock	The socket to set the reuseport for.

Returns

0 on success, errno otherwise.

Definition at line 75 of file socket_helpers.c.

int set_send_timeout	(	SOCKET	sock,
		int	timeout
	)

Set the send-timeout for a socket.

Parameters

sock	The socket to set the timeout for.
timeout	The timeout value to set.

Returns

0 on success, errno otherwise.

Definition at line 32 of file socket_helpers.c.

int set_ttl	(	SOCKET	sock,
		int	family,
		int	ttl
	)

Set the Time-To-Live (ttl) for a socket.

Parameters

sock	The socket to set the ttl for.
ttl	The ttl value to set.

Returns

0 on success, errno otherwise.

Definition at line 103 of file socket_helpers.c.

SOCKET setup_socket

(

socket_conf_s *

conf

)

Create and configure a new socket.

Parameters

conf	The socket configuration to use when creating and configuring the socket.

Returns

A new socket.

Definition at line 375 of file socket_helpers.c.