udp.c File Reference

Functions to send/receive UDP packets. More...

#include <freeradius-devel/udp.h>

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Macros
#define	FR_DEBUG_STRERROR_PRINTF   if (fr_debug_lvl) fr_strerror_printf
#define	UDP_UNUSED   UNUSED

Functions
ssize_t	udp_recv (int sockfd, void *data, size_t data_len, int flags, fr_ipaddr_t *src_ipaddr, uint16_t *src_port, fr_ipaddr_t *dst_ipaddr, uint16_t *dst_port, UDP_UNUSED int *if_index, struct timeval *when)
	Read a UDP packet. More...
void	udp_recv_discard (int sockfd)
	Discard the next UDP packet. More...
ssize_t	udp_recv_peek (int sockfd, void *data, size_t data_len, int flags, fr_ipaddr_t *src_ipaddr, uint16_t *src_port)
	Peek at the header of a UDP packet. More...
ssize_t	udp_send (int sockfd, void *data, size_t data_len, int flags, UDP_UNUSED fr_ipaddr_t *src_ipaddr, UDP_UNUSED uint16_t src_port, UDP_UNUSED int if_index, fr_ipaddr_t *dst_ipaddr, uint16_t dst_port)
	Send a packet via a UDP socket. More...

Detailed Description

Functions to send/receive UDP packets.

Id:

3d1794bffa841e33d7c761f94c6d22b82d62d4fe

Copyright

2000-2003,2006 The FreeRADIUS server project

Definition in file udp.c.

Macro Definition Documentation

#define FR_DEBUG_STRERROR_PRINTF   if (fr_debug_lvl) fr_strerror_printf

Definition at line 39 of file udp.c.

#define UDP_UNUSED   UNUSED

Definition at line 36 of file udp.c.

Function Documentation

ssize_t udp_recv	(	int	sockfd,
		void *	data,
		size_t	data_len,
		int	flags,
		fr_ipaddr_t *	src_ipaddr,
		uint16_t *	src_port,
		fr_ipaddr_t *	dst_ipaddr,
		uint16_t *	dst_port,
		UDP_UNUSED int *	if_index,
		struct timeval *	when
	)

Read a UDP packet.

Parameters

[in]	sockfd	we're reading from.
[out]	data	pointer where data will be written
[in]	data_len	length of data to read
[in]	flags	for things
[out]	src_ipaddr	of the packet.
[out]	src_port	of the packet.
[out]	dst_ipaddr	of the packet.
[out]	dst_port	of the packet.
[out]	if_index	of the interface that received the packet.
[out]	when	the packet was received.

Returns

• > 0 on success (number of bytes read).
• < 0 on failure.

Definition at line 177 of file udp.c.

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void udp_recv_discard

(

int

sockfd

)

Discard the next UDP packet.

Parameters

[in]

sockfd

we're reading from.

Definition at line 105 of file udp.c.

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ssize_t udp_recv_peek	(	int	sockfd,
		void *	data,
		size_t	data_len,
		int	flags,
		fr_ipaddr_t *	src_ipaddr,
		uint16_t *	src_port
	)

Peek at the header of a UDP packet.

Parameters

[in]	sockfd	we're reading from.
[out]	data	pointer where data will be written
[in]	data_len	length of data to read
[in]	flags	for things
[out]	src_ipaddr	of the packet.
[out]	src_port	of the packet.

Definition at line 125 of file udp.c.

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ssize_t udp_send	(	int	sockfd,
		void *	data,
		size_t	data_len,
		int	flags,
		UDP_UNUSED fr_ipaddr_t *	src_ipaddr,
		UDP_UNUSED uint16_t	src_port,
		UDP_UNUSED int	if_index,
		fr_ipaddr_t *	dst_ipaddr,
		uint16_t	dst_port
	)

Send a packet via a UDP socket.

Parameters

[in]	sockfd	we're reading from.
[in]	data	pointer to data to send
[in]	data_len	length of data to send
[in]	flags	to pass to send(), or sendto()
[in]	src_ipaddr	of the packet.
[in]	src_port	of the packet.
[in]	if_index	of the packet.
[in]	dst_ipaddr	of the packet.
[in]	dst_port	of the packet.

Definition at line 53 of file udp.c.

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