coap_io.c File Reference

Network I/O functions. More...

#include "coap3/coap_internal.h"
#include <errno.h>

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Data Structures
struct	in6_pktinfo
struct	in_pktinfo

Macros
#define	MSG_NOSIGNAL   0
#define	SOL_IP   IPPROTO_IP
#define	iov_len_t   size_t
#define	SIN6(A)   ((struct sockaddr_in6 *)(A))

Functions
int	coap_socket_bind_udp (coap_socket_t *sock, const coap_address_t *listen_addr, coap_address_t *bound_addr)
void	coap_socket_close (coap_socket_t *sock)
ssize_t	coap_socket_write (coap_socket_t *sock, const uint8_t *data, size_t data_len)
ssize_t	coap_socket_read (coap_socket_t *sock, uint8_t *data, size_t data_len)
ssize_t	coap_network_send (coap_socket_t *sock, const coap_session_t *session, const uint8_t *data, size_t datalen)
	Function interface for data transmission. More...
void	coap_packet_get_memmapped (coap_packet_t *packet, unsigned char **address, size_t *length)
	Given a packet, set msg and msg_len to an address and length of the packet's data in memory. More...
ssize_t	coap_network_read (coap_socket_t *sock, coap_packet_t *packet)
	Function interface for reading data. More...
unsigned int	coap_io_prepare_epoll (coap_context_t *ctx, coap_tick_t now)
	Any now timed out delayed packet is transmitted, along with any packets associated with requested observable response. More...
unsigned int	coap_io_prepare_io (coap_context_t *ctx, coap_socket_t *sockets[], unsigned int max_sockets, unsigned int *num_sockets, coap_tick_t now)
	Iterates through all the coap_socket_t structures embedded in endpoints or sessions associated with the ctx to determine which are wanting any read, write, accept or connect I/O (COAP_SOCKET_WANT_xxx is set). More...
int	coap_io_process (coap_context_t *ctx, uint32_t timeout_ms)
	The main I/O processing function. More...
int	coap_io_process_with_fds (coap_context_t *ctx, uint32_t timeout_ms, int enfds, fd_set *ereadfds, fd_set *ewritefds, fd_set *eexceptfds)
	The main message processing loop with additional fds for internal select. More...
const char *	coap_socket_format_errno (int error)
const char *	coap_socket_strerror (void)
ssize_t	coap_socket_send (coap_socket_t *sock, coap_session_t *session, const uint8_t *data, size_t data_len)

Detailed Description

Network I/O functions.

Definition in file coap_io.c.

Macro Definition Documentation

iov_len_t

#define iov_len_t   size_t

Definition at line 621 of file coap_io.c.

MSG_NOSIGNAL

#define MSG_NOSIGNAL   0

SIN6

#define SIN6

(

A

)

((struct sockaddr_in6 *)(A))

Definition at line 801 of file coap_io.c.

SOL_IP

#define SOL_IP   IPPROTO_IP

Definition at line 598 of file coap_io.c.

Function Documentation

coap_network_read()

ssize_t coap_network_read	(	coap_socket_t *	sock,
		coap_packet_t *	packet
	)

Function interface for reading data.

This function returns the number of bytes that have been read, or a value less than zero on error. In case of an error, *packet is set to NULL.

Parameters

sock	Socket to read data from
packet	Received packet metadata and payload. src and dst should be preset.

Returns

The number of bytes received on success, or a value less than zero on error.

Definition at line 811 of file coap_io.c.

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coap_network_send()

ssize_t coap_network_send	(	coap_socket_t *	sock,
		const coap_session_t *	session,
		const uint8_t *	data,
		size_t	datalen
	)

Function interface for data transmission.

This function returns the number of bytes that have been transmitted, or a value less than zero on error.

Parameters

sock	Socket to send data with
session	Addressing information for unconnected sockets, or NULL
data	The data to send.
datalen	The actual length of data.

Returns

The number of bytes written on success, or a value less than zero on error.

Definition at line 630 of file coap_io.c.

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coap_packet_get_memmapped()

void coap_packet_get_memmapped	(	coap_packet_t *	packet,
		unsigned char **	address,
		size_t *	length
	)

Given a packet, set msg and msg_len to an address and length of the packet's data in memory.

Definition at line 804 of file coap_io.c.

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coap_socket_bind_udp()

int coap_socket_bind_udp	(	coap_socket_t *	sock,
		const coap_address_t *	listen_addr,
		coap_address_t *	bound_addr
	)

Definition at line 161 of file coap_io.c.

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coap_socket_close()

void coap_socket_close

(

coap_socket_t *

sock

)

Definition at line 377 of file coap_io.c.

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coap_socket_format_errno()

static const char * coap_socket_format_errno

(

int

error

)

Definition at line 1601 of file coap_io.c.

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coap_socket_read()

ssize_t coap_socket_read	(	coap_socket_t *	sock,
		uint8_t *	data,
		size_t	data_len
	)

Definition at line 537 of file coap_io.c.

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coap_socket_send()

ssize_t coap_socket_send	(	coap_socket_t *	sock,
		coap_session_t *	session,
		const uint8_t *	data,
		size_t	data_len
	)

Definition at line 1610 of file coap_io.c.

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coap_socket_strerror()

const char * coap_socket_strerror

(

void

)

Definition at line 1604 of file coap_io.c.

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coap_socket_write()

ssize_t coap_socket_write	(	coap_socket_t *	sock,
		const uint8_t *	data,
		size_t	data_len
	)

Definition at line 483 of file coap_io.c.

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