Datagram (UDP) Support

Internal API for handling CoAP Datagrams (UDP) (RFC7252) More...

Collaboration diagram for Datagram (UDP) Support:

Functions
ssize_t	coap_socket_send (coap_socket_t *sock, coap_session_t *session, const uint8_t *data, size_t datalen)
	Function interface for data transmission.
ssize_t	coap_socket_recv (coap_socket_t *sock, coap_packet_t *packet)
	Function interface for reading data.
void	coap_socket_dgrm_close (coap_socket_t *sock)
	Function interface to close off a datagram socket.

Detailed Description

Internal API for handling CoAP Datagrams (UDP) (RFC7252)

Function Documentation

coap_socket_dgrm_close()

void coap_socket_dgrm_close

(

coap_socket_t *

sock

)

Function interface to close off a datagram socket.

Internal function.

Parameters

sock	Socket to close.

Definition at line 891 of file coap_dgrm_posix.c.

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coap_socket_recv()

ssize_t coap_socket_recv	(	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.

Internal function.

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 671 of file coap_dgrm_posix.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	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.

Internal function.

Parameters

sock	Socket to send data over.
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 478 of file coap_dgrm_posix.c.

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