Internal details of the library. Not for public use. More...

Classes
struct	RetransmissionEntry
	An entry in the retransmission queue.

class	RetransmissionQueue
	Class to track outgoing confirmable messages.

class	UriRegistry
	Internal URI registry for mapping paths to callbacks.

Functions
ErrorCode	sendUdp (UDP udp, const uint8_t data, size_t length, IPAddress ip, uint16_t port)
	Wrapper around low level function to send raw UDP data.

unsigned long	getRandomTimeout ()
	Get a random timeout value for retransmissions.

size_t	getMinOptionBytes (uint32_t value)
	Return the minimum number of bytes needed to represent the given value.

Detailed Description

Internal details of the library. Not for public use.

Function Documentation

size_t Coap::Detail::getMinOptionBytes ( uint32_t value )

Return the minimum number of bytes needed to represent the given value.

Note that 0 is represented with 0 bytes, as per CoAP option encoding rules.

Parameters

value The value to evaluate.

unsigned long Coap::Detail::getRandomTimeout ( )

Get a random timeout value for retransmissions.

Returns a random timeout value between COAP_ACK_MIN_TIMEOUT_MS and COAP_ACK_MAX_TIMEOUT_MS as per RFC 7252, Section 4.8.

ErrorCode Coap::Detail::sendUdp	(	UDP *	udp,
		const uint8_t *	data,
		size_t	length,
		IPAddress	ip,
		uint16_t	port )

Wrapper around low level function to send raw UDP data.

Parameters

udp	The UDP instance to use for sending data.
data	Pointer to the data to send.
length	Length of the data in bytes.
ip	Destination IP address.
port	Destination port number.