This structure represents the CoAP transmission parameters.

#include < include/openthread/coap.h >

Public Attributes
uint32_t	mAckTimeout
	Minimum spacing before first retransmission when ACK is not received, in milliseconds (RFC7252 default value is 2000ms).

uint8_t	mAckRandomFactorNumerator
	Numerator of ACK_RANDOM_FACTOR used to calculate maximum spacing before first retransmission when ACK is not received (RFC7252 default value of ACK_RANDOM_FACTOR is 1.5; must not be decreased below 1).

uint8_t	mAckRandomFactorDenominator
	Denominator of ACK_RANDOM_FACTOR used to calculate maximum spacing before first retransmission when ACK is not received (RFC7252 default value of ACK_RANDOM_FACTOR is 1.5; must not be decreased below 1).

uint8_t	mMaxRetransmit
	Maximum number of retransmissions for CoAP Confirmable messages (RFC7252 default value is 4).

This structure represents the CoAP transmission parameters.

Note: mAckTimeout * ((2 ** (mMaxRetransmit + 1)) - 1) * (mAckRandomFactorNumerator / mAckRandomFactorDenominator) must not exceed what can be represented by a uint32_t (0xffffffff). This limitation allows OpenThread to avoid 64-bit arithmetic.

The documentation for this struct was generated from the following file:

otCoapTxParameters Struct Reference API > Add-Ons > CoAP > CoAP

Public Attributes