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net/coap: allow user to configure message retry macros

This commit is contained in:
Ken Bannister 2018-12-29 11:49:53 -05:00
parent 07ceddd9b1
commit 94660f4db7

View File

@ -157,20 +157,52 @@ extern "C" {
/** @} */
/**
* @name Timing parameters
* @defgroup net_coap_conf CoAP compile configurations
* @ingroup net_coap
* @ingroup config
* @{
*/
#define COAP_ACK_TIMEOUT (2U)
#define COAP_RANDOM_FACTOR (1.5)
/**
* @brief Maximum variation for confirmable timeout.
* @brief Timeout in seconds for a response to a confirmable request
*
* This value is for the response to the *initial* confirmable message. The
* timeout doubles for subsequent retries. To avoid synchronization of resends
* across hosts, the actual timeout is chosen randomly between
* @ref COAP_ACK_TIMEOUT and (@ref COAP_ACK_TIMEOUT * @ref COAP_RANDOM_FACTOR).
*/
#ifndef COAP_ACK_TIMEOUT
#define COAP_ACK_TIMEOUT (2U)
#endif
/** @brief Used to calculate upper bound for timeout; see @ref COAP_ACK_TIMEOUT */
#ifndef COAP_RANDOM_FACTOR
#define COAP_RANDOM_FACTOR (1.5)
#endif
/**
* @brief Approximation for maximum variation for confirmable timeout
*
* Must be an integer, defined as:
*
* (COAP_ACK_TIMEOUT * COAP_RANDOM_FACTOR) - COAP_ACK_TIMEOUT
*
* Like @ref COAP_ACK_TIMEOUT, this value is valid for the initial confirmable
* message, and doubles for subsequent retries.
*/
#ifndef COAP_ACK_VARIANCE
#define COAP_ACK_VARIANCE (1U)
#endif
/** @brief Maximum number of retransmissions for a confirmable request */
#ifndef COAP_MAX_RETRANSMIT
#define COAP_MAX_RETRANSMIT (4)
#endif
/** @} */
/**
* @name Timing parameters
* @{
*/
#define COAP_NSTART (1)
#define COAP_DEFAULT_LEISURE (5)
/** @} */