Internal API for handling Sessions. More...

Collaboration diagram for Sessions:

Data Structures
struct	coap_addr_hash_t
	Only used for servers for hashing incoming packets. More...

struct	coap_session_t
	Abstraction of virtual session that can be attached to coap_context_t (client) or coap_endpoint_t (server). More...

struct	coap_endpoint_t
	Abstraction of virtual endpoint that can be attached to coap_context_t. More...

Macros
#define	COAP_SESSION_REF(s) ((s)->ref

#define	COAP_ACK_TIMEOUT(s) ((s)->ack_timeout)

#define	COAP_ACK_RANDOM_FACTOR(s) ((s)->ack_random_factor)

#define	COAP_MAX_RETRANSMIT(s) ((s)->max_retransmit)

#define	COAP_NSTART(s) ((s)->nstart)

#define	COAP_DEFAULT_LEISURE(s) ((s)->default_leisure)

#define	COAP_PROBING_RATE(s) ((s)->probing_rate)

#define	COAP_MAX_PAYLOADS(s) ((s)->max_payloads)

#define	COAP_NON_MAX_RETRANSMIT(s) ((s)->non_max_retransmit)

#define	COAP_NON_TIMEOUT(s) ((s)->non_timeout)

#define	COAP_NON_TIMEOUT_TICKS(s)

#define	COAP_NON_RECEIVE_TIMEOUT(s) ((s)->non_receive_timeout)

#define	COAP_NON_PROBING_WAIT_BASE(s) ((s)->non_probing_wait_base)

#define	COAP_NON_PARTIAL_TIMEOUT(s) ((s)->non_partial_timeout)

#define	COAP_DEFAULT_LEISURE_TICKS(s)
	The DEFAULT_LEISURE definition for the session (s). More...

#define	COAP_MAX_TRANSMIT_SPAN(s)
	The MAX_TRANSMIT_SPAN definition for the session (s). More...

#define	COAP_MAX_TRANSMIT_WAIT(s)
	The MAX_TRANSMIT_WAIT definition for the session (s). More...

#define	COAP_MAX_TRANSMIT_WAIT_TICKS(s) (COAP_MAX_TRANSMIT_WAIT(s) * COAP_TICKS_PER_SECOND)

#define	COAP_PROCESSING_DELAY(s)
	The PROCESSING_DELAY definition for the session (s). More...

#define	COAP_MAX_RTT(s) ((2 * COAP_DEFAULT_MAX_LATENCY) + COAP_PROCESSING_DELAY(s))
	The MAX_RTT definition for the session (s). More...

#define	COAP_EXCHANGE_LIFETIME(s)
	The EXCHANGE_LIFETIME definition for the session (s). More...

#define	COAP_NON_LIFETIME(s) (COAP_MAX_TRANSMIT_SPAN(s) + COAP_DEFAULT_MAX_LATENCY)
	The NON_LIFETIME definition for the session (s). More...

#define	COAP_NON_RECEIVE_TIMEOUT_TICKS(s)
	The NON_RECEIVE_TIMEOUT definition for the session (s). More...

#define	COAP_NON_PROBING_WAIT(s)
	The NON_PROBING_WAIT definition for the session (s). More...

#define	COAP_NON_PROBING_WAIT_TICKS(s)

#define	COAP_NON_PARTIAL_TIMEOUT_TICKS(s)
	The NON_PARTIAL_TIMEOUT definition for the session (s). More...

#define	COAP_NON_TIMEOUT_RANDOM(s) coap_get_non_timeout_random(s)
	The NON_TIMEOUT_RANDOM definition for the session (s). More...

Typedefs
typedef enum coap_ext_token_check_t	coap_ext_token_check_t
	coap_ext_token_check_t values More...

Enumerations
enum	COAP_OSCORE_B_2_STEP { COAP_OSCORE_B_2_NONE = 0 , COAP_OSCORE_B_2_STEP_1 , COAP_OSCORE_B_2_STEP_2 , COAP_OSCORE_B_2_STEP_3 , COAP_OSCORE_B_2_STEP_4 , COAP_OSCORE_B_2_STEP_5 }

enum	coap_ext_token_check_t { COAP_EXT_T_NOT_CHECKED = 0 , COAP_EXT_T_CHECKED , COAP_EXT_T_CHECKING }
	coap_ext_token_check_t values More...

Functions
coap_fixed_point_t	coap_multi_fixed_fixed (coap_fixed_point_t fp1, coap_fixed_point_t fp2)

coap_fixed_point_t	coap_multi_fixed_uint (coap_fixed_point_t fp1, uint32_t u2)

coap_fixed_point_t	coap_add_fixed_fixed (coap_fixed_point_t fp1, coap_fixed_point_t fp2)

coap_fixed_point_t	coap_add_fixed_uint (coap_fixed_point_t fp1, uint32_t u2)

coap_fixed_point_t	coap_sub_fixed_uint (coap_fixed_point_t fp1, uint32_t u2)

coap_fixed_point_t	coap_div_fixed_uint (coap_fixed_point_t fp1, uint32_t u2)

coap_fixed_point_t	coap_get_non_timeout_random (coap_session_t *session)

coap_tick_t	coap_get_non_timeout_random_ticks (coap_session_t *session)

void	coap_session_send_csm (coap_session_t *session)
	Notify session transport has just connected and CSM exchange can now start. More...

void	coap_session_connected (coap_session_t *session)
	Notify session that it has just connected or reconnected. More...

int	coap_session_refresh_psk_hint (coap_session_t session, const coap_bin_const_t psk_hint)
	Refresh the session's current Identity Hint (PSK). More...

int	coap_session_refresh_psk_key (coap_session_t session, const coap_bin_const_t psk_key)
	Refresh the session's current pre-shared key (PSK). More...

int	coap_session_refresh_psk_identity (coap_session_t session, const coap_bin_const_t psk_identity)
	Refresh the session's current pre-shared identity (PSK). More...

coap_session_t *	coap_new_server_session (coap_context_t ctx, coap_endpoint_t ep)
	Creates a new server session for the specified endpoint. More...

void	coap_session_establish (coap_session_t *session)
	Layer function interface for layer below session accept/connect being established. More...

ssize_t	coap_session_send_pdu (coap_session_t session, coap_pdu_t pdu)
	Send a pdu according to the session's protocol. More...

ssize_t	coap_session_delay_pdu (coap_session_t session, coap_pdu_t pdu, coap_queue_t *node)

coap_session_t *	coap_endpoint_get_session (coap_endpoint_t endpoint, const coap_packet_t packet, coap_tick_t now)
	Lookup the server session for the packet received on an endpoint, or create a new one. More...

size_t	coap_session_max_pdu_rcv_size (const coap_session_t *session)
	Get maximum acceptable receive PDU size. More...

void	coap_session_free (coap_session_t *session)

void	coap_session_mfree (coap_session_t *session)

Detailed Description

Internal API for handling Sessions.

Macro Definition Documentation

◆ COAP_ACK_RANDOM_FACTOR

#define COAP_ACK_RANDOM_FACTOR ( s ) ((s)->ack_random_factor)

Definition at line 390 of file coap_session_internal.h.

◆ COAP_ACK_TIMEOUT

#define COAP_ACK_TIMEOUT ( s ) ((s)->ack_timeout)

Definition at line 389 of file coap_session_internal.h.

◆ COAP_DEFAULT_LEISURE

#define COAP_DEFAULT_LEISURE ( s ) ((s)->default_leisure)

Definition at line 393 of file coap_session_internal.h.

◆ COAP_DEFAULT_LEISURE_TICKS

#define COAP_DEFAULT_LEISURE_TICKS ( s )

Value:

(COAP_DEFAULT_LEISURE(s).integer_part * COAP_TICKS_PER_SECOND + \

COAP_DEFAULT_LEISURE(s).fractional_part * COAP_TICKS_PER_SECOND / 1000)

COAP_TICKS_PER_SECOND

#define COAP_TICKS_PER_SECOND

Use ms resolution on POSIX systems.

Definition: coap_time.h:159

COAP_DEFAULT_LEISURE

#define COAP_DEFAULT_LEISURE(s)

Definition: coap_session_internal.h:393

The DEFAULT_LEISURE definition for the session (s).

RFC 7252, Section 4.8 Initial value 5.0 seconds

Definition at line 412 of file coap_session_internal.h.

◆ COAP_EXCHANGE_LIFETIME

#define COAP_EXCHANGE_LIFETIME ( s )

Value:

(COAP_MAX_TRANSMIT_SPAN(s) + (2 * COAP_DEFAULT_MAX_LATENCY) + \

COAP_PROCESSING_DELAY(s))

COAP_DEFAULT_MAX_LATENCY

#define COAP_DEFAULT_MAX_LATENCY

The MAX_LATENCY definition.

Definition: coap_session.h:542

COAP_PROCESSING_DELAY

#define COAP_PROCESSING_DELAY(s)

The PROCESSING_DELAY definition for the session (s).

Definition: coap_session_internal.h:450

COAP_MAX_TRANSMIT_SPAN

#define COAP_MAX_TRANSMIT_SPAN(s)

The MAX_TRANSMIT_SPAN definition for the session (s).

Definition: coap_session_internal.h:421

The EXCHANGE_LIFETIME definition for the session (s).

RFC 7252, Section 4.8.2 Calculation of EXCHANGE_LIFETIME MAX_TRANSMIT_SPAN + (2 * MAX_LATENCY) + PROCESSING_DELAY

Definition at line 469 of file coap_session_internal.h.

◆ COAP_MAX_PAYLOADS

#define COAP_MAX_PAYLOADS ( s ) ((s)->max_payloads)

Definition at line 396 of file coap_session_internal.h.

◆ COAP_MAX_RETRANSMIT

#define COAP_MAX_RETRANSMIT ( s ) ((s)->max_retransmit)

Definition at line 391 of file coap_session_internal.h.

◆ COAP_MAX_RTT

#define COAP_MAX_RTT ( s ) ((2 * COAP_DEFAULT_MAX_LATENCY) + COAP_PROCESSING_DELAY(s))

The MAX_RTT definition for the session (s).

RFC 7252, Section 4.8.2 Calculation of MAX_RTT (2 * MAX_LATENCY) + PROCESSING_DELAY

Definition at line 460 of file coap_session_internal.h.

◆ COAP_MAX_TRANSMIT_SPAN

#define COAP_MAX_TRANSMIT_SPAN ( s )

Value:

  (((s)->ack_timeout.integer_part * 1000 + (s)->ack_timeout.fractional_part) * \
   ((1 << ((s)->max_retransmit)) -1) * \
   ((s)->ack_random_factor.integer_part * 1000 + \
    (s)->ack_random_factor.fractional_part) \
   / 1000000)

The MAX_TRANSMIT_SPAN definition for the session (s).

RFC 7252, Section 4.8.2 Calculation of MAX_TRAMSMIT_SPAN ACK_TIMEOUT * ((2 ** (MAX_RETRANSMIT)) - 1) * ACK_RANDOM_FACTOR

Definition at line 421 of file coap_session_internal.h.

◆ COAP_MAX_TRANSMIT_WAIT

#define COAP_MAX_TRANSMIT_WAIT ( s )

Value:

  (((s)->ack_timeout.integer_part * 1000 + (s)->ack_timeout.fractional_part) * \
   ((1 << ((s)->max_retransmit + 1)) -1) * \
   ((s)->ack_random_factor.integer_part * 1000 + \
    (s)->ack_random_factor.fractional_part) \
   / 1000000)

The MAX_TRANSMIT_WAIT definition for the session (s).

RFC 7252, Section 4.8.2 Calculation of MAX_TRAMSMIT_WAIT ACK_TIMEOUT * ((2 ** (MAX_RETRANSMIT + 1)) - 1) * ACK_RANDOM_FACTOR

Definition at line 434 of file coap_session_internal.h.

◆ COAP_MAX_TRANSMIT_WAIT_TICKS

#define COAP_MAX_TRANSMIT_WAIT_TICKS ( s ) (COAP_MAX_TRANSMIT_WAIT(s) * COAP_TICKS_PER_SECOND)

Definition at line 441 of file coap_session_internal.h.

◆ COAP_NON_LIFETIME

#define COAP_NON_LIFETIME ( s ) (COAP_MAX_TRANSMIT_SPAN(s) + COAP_DEFAULT_MAX_LATENCY)

The NON_LIFETIME definition for the session (s).

RFC 7252, Section 4.8.2 Calculation of NON_LIFETIME MAX_TRANSMIT_SPAN + MAX_LATENCY

Definition at line 479 of file coap_session_internal.h.

◆ COAP_NON_MAX_RETRANSMIT

#define COAP_NON_MAX_RETRANSMIT ( s ) ((s)->non_max_retransmit)

Definition at line 397 of file coap_session_internal.h.

◆ COAP_NON_PARTIAL_TIMEOUT

#define COAP_NON_PARTIAL_TIMEOUT ( s ) ((s)->non_partial_timeout)

Definition at line 404 of file coap_session_internal.h.

◆ COAP_NON_PARTIAL_TIMEOUT_TICKS

#define COAP_NON_PARTIAL_TIMEOUT_TICKS ( s )

Value:

(COAP_NON_PARTIAL_TIMEOUT(s).integer_part * COAP_TICKS_PER_SECOND + \

COAP_NON_PARTIAL_TIMEOUT(s).fractional_part * COAP_TICKS_PER_SECOND / 1000)

COAP_NON_PARTIAL_TIMEOUT

#define COAP_NON_PARTIAL_TIMEOUT(s)

Definition: coap_session_internal.h:404

The NON_PARTIAL_TIMEOUT definition for the session (s).

RFC9177 Section 6.2 Initial value EXCHANGE_LIFETIME (247 seconds)

Definition at line 514 of file coap_session_internal.h.

◆ COAP_NON_PROBING_WAIT

#define COAP_NON_PROBING_WAIT ( s )

Value:

coap_add_fixed_fixed(COAP_NON_PROBING_WAIT_BASE(s), \

COAP_NON_TIMEOUT_RANDOM(s))

COAP_NON_PROBING_WAIT_BASE

#define COAP_NON_PROBING_WAIT_BASE(s)

Definition: coap_session_internal.h:403

COAP_NON_TIMEOUT_RANDOM

#define COAP_NON_TIMEOUT_RANDOM(s)

The NON_TIMEOUT_RANDOM definition for the session (s).

Definition: coap_session_internal.h:524

coap_add_fixed_fixed

coap_fixed_point_t coap_add_fixed_fixed(coap_fixed_point_t fp1, coap_fixed_point_t fp2)

Definition: coap_session.c:50

The NON_PROBING_WAIT definition for the session (s).

RFC9177 Section 6.2 NON_PROBING_WAIT = NON_TIMEOUT * ((2 ** NON_MAX_RETRANSMIT) - 1) * ACK_RANDOM_FACTOR + (2 * MAX_LATENCY) + NON_TIMEOUT_RANDOM Default is 247-248 seconds

Definition at line 500 of file coap_session_internal.h.

◆ COAP_NON_PROBING_WAIT_BASE

#define COAP_NON_PROBING_WAIT_BASE ( s ) ((s)->non_probing_wait_base)

Definition at line 403 of file coap_session_internal.h.

◆ COAP_NON_PROBING_WAIT_TICKS

#define COAP_NON_PROBING_WAIT_TICKS ( s )

Value:

(COAP_NON_PROBING_WAIT(s).integer_part * COAP_TICKS_PER_SECOND + \

COAP_NON_PROBING_WAIT(s).fractional_part * COAP_TICKS_PER_SECOND / 1000)

COAP_NON_PROBING_WAIT

#define COAP_NON_PROBING_WAIT(s)

The NON_PROBING_WAIT definition for the session (s).

Definition: coap_session_internal.h:500

Definition at line 504 of file coap_session_internal.h.

◆ COAP_NON_RECEIVE_TIMEOUT

#define COAP_NON_RECEIVE_TIMEOUT ( s ) ((s)->non_receive_timeout)

Definition at line 402 of file coap_session_internal.h.

◆ COAP_NON_RECEIVE_TIMEOUT_TICKS

#define COAP_NON_RECEIVE_TIMEOUT_TICKS ( s )

Value:

                                            ( \
                                            COAP_NON_RECEIVE_TIMEOUT(s).integer_part * COAP_TICKS_PER_SECOND + \
                                            COAP_NON_RECEIVE_TIMEOUT(s).fractional_part * COAP_TICKS_PER_SECOND / 1000)

The NON_RECEIVE_TIMEOUT definition for the session (s).

RFC9177 Section 6.2 2 * NON_TIMEOUT

Definition at line 488 of file coap_session_internal.h.

◆ COAP_NON_TIMEOUT

#define COAP_NON_TIMEOUT ( s ) ((s)->non_timeout)

Definition at line 398 of file coap_session_internal.h.

◆ COAP_NON_TIMEOUT_RANDOM

#define COAP_NON_TIMEOUT_RANDOM ( s ) coap_get_non_timeout_random(s)

The NON_TIMEOUT_RANDOM definition for the session (s).

RFC9177 Section 6.2 Default is 2-3 seconds

Definition at line 524 of file coap_session_internal.h.

◆ COAP_NON_TIMEOUT_TICKS

#define COAP_NON_TIMEOUT_TICKS ( s )

Value:

(COAP_NON_TIMEOUT(s).integer_part * COAP_TICKS_PER_SECOND + \

COAP_NON_TIMEOUT(s).fractional_part * COAP_TICKS_PER_SECOND / 1000)

COAP_NON_TIMEOUT

#define COAP_NON_TIMEOUT(s)

Definition: coap_session_internal.h:398

Definition at line 399 of file coap_session_internal.h.

◆ COAP_NSTART

#define COAP_NSTART ( s ) ((s)->nstart)

Definition at line 392 of file coap_session_internal.h.

◆ COAP_PROBING_RATE

#define COAP_PROBING_RATE ( s ) ((s)->probing_rate)

Definition at line 394 of file coap_session_internal.h.

◆ COAP_PROCESSING_DELAY

#define COAP_PROCESSING_DELAY ( s )

Value:

(((s)->ack_timeout.integer_part * 1000 + (s)->ack_timeout.fractional_part + \

500) / 1000)

The PROCESSING_DELAY definition for the session (s).

RFC 7252, Section 4.8.2 Calculation of PROCESSING_DELAY PROCESSING_DELAY set to ACK_TIMEOUT

Definition at line 450 of file coap_session_internal.h.

◆ COAP_SESSION_REF

#define COAP_SESSION_REF ( s ) ((s)->ref

Definition at line 386 of file coap_session_internal.h.

Typedef Documentation

◆ coap_ext_token_check_t

typedef enum coap_ext_token_check_t coap_ext_token_check_t

coap_ext_token_check_t values

Enumeration Type Documentation

◆ coap_ext_token_check_t

enum coap_ext_token_check_t

coap_ext_token_check_t values

Enumerator
COAP_EXT_T_NOT_CHECKED	Not checked.
COAP_EXT_T_CHECKED	Token size valid.
COAP_EXT_T_CHECKING	Token size check request sent.

Definition at line 58 of file coap_session_internal.h.

◆ COAP_OSCORE_B_2_STEP

enum COAP_OSCORE_B_2_STEP

Enumerator
COAP_OSCORE_B_2_NONE
COAP_OSCORE_B_2_STEP_1
COAP_OSCORE_B_2_STEP_2
COAP_OSCORE_B_2_STEP_3
COAP_OSCORE_B_2_STEP_4
COAP_OSCORE_B_2_STEP_5

Definition at line 46 of file coap_session_internal.h.

Function Documentation

◆ coap_add_fixed_fixed()

coap_fixed_point_t coap_add_fixed_fixed	(	coap_fixed_point_t	fp1,
		coap_fixed_point_t	fp2
	)

Definition at line 50 of file coap_session.c.

◆ coap_add_fixed_uint()

coap_fixed_point_t coap_add_fixed_uint	(	coap_fixed_point_t	fp1,
		uint32_t	u2
	)

Definition at line 60 of file coap_session.c.

◆ coap_div_fixed_uint()

coap_fixed_point_t coap_div_fixed_uint	(	coap_fixed_point_t	fp1,
		uint32_t	u2
	)

Definition at line 76 of file coap_session.c.

◆ coap_endpoint_get_session()

coap_session_t * coap_endpoint_get_session	(	coap_endpoint_t *	endpoint,
		const coap_packet_t *	packet,
		coap_tick_t	now
	)

Lookup the server session for the packet received on an endpoint, or create a new one.

Parameters

endpoint	Active endpoint the packet was received on.
packet	Received packet.
now	The current time in ticks.

Returns: The CoAP session or NULL if error.

◆ coap_get_non_timeout_random()

coap_fixed_point_t coap_get_non_timeout_random ( coap_session_t * session )

◆ coap_get_non_timeout_random_ticks()

coap_tick_t coap_get_non_timeout_random_ticks ( coap_session_t * session )

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◆ coap_multi_fixed_fixed()

coap_fixed_point_t coap_multi_fixed_fixed	(	coap_fixed_point_t	fp1,
		coap_fixed_point_t	fp2
	)

Definition at line 30 of file coap_session.c.

◆ coap_multi_fixed_uint()

coap_fixed_point_t coap_multi_fixed_uint	(	coap_fixed_point_t	fp1,
		uint32_t	u2
	)

Definition at line 40 of file coap_session.c.

◆ coap_new_server_session()

coap_session_t * coap_new_server_session	(	coap_context_t *	ctx,
		coap_endpoint_t *	ep
	)

Creates a new server session for the specified endpoint.

Parameters

ctx	The CoAP context.
ep	An endpoint where an incoming connection request is pending.

Returns: A new CoAP session or NULL if failed. Call coap_session_release to add to unused queue.

◆ coap_session_connected()

void coap_session_connected ( coap_session_t * session )

Notify session that it has just connected or reconnected.

Parameters

session The CoAP session.

Definition at line 759 of file coap_session.c.

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◆ coap_session_delay_pdu()

ssize_t coap_session_delay_pdu	(	coap_session_t *	session,
		coap_pdu_t *	pdu,
		coap_queue_t *	node
	)

Definition at line 650 of file coap_session.c.

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◆ coap_session_establish()

void coap_session_establish ( coap_session_t * session )

Layer function interface for layer below session accept/connect being established.

This function initiates a CSM request for reliable protocols, or coap_session_connect() for un-reliable protocols.

Parameters

session Session that the lower layer accept/connect was done on.

Definition at line 1270 of file coap_session.c.

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◆ coap_session_free()

void coap_session_free ( coap_session_t * session )

Definition at line 545 of file coap_session.c.

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◆ coap_session_max_pdu_rcv_size()

size_t coap_session_max_pdu_rcv_size ( const coap_session_t * session )

Get maximum acceptable receive PDU size.

Parameters

session The CoAP session.

Returns: maximum PDU size, not including header (but including token).

Definition at line 598 of file coap_session.c.

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◆ coap_session_mfree()

void coap_session_mfree ( coap_session_t * session )

Definition at line 464 of file coap_session.c.

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◆ coap_session_refresh_psk_hint()

int coap_session_refresh_psk_hint	(	coap_session_t *	session,
		const coap_bin_const_t *	psk_hint
	)

Refresh the session's current Identity Hint (PSK).

Note: A copy of psk_hint is maintained in the session by libcoap.

Parameters

session	The current coap_session_t object.
psk_hint	If NULL, the Identity Hint will revert to the initial Identity Hint used at session setup.

Returns: 1 if successful, else 0.

Definition at line 1376 of file coap_session.c.

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◆ coap_session_refresh_psk_identity()

int coap_session_refresh_psk_identity	(	coap_session_t *	session,
		const coap_bin_const_t *	psk_identity
	)

Refresh the session's current pre-shared identity (PSK).

Note: A copy of psk_identity is maintained in the session by libcoap.

Parameters

session	The current coap_session_t object.
psk_identity	If NULL, the pre-shared identity will revert to the initial pre-shared key used as session setup.

Returns: 1 if successful, else 0.

Definition at line 1433 of file coap_session.c.

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◆ coap_session_refresh_psk_key()

int coap_session_refresh_psk_key	(	coap_session_t *	session,
		const coap_bin_const_t *	psk_key
	)

Refresh the session's current pre-shared key (PSK).

Note: A copy of psk_key is maintained in the session by libcoap.

Parameters

session	The current coap_session_t object.
psk_key	If NULL, the pre-shared key will revert to the initial pre-shared key used at session setup.

Returns: 1 if successful, else 0.

Definition at line 1405 of file coap_session.c.

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◆ coap_session_send_csm()

void coap_session_send_csm ( coap_session_t * session )

Notify session transport has just connected and CSM exchange can now start.

Parameters

session The CoAP session.

Definition at line 691 of file coap_session.c.

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◆ coap_session_send_pdu()

ssize_t coap_session_send_pdu	(	coap_session_t *	session,
		coap_pdu_t *	pdu
	)

Send a pdu according to the session's protocol.

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

Parameters

session	Session to send pdu on.
pdu	The pdu to send.

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

Definition at line 784 of file coap_net.c.

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◆ coap_sub_fixed_uint()

coap_fixed_point_t coap_sub_fixed_uint	(	coap_fixed_point_t	fp1,
		uint32_t	u2
	)

Definition at line 68 of file coap_session.c.

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ COAP_ACK_RANDOM_FACTOR

◆ COAP_ACK_TIMEOUT

◆ COAP_DEFAULT_LEISURE

◆ COAP_DEFAULT_LEISURE_TICKS

◆ COAP_EXCHANGE_LIFETIME

◆ COAP_MAX_PAYLOADS

◆ COAP_MAX_RETRANSMIT

◆ COAP_MAX_RTT

◆ COAP_MAX_TRANSMIT_SPAN

◆ COAP_MAX_TRANSMIT_WAIT

◆ COAP_MAX_TRANSMIT_WAIT_TICKS

◆ COAP_NON_LIFETIME

◆ COAP_NON_MAX_RETRANSMIT

◆ COAP_NON_PARTIAL_TIMEOUT

◆ COAP_NON_PARTIAL_TIMEOUT_TICKS

◆ COAP_NON_PROBING_WAIT

◆ COAP_NON_PROBING_WAIT_BASE

◆ COAP_NON_PROBING_WAIT_TICKS

◆ COAP_NON_RECEIVE_TIMEOUT

◆ COAP_NON_RECEIVE_TIMEOUT_TICKS

◆ COAP_NON_TIMEOUT

◆ COAP_NON_TIMEOUT_RANDOM

◆ COAP_NON_TIMEOUT_TICKS

◆ COAP_NSTART

◆ COAP_PROBING_RATE

◆ COAP_PROCESSING_DELAY

◆ COAP_SESSION_REF

Typedef Documentation

◆ coap_ext_token_check_t

Enumeration Type Documentation

◆ coap_ext_token_check_t

◆ COAP_OSCORE_B_2_STEP

Function Documentation

◆ coap_add_fixed_fixed()

◆ coap_add_fixed_uint()

◆ coap_div_fixed_uint()

◆ coap_endpoint_get_session()

◆ coap_get_non_timeout_random()

◆ coap_get_non_timeout_random_ticks()

◆ coap_multi_fixed_fixed()

◆ coap_multi_fixed_uint()

◆ coap_new_server_session()

◆ coap_session_connected()

◆ coap_session_delay_pdu()

◆ coap_session_establish()

◆ coap_session_free()

◆ coap_session_max_pdu_rcv_size()

◆ coap_session_mfree()

◆ coap_session_refresh_psk_hint()

◆ coap_session_refresh_psk_identity()

◆ coap_session_refresh_psk_key()

◆ coap_session_send_csm()

◆ coap_session_send_pdu()

◆ coap_sub_fixed_uint()