23 #include <lwip/ip_addr.h>
167 const uint8_t *key,
size_t key_len );
249 unsigned int max_idle_sessions);
271 unsigned int session_timeout);
293 unsigned int csm_tmeout);
316 unsigned int max_handshake_sessions);
469 #define coap_send_large(session, pdu) coap_send(session, pdu)
510 #define coap_join_mcast_group(ctx, groupname) \
511 (coap_join_mcast_group_intf(ctx, groupname, NULL))
534 #define COAP_IO_WAIT 0
535 #define COAP_IO_NO_WAIT ((uint32_t)-1)
596 int nfds, fd_set *readfds, fd_set *writefds,
644 unsigned int max_sockets,
645 unsigned int *num_sockets,
752 unsigned int max_sockets,
753 unsigned int *num_sockets,
776 #define COAP_RUN_NONBLOCK COAP_RUN_NONBLOCK_deprecated_use_COAP_IO_NO_WAIT
777 #define COAP_RUN_BLOCK COAP_RUN_BLOCK_deprecated_use_COAP_IO_WAIT
Defines the application visible session information.
void coap_io_do_io(coap_context_t *ctx, coap_tick_t now)
Processes any outstanding read, write, accept or connect I/O as indicated in the coap_socket_t struct...
unsigned int coap_io_prepare_epoll(coap_context_t *ctx, coap_tick_t now)
Any now timed out delayed packet is transmitted, along with any packets associated with requested obs...
void coap_io_do_epoll(coap_context_t *ctx, struct epoll_event *events, size_t nevents)
Process all the epoll events.
unsigned int coap_io_prepare_io(coap_context_t *ctx, coap_socket_t *sockets[], unsigned int max_sockets, unsigned int *num_sockets, coap_tick_t now)
Iterates through all the coap_socket_t structures embedded in endpoints or sessions associated with t...
int coap_io_process(coap_context_t *ctx, uint32_t timeout_ms)
The main I/O processing function.
int coap_io_process_with_fds(coap_context_t *ctx, uint32_t timeout_ms, int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds)
The main message processing loop with additional fds for internal select.
uint64_t coap_tick_t
This data type represents internal timer ticks with COAP_TICKS_PER_SECOND resolution.
coap_mid_t coap_send_ack(coap_session_t *session, const coap_pdu_t *request)
Sends an ACK message with code 0 for the specified request to dst.
void coap_context_set_session_timeout(coap_context_t *context, unsigned int session_timeout)
Set the session timeout value.
int coap_context_set_psk2(coap_context_t *context, coap_dtls_spsk_t *setup_data)
Set the context's default PSK hint and/or key for a server.
unsigned int coap_context_get_max_handshake_sessions(const coap_context_t *context)
Get the session timeout value.
uint16_t coap_new_message_id(coap_session_t *session)
Returns a new message id and updates session->tx_mid accordingly.
void(* coap_pong_handler_t)(coap_session_t *session, const coap_pdu_t *received, const coap_mid_t mid)
Received Pong handler that is used as callback in coap_context_t.
unsigned int coap_context_get_max_idle_sessions(const coap_context_t *context)
Get the maximum idle sessions count.
int coap_can_exit(coap_context_t *context)
Returns 1 if there are no messages to send or to dispatch in the context's queues.
coap_response_t(* coap_response_handler_t)(coap_session_t *session, const coap_pdu_t *sent, const coap_pdu_t *received, const coap_mid_t mid)
Response handler that is used as callback in coap_context_t.
void coap_register_response_handler(coap_context_t *context, coap_response_handler_t handler)
Registers a new message handler that is called whenever a response is received.
void * coap_get_app_data(const coap_context_t *context)
Returns any application-specific data that has been stored with context using the function coap_set_a...
void coap_free_context(coap_context_t *context)
CoAP stack context must be released with coap_free_context().
void coap_context_set_max_handshake_sessions(coap_context_t *context, unsigned int max_handshake_sessions)
Set the maximum number of sessions in (D)TLS handshake value.
int coap_context_get_coap_fd(const coap_context_t *context)
Get the libcoap internal file descriptor for using in an application's select() or returned as an eve...
int coap_handle_event(coap_context_t *context, coap_event_t event, coap_session_t *session)
Invokes the event handler of context for the given event and data.
int coap_context_set_psk(coap_context_t *context, const char *hint, const uint8_t *key, size_t key_len)
Set the context's default PSK hint and/or key for a server.
int coap_mcast_set_hops(coap_session_t *session, size_t hops)
Function interface for defining the hop count (ttl) for sending multicast traffic.
void(* coap_ping_handler_t)(coap_session_t *session, const coap_pdu_t *received, const coap_mid_t mid)
Received Ping handler that is used as callback in coap_context_t.
void coap_ticks(coap_tick_t *)
Returns the current value of an internal tick counter.
int coap_context_set_pki_root_cas(coap_context_t *context, const char *ca_file, const char *ca_dir)
Set the context's default Root CA information for a client or server.
void(* coap_nack_handler_t)(coap_session_t *session, const coap_pdu_t *sent, const coap_nack_reason_t reason, const coap_mid_t mid)
Negative Acknowedge handler that is used as callback in coap_context_t.
COAP_STATIC_INLINE coap_mid_t coap_send_rst(coap_session_t *session, const coap_pdu_t *request)
Sends an RST message with code 0 for the specified request to dst.
coap_context_t * coap_new_context(const coap_address_t *listen_addr)
Creates a new coap_context_t object that will hold the CoAP stack status.
coap_mid_t coap_send_message_type(coap_session_t *session, const coap_pdu_t *request, coap_pdu_type_t type)
Helper function to create and send a message with type (usually ACK or RST).
unsigned int coap_context_get_session_timeout(const coap_context_t *context)
Get the session timeout value.
coap_mid_t coap_send_error(coap_session_t *session, const coap_pdu_t *request, coap_pdu_code_t code, coap_opt_filter_t *opts)
Sends an error response with code code for request request to dst.
int coap_context_set_pki(coap_context_t *context, const coap_dtls_pki_t *setup_data)
Set the context's default PKI information for a server.
void coap_register_ping_handler(coap_context_t *context, coap_ping_handler_t handler)
Registers a new message handler that is called whenever a CoAP Ping message is received.
void coap_register_option(coap_context_t *ctx, uint16_t type)
Registers the option type type with the given context object ctx.
int coap_join_mcast_group_intf(coap_context_t *ctx, const char *groupname, const char *ifname)
Function interface for joining a multicast group for listening for the currently defined endpoints th...
void coap_context_set_max_idle_sessions(coap_context_t *context, unsigned int max_idle_sessions)
Set the maximum idle sessions count.
coap_pdu_t * coap_new_error_response(const coap_pdu_t *request, coap_pdu_code_t code, coap_opt_filter_t *opts)
Creates a new ACK PDU with specified error code.
void coap_context_set_keepalive(coap_context_t *context, unsigned int seconds)
Set the context keepalive timer for sessions.
void coap_set_app_data(coap_context_t *context, void *data)
Stores data with the given CoAP context.
unsigned int coap_context_get_csm_timeout(const coap_context_t *context)
Get the CSM timeout value.
void coap_register_pong_handler(coap_context_t *context, coap_pong_handler_t handler)
Registers a new message handler that is called whenever a CoAP Pong message is received.
coap_mid_t coap_send(coap_session_t *session, coap_pdu_t *pdu)
Sends a CoAP message to given peer.
void coap_register_nack_handler(coap_context_t *context, coap_nack_handler_t handler)
Registers a new message handler that is called whenever a confirmable message (request or response) i...
void coap_context_set_csm_timeout(coap_context_t *context, unsigned int csm_tmeout)
Set the CSM timeout value.
@ COAP_RESPONSE_FAIL
Response not liked - send CoAP RST packet.
@ COAP_RESPONSE_OK
Response is fine.
unsigned int coap_event_t
Scalar type to represent different events, e.g.
int coap_mid_t
coap_mid_t is used to store the CoAP Message ID of a CoAP PDU.
coap_pdu_code_t
Set of codes available for a PDU.
coap_pdu_type_t
CoAP PDU message type definitions.
#define COAP_STATIC_INLINE
COAP_STATIC_INLINE COAP_DEPRECATED unsigned int coap_write(coap_context_t *ctx, coap_socket_t *sockets[], unsigned int max_sockets, unsigned int *num_sockets, coap_tick_t now)
COAP_STATIC_INLINE COAP_DEPRECATED int coap_run_once(coap_context_t *ctx, uint32_t timeout_ms)
COAP_STATIC_INLINE COAP_DEPRECATED void coap_read(coap_context_t *ctx, coap_tick_t now)
Pre-defined constants that reflect defaults for CoAP.
multi-purpose address abstraction
The CoAP stack's global state is stored in a coap_context_t object.
The structure used for defining the PKI setup data to be used.
The structure used for defining the Server PSK setup data to be used.
structure for CoAP PDUs token, if any, follows the fixed size header, then options until payload mark...
Abstraction of virtual session that can be attached to coap_context_t (client) or coap_endpoint_t (se...