NAME¶

coap_init, coap_startup, coap_cleanup - Work with CoAP initialization

SYNOPSIS¶

#include <coap3/coap.h>

void coap_startup(void);

void coap_cleanup(void);

For specific (D)TLS library support, link with -lcoap-3-notls, -lcoap-3-gnutls, -lcoap-3-openssl, -lcoap-3-mbedtls or -lcoap-3-tinydtls. Otherwise, link with -lcoap-3 to get the default (D)TLS library support.

DESCRIPTION¶

The CoAP libcoap logic needs to be initialized before there is any use of the libcoap public API. This is done by calling coap_startup().

FUNCTIONS¶

Function: coap_startup()

The coap_startup() function must be called before any other coap_*() functions are called. It is used to initialize things like mutexes, random number gererators, clocks, TLS libraries etc.

NOTE: This should be called after any other lower layer is initialized. For example, for LwIP, lwip_init() must be called before coap_startup().

NOTE: After the inital call to coap_startup(), subsequent calls are ignored until coap_cleanup() is called.

Function: coap_cleanup()

The coap_cleanup() function is used to cleanup / free any information set up by the coap_startup() function and should be the last coap_*() function called. It is possible to call coap_startup() after coap_cleanup() to re-initialize the libcoap logic.

NOTE: All other libcoap cleanups should called prior to coap_cleanup(), e.g. coap_free_context(3).

FURTHER INFORMATION¶

See

"RFC7252: The Constrained Application Protocol (CoAP)"

for further information.

BUGS¶

Please report bugs on the mailing list for libcoap: libcoap-developers@lists.sourceforge.net or raise an issue on GitHub at https://github.com/obgm/libcoap/issues

AUTHORS¶

The libcoap project <libcoap-developers@lists.sourceforge.net>