1COAP_INIT(3) libcoap Manual COAP_INIT(3)
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6 coap_init, coap_startup, coap_cleanup - Work with CoAP initialization
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9 #include <coap3/coap.h>
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11 void coap_startup(void);
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13 void coap_cleanup(void);
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15 For specific (D)TLS library support, link with -lcoap-3-notls,
16 -lcoap-3-gnutls, -lcoap-3-openssl, -lcoap-3-mbedtls or
17 -lcoap-3-tinydtls. Otherwise, link with -lcoap-3 to get the default
18 (D)TLS library support.
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21 The CoAP libcoap logic needs to be initialized before there is any use
22 of the libcoap public API. This is done by calling coap_startup().
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25 Function: coap_startup()
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27 The coap_startup() function must be called before any other coap_*()
28 functions are called. It is used to initialize things like mutexes,
29 random number gererators, clocks, TLS libraries etc.
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31 NOTE: This should be called after any other lower layer is initialized.
32 For example, for LwIP, lwip_init() must be called before
33 coap_startup().
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35 NOTE: After the inital call to coap_startup(), subsequent calls are
36 ignored until coap_cleanup() is called.
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38 Function: coap_cleanup()
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40 The coap_cleanup() function is used to cleanup / free any information
41 set up by the coap_startup() function and should be the last coap_*()
42 function called. It is possible to call coap_startup() after
43 coap_cleanup() to re-initialize the libcoap logic.
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45 NOTE: All other libcoap cleanups should called prior to coap_cleanup(),
46 e.g. coap_free_context(3).
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49 See
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51 "RFC7252: The Constrained Application Protocol (CoAP)"
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53 for further information.
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56 Please report bugs on the mailing list for libcoap:
57 libcoap-developers@lists.sourceforge.net or raise an issue on GitHub at
58 https://github.com/obgm/libcoap/issues
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61 The libcoap project <libcoap-developers@lists.sourceforge.net>
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65coap_init 4.3.4 10/09/2023 COAP_INIT(3)