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COAP(7) libcoap Manual COAP(7) NAME coap - Overview of the libcoap library SYNOPSIS Summary of the different libcoap API manual pages. DESCRIPTION libcoap is a C implementation of a lightweight application-protocol for de- vices that are constrained by their resources such as computing power, RF range, memory, bandwidth, or network packet sizes. This protocol, CoAP, is standardized by the IETF as RFC7252. For further information related to CoAP, see http://coap.technology. Documentation for the specific library calls with examples can be found in the man pages referred to in SEE ALSO. Further information can be found in the include header files with example code provided in the examples directory. NOTE: This documentation is a work in progress. Any missing information can be found in the include header files along with example code provided in the examples directory. SEE ALSO coap_address(3), coap_async(3), coap_attribute(3), coap_block(3), coap_cache(3), coap_context(3), coap_deprecated(3), coap_encryption(3), coap_endpoint_client(3), coap_endpoint_server(3), coap_handler(3), coap_init(), coap_io(3), coap_keepalive(3), coap_locking(3), coap_log- ging(3), coap_lwip(3), coap_observe(3), coap_oscore(3), coap_pdu_access(3), coap_pdu_setup(3), coap_persist(3), coap_recovery(3), coap_resource(3), coap_session(3), coap_string(3), coap_tls_library(3), coap_uri(3) and coap_websockets(3) For example executables, see coap-client(5), coap-rd(5) and coap-server(5) For OSCORE configuration, see coap-oscore-conf(5) FURTHER INFORMATION See "RFC7252: The Constrained Application Protocol (CoAP)" "RFC7390: Group Communication for the Constrained Application Protocol (CoAP)" "RFC7641: Observing Resources in the Constrained Application Protocol (CoAP)" "RFC7959: Block-Wise Transfers in the Constrained Application Protocol (CoAP)" "RFC7967: Constrained Application Protocol (CoAP) Option for No Server Re- sponse" "RFC8132: PATCH and FETCH Methods for the Constrained Application Protocol (CoAP)" "RFC8323: CoAP (Constrained Application Protocol) over TCP, TLS, and Web- Sockets" "RFC8516: "Too Many Requests" Response Code for the Constrained Application Protocol" "RFC8613: Object Security for Constrained RESTful Environments (OSCORE)" "RFC8768: Constrained Application Protocol (CoAP) Hop-Limit Option" "RFC8974: Extended Tokens and Stateless Clients in the Constrained Applica- tion Protocol (CoAP)" "RFC9175: CoAP: Echo, Request-Tag, and Token Processing" "RFC9177: Constrained Application Protocol (CoAP) Block-Wise Transfer Op- tions Supporting Robust Transmission" for further information. BUGS Please raise an issue on GitHub at https://github.com/obgm/libcoap/issues to report any bugs. Please raise a Pull Request at https://github.com/obgm/libcoap/pulls for any fixes. AUTHORS The libcoap project <libcoap-developers@lists.sourceforge.net> coap 4.3.5 08/02/2026 COAP(7)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | FURTHER INFORMATION | BUGS | AUTHORS
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