1.. zephyr:code-sample:: coap-server
2   :name: CoAP service
3   :relevant-api: coap coap_service
4
5   Use the CoAP server subsystem to register CoAP resources.
6
7Overview
8********
9
10This sample shows how to register CoAP resources to a main CoAP service.
11The CoAP server implementation expects all services and resources to be
12available at compile time, as they are put into dedicated sections.
13
14The resource is placed into the correct linker section based on the owning
15service's name. A linker file is required, see ``sections-ram.ld`` for an example.
16
17This demo assumes that the platform of choice has networking support,
18some adjustments to the configuration may be needed.
19
20The sample will listen for requests in the CoAP UDP port (5683) in the
21site-local IPv6 multicast address reserved for CoAP nodes.
22
23The sample exports the following resources:
24
25.. code-block:: none
26
27   /test
28   /seg1/seg2/seg3
29   /query
30   /separate
31   /large
32   /location-query
33   /large-update
34
35These resources allow a good part of the ETSI test cases to be run
36against coap-server.
37
38Building And Running
39********************
40
41This project has no output in case of success, the correct
42functionality can be verified by using some external tool such as tcpdump
43or wireshark.
44
45See the `net-tools`_ project for more details
46
47This sample can be built and executed on QEMU or native_sim board as
48described in :ref:`networking_with_host`.
49
50Use this command on the host to run the `libcoap`_ implementation of
51the ETSI test cases:
52
53.. code-block:: console
54
55   sudo ./examples/etsi_coaptest.sh -i tap0 2001:db8::1
56
57To build the version supporting the TI CC2520 radio, use the supplied
58prj_cc2520.conf configuration file enabling IEEE 802.15.4.
59
60.. _`net-tools`: https://github.com/zephyrproject-rtos/net-tools
61
62.. _`libcoap`: https://github.com/obgm/libcoap
63
64Wi-Fi
65=====
66
67The IPv4 Wi-Fi support can be enabled in the sample with
68:ref:`Wi-Fi snippet <snippet-wifi-ipv4>`.
69