zephyr/samples/net/sockets/coap_server
Robert Lubos eca98e37d4 samples: net: coap_server: Finetune sample parameters
Finetune coap_server sample parameters for better user experience.

Reduce the maximum retransmission count to release resources earilier in
case client is unreachable and no longer responds. Increase the maximum
number of pending retransmissions, along with the heap size (the buffers
for messages are allocated on a heap), to improve sample responsiveness,
in case multiple unreplied messages are pending retransmission.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
2021-09-27 11:36:15 -04:00
..
src samples: net: coap_server: Finetune sample parameters 2021-09-27 11:36:15 -04:00
CMakeLists.txt cmake: increase minimal required version to 3.20.0 2021-08-20 09:47:34 +02:00
README.rst
docker-test.sh
prj.conf samples: net: coap_server: Finetune sample parameters 2021-09-27 11:36:15 -04:00
sample.yaml

README.rst

.. _coap-server-sample:

CoAP Server
###########

Overview
********

This sample is a simple CoAP server showing how to expose a simple resource.

This demo assumes that the platform of choice has networking support,
some adjustments to the configuration may be needed.

The sample will listen for requests in the CoAP UDP port (5683) in the
site-local IPv6 multicast address reserved for CoAP nodes.

The sample exports the following resources:

.. code-block:: none

   /test
   /seg1/seg2/seg3
   /query
   /separate
   /large
   /location-query
   /large-update

These resources allow a good part of the ETSI test cases to be run
against coap-server.

Building And Running
********************

This project has no output in case of success, the correct
functionality can be verified by using some external tool such as tcpdump
or wireshark.

See the `net-tools`_ project for more details

This sample can be built and executed on QEMU or native_posix board as
described in :ref:`networking_with_host`.

Use this command on the host to run the `libcoap`_ implementation of
the ETSI test cases:

.. code-block:: console

   sudo ./examples/etsi_coaptest.sh -i tap0 2001:db8::1

To build the version supporting the TI CC2520 radio, use the supplied
prj_cc2520.conf configuration file enabling IEEE 802.15.4.

.. _`net-tools`: https://github.com/zephyrproject-rtos/net-tools

.. _`libcoap`: https://github.com/obgm/libcoap