zephyr

mirror of https://github.com/zephyrproject-rtos/zephyr synced 2025-09-06 17:41:57 +00:00

History

Jukka Rissanen 86689030e8 net: Clarify logging in networking code Remove network specific default and max log level setting and start to use the zephyr logging values for those. Remove LOG_MODULE_REGISTER() from net_core.h and place the calls into .c files. This is done in order to avoid weird compiler errors in some cases and to make the code look similar as other subsystems. Fixes #11343 Fixes #11659 Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>		2018-12-07 12:00:04 +02:00
..
src	net: Clarify logging in networking code	2018-12-07 12:00:04 +02:00
CMakeLists.txt
prj.conf	net: coap: Move both CoAP implementations into one Kconfig	2018-11-22 09:08:46 -05:00
README.rst
sample.yaml

README.rst

.. _coap-client-sample:

CoAP client
###########

Overview
********

A simple CoAP client showing how to retrieve information from a resource.

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

This sample will make a GET request with path 'test' to the IPv6
multicast address reserved for CoAP nodes, so the URI can be
represented as:

.. code-block:: none

    coap://[ff02::fd]:5683/test

Building and Running
********************

This project will print all the octets of the response received, more context can
be obtained by using a tool like tcpdump or wireshark.

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

It can be built and executed on QEMU as described in :ref:`networking_with_qemu`.

Sample output
=============

.. code-block:: console

  reply: 60 00 00 00 00 24 11 40 fe 80 00 00 00 00 00 00 5c 25 e2 ff fe
  15 01 01 fe 80 00 00 00 00 00 00 5c 25 e2 ff fe 15 01 01 16 33 16 33
  00 24 3d 86 60 40 00 01 ff 54 79 70 65 3a 20 30 0a 43 6f 64 65 3a 20
  31 0a 4d 49 44 3a 20 31 0a (76 bytes)

.. note: The values shown above might differ.

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