zephyr

History

Michael Scott 2fc554b8fc crypto: config: config-coap: add CONFIG for setting max content length The CoAP samples use an MBEDTLS config "config-coap.h" which could be re-used by the LwM2M sample, except that most servers use a larger maximum content length setting of 1500 bytes. Let's add a CONFIG to set this for users of the CoAP lib and set the CONFIG value for the samples to the 256 size currently used. Signed-off-by: Michael Scott <michael@opensourcefoundries.com>		2017-12-15 17:52:13 -05:00
..
src	kbuild: Removed KBuild	2017-11-08 20:00:22 -05:00
CMakeLists.txt	…
README.rst	…
prj.conf	crypto: config: config-coap: add CONFIG for setting max content length	2017-12-15 17:52:13 -05:00
sample.yaml	tests/samples: fixed yaml syntax	2017-12-11 14:47:08 -05:00

README.rst

.. _coaps-client-sample:

CoAP over DTLS sample client
############################

Overview
********
This sample code shows a CoAP over DTLS client using mbedTLS on top of Zephyr.

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

Follow the steps for testing :ref:`networking_with_qemu`.

Run the server application at samples/net/coaps_server, with the following
command:

.. code-block:: console

	$ make server

In other terminal window, run this client application at samples/net/coaps_client:

.. code-block:: console

	$ make client

You will get the following output:

.. code-block:: console

	reply: 60 45 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
	00 00 00 00 00 (123 bytes)

From the server application directory the screen should display

.. code-block:: console

	*******
	type: 0 code 1 id 1
	*******
	connection was closed gracefully
	done

If the server does not receive the  messages, restart the app and try to connect
the client again.