.. _coap-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 <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.
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