2017-08-28 19:00:35 +08:00
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.. _coap-client-sample:
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2017-04-05 03:00:08 +08:00
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2017-01-21 06:35:14 +08:00
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CoAP client
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###########
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Overview
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********
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2017-10-12 18:22:53 +08:00
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A simple CoAP client showing how to retrieve information from a resource.
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2017-01-21 06:35:14 +08:00
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This demo assumes that the platform of choice has networking support,
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some adjustments to the configuration may be needed.
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This sample will make a GET request with path 'test' to the IPv6
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multicast address reserved for CoAP nodes, so the URI can be
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represented as:
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.. code-block:: none
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coap://[ff02::fd]:5683/test
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Building and Running
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********************
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This project will print all the octets of the response received, more context can
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be obtained by using a tool like tcpdump or wireshark.
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See the `net-tools`_ project for more details.
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2017-11-10 18:25:45 +08:00
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It can be built and executed on QEMU as described in :ref:`networking_with_qemu`.
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2017-01-21 06:35:14 +08:00
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Sample output
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2017-01-31 06:54:22 +08:00
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=============
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2017-01-21 06:35:14 +08:00
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.. code-block:: console
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reply: 60 00 00 00 00 24 11 40 fe 80 00 00 00 00 00 00 5c 25 e2 ff fe
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15 01 01 fe 80 00 00 00 00 00 00 5c 25 e2 ff fe 15 01 01 16 33 16 33
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00 24 3d 86 60 40 00 01 ff 54 79 70 65 3a 20 30 0a 43 6f 64 65 3a 20
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31 0a 4d 49 44 3a 20 31 0a (76 bytes)
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.. note: The values shown above might differ.
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2017-04-29 04:13:53 +08:00
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.. _`net-tools`: https://github.com/zephyrproject-rtos/net-tools
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