74 lines
2.1 KiB
ReStructuredText
74 lines
2.1 KiB
ReStructuredText
.. _sockets-echo-client-sample:
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Echo Client
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###########
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Overview
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********
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The echo-client sample application for Zephyr implements a UDP/TCP client
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that will send IPv4 or IPv6 packets, wait for the data to be sent back,
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and then verify it matches the data that was sent.
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This sample is a port of the :ref:`echo-client-sample`. It has been rewritten
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to use socket API instead of native net-app API.
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The source code for this sample application can be found at:
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:file:`samples/net/sockets/echo_client`.
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Requirements
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************
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- :ref:`networking_with_qemu`
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Building and Running
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********************
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There are multiple ways to use this application. One of the most common
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usage scenario is to run echo-client application inside QEMU. This is
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described in :ref:`networking_with_qemu`.
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Build echo-client sample application like this:
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.. zephyr-app-commands::
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:zephyr-app: samples/net/sockets/echo_client
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:board: <board_to_use>
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:goals: build
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:compact:
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``board_to_use`` defaults to ``qemu_x86``. In this case, you can run the
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application in QEMU using ``make run``. If you used another BOARD, you
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will need to consult its documentation for application deployment
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instructions. You can read about Zephyr support for specific boards in
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the documentation at :ref:`boards`.
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Running echo-server in Linux Host
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=================================
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There is one useful testing scenario that can be used with Linux host.
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Here echo-client is run in QEMU and echo-server is run in Linux host.
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To use QEMU for testing, follow the :ref:`networking_with_qemu` guide.
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In a terminal window:
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.. code-block:: console
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$ sudo ./echo-server -i tap0
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Run echo-client application in QEMU:
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.. zephyr-app-commands::
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:zephyr-app: samples/net/sockets/echo_client
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:host-os: unix
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:board: qemu_x86
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:goals: run
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:compact:
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Note that echo-server must be running in the Linux host terminal window
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before you start the echo-client application in QEMU.
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See the :ref:`sockets-echo-server-sample` documentation for an alternate
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way of running, with the echo-client on the Linux host and the echo-server
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in QEMU.
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