69 lines
2.0 KiB
ReStructuredText
69 lines
2.0 KiB
ReStructuredText
.. _sockets-http-get:
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Socket HTTP GET Example
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#######################
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Overview
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********
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The sockets/http_get sample application for Zephyr implements a simple
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HTTP GET client using a BSD Sockets compatible API. The purpose of this
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sample is to show how it's possible to develop a sockets application
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portable to both POSIX and Zephyr. As such, it is kept minimal and
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supports only IPv4.
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The source code for this sample application can be found at:
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:file:`samples/net/sockets/http_get`.
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Requirements
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************
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- :ref:`networking_with_qemu`
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- or, a board with hardware networking
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- NAT/routing should be set up to allow connections to the Internet
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- DNS server should be available on the host to resolve domain names
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Building and Running
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********************
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Build the Zephyr version of the application like this:
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.. code-block:: console
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$ cd $ZEPHYR_BASE/samples/net/sockets/http_get
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$ make pristine
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$ make BOARD=<board_to_use>
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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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After the sample starts, it issues HTTP GET request to "google.com:80"
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and dumps the response. You can edit the source code to issue a request
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to any other site on the Internet (or on the local network, in which
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case no NAT/routing setup is needed).
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Running application on POSIX Host
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=================================
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The same application source code can be built for a POSIX system, e.g.
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Linux. (Note: if you look at the source, you will see that the code is
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the same except the header files are different for Zephyr vs POSIX.)
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To build for a host POSIX OS:
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.. code-block:: console
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$ make -f Makefile.posix
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To run:
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.. code-block:: console
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$ ./http_get
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As can be seen, the behavior of the application is the same as the Zephyr
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version.
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