58 lines
1.8 KiB
ReStructuredText
58 lines
1.8 KiB
ReStructuredText
.. _networking_api_usage:
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Network Connectivity API
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########################
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Applications can use the connectivity API defined in :file:`net_context.h`
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to create a connection, send or receive data, and close a connection.
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The same API can be used when working with UDP or TCP data.
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The net_context API is similar to the BSD socket API and mapping between these
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two is possible. The main difference between net_context API and BSD socket
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API is that the net_context API uses the fragmented network buffers (net_buf)
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defined in :file:`net/buf.h` and BSD socket API uses linear memory buffers.
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This example creates a simple server that listens to incoming UDP connections
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and sends the received data back. You can downlow the example application
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source file here `connectivity-example-app.c <https://gerrit.zephyrproject.org/r/gitweb?p=zephyr.git;a=blob;f=doc/subsystems/networking/connectivity-example-app.c>`_
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This example application begins with some initialization. (Use this as an
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example; you may need to do things differently in your own application.)
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.. literalinclude:: connectivity-example-app.c
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:linenos:
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:language: c
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:lines: 2-54
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After initialization, first thing application needs to create a context.
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Context is similar to a socket.
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.. literalinclude:: connectivity-example-app.c
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:linenos:
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:language: c
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:lines: 57-66
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Then you need to define the local end point for a connection.
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.. literalinclude:: connectivity-example-app.c
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:linenos:
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:language: c
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:lines: 69-83
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Wait until the connection data is received.
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.. literalinclude:: connectivity-example-app.c
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:linenos:
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:language: c
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:lines: 86-202
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Close the context when finished.
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.. literalinclude:: connectivity-example-app.c
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:linenos:
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:language: c
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:lines: 204-215
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.. toctree::
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:maxdepth: 1
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