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*******
UDP
*******
.. topic:: Introduction
This page describes how to setup the UDP example application
using `Adobe AIR`_, PyAMF and Twisted_.
Adobe AIR >= 2.0 supports `UDP sockets`_, allowing you to send
and receive messages using the Universal Datagram Protocol (UDP).
The example application shows you how to echo a typed object
every x seconds and display the active hardware and software
network interfaces that are available on the client computer.
.. contents::
Download
========
#. Download and install the Adobe AIR runtime_. Also download the
Adobe AIR SDK_ if you want to modify and compile the application.
#. Clone the PyAMF repository with:
.. code-block:: bash
git clone git://github.com/hydralabs/pyamf.git pyamf
cd doc/tutorials/examples/actionscript/udp-example
Alternatively, if you just want to have a look, you can browse_ the example online.
Server
======
**Note**: Make sure you have Twisted_ >= 2.5 installed.
The UDP server for the Adobe Flash Player starts on localhost:55555 when you
launch the `development server`_:
.. code-block:: bash
python server.py
You should see something like::
Registered alias 'org.pyamf.examples.air.udp.vo.HelloWorld' for class 'HelloWorld'
Server started listening on port 55555
Client
======
AIR
---
After you started the server you can simply install the `AIR file`_, launch it and
it will show you're connected to localhost:55555, i.e.:
.. image:: images/udp-overview.png
The server terminal window shows it receiving and echoing back the `HelloWorld`
instances::
Registered alias 'org.pyamf.examples.air.udp.vo.HelloWorld' for class 'HelloWorld'
Server started listening on port 55555
received <HelloWorld msg='UDP message' time=2009-12-28 19:36:53.370000 /> from 192.168.0.3:55554
received <HelloWorld msg='UDP message' time=2009-12-28 19:36:57.418000 /> from 192.168.0.3:55554
received <HelloWorld msg='UDP message' time=2009-12-28 19:37:01.418000 /> from 192.168.0.3:55554
received <HelloWorld msg='UDP message' time=2009-12-28 19:37:05.417000 /> from 192.168.0.3:55554
received <HelloWorld msg='UDP message' time=2009-12-28 19:37:09.417000 /> from 192.168.0.3:55554
Drag the window or resize it by dragging any of the sides or corners:
.. image:: images/udp-resize.png
Right-click for the fullscreen and always on top options:
.. image:: images/udp-options.png
.. _Adobe AIR: http://www.adobe.com/products/air
.. _runtime: http://get.adobe.com/air
.. _SDK: http://www.adobe.com/go/air_sdk
.. _Twisted: http://twistedmatrix.com
.. _UDP sockets: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/DatagramSocket.html
.. _browse: http://github.com/hydralabs/pyamf/tree/master/doc/tutorials/examples/actionscript/udp
.. _development server: http://github.com/hydralabs/pyamf/tree/master/doc/tutorials/examples/actionscript/udp/python/server.py
.. _AIR file: http://github.com/hydralabs/pyamf/tree/master/doc/tutorials/examples/actionscript/udp/air/deploy/udp.air
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