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Adrian Georgescu, 10/07/2008 09:42 pm

[[Image(htdocs:SIPUA-design-70.png, align=right, link=wiki:SIPUADesign)]]

Project description

PyPjUA is Python software library for [http://pjsip.org PJSIP] C SIP stack that together with an elegant middleware allows for easy development of real-time Internet communications end-points based on [http://tools.ietf.org/html/rfc3261 SIP protocol] with rich presence and IM capability.

The goal of this project is to deliver the best Open Source development kit
for rich featured SIP User Agents, while hiding the complex underlying
functionality behind an easy to use high-level application programming
interface. Compared to other available SIP libraries, this project provides
session based Interactive Messaging (IM) using MSRP protocol, multiple
streams support, 'the missing' SIP-SIMPLE features for rich presence
(presence rules, resource lists, RLS services, RPIDF and XCAP policy).

The software library is tested against the most popular SIP server software available today: [http://opensips.org OpenSER], [http://asterisk.org Asterisk], [http://openxcap.org OpenXCAP], [http://msrprelay.org MSRPRelay] and [http://mediaproxy-ng.org MediaProxy].


The software library and command line tools will be available for download on 2008 Q4 from:

[http://download.ag-projects.com/PyPjUA http://download.ag-projects.com/PyPjUA]

End-user experiences

This software allows you to create elegant real-time communications applications without having to read [http://www.rfc3261.net the +1200 RFC documents] behind it.

''If you read them all, some antidepressant and desintoxication is recommended after this effort.''

As a library with a high-level API, the toolkit can also be used to add SIP and Presence functionality to network devices without a display (like TV set-up boxes), as long as Python environment is supported by such platform. You may collapse the whole telecom industry into a simple ''Call me'' button or expand the presence buddy list to display the mood or blood pressure of your buddies (if they want to share this information with you). Some of the things possible with this library are listed here:

  • VoIP calls using Internet codecs (wide-band Speex, iLBC) and G.711
  • Zero configuration server-less communication over LAN (Bonjour)
  • Parallel forking to multiple SIP devices
  • Presence using SIP SIMPLE (PUBLISH, SUBSCRIBE, NOTIFY and XCAP policy)
  • Interactive Messaging (IM) and File transfer using MSRP protocol
  • Desktop sharing
  • Video calls
Testing the library

Besides the Python software library itself, the repository contains ready to use [wiki:testscripts command-line examples scripts] for Linux and MacOSX that can be used to:

For testing, you can use your own infrastructure or register a free SIP SIMPLE account on [http://sip2sip.info http://SIP2SIP.info]


The software is provided under the [source:LICENSE GPL LICENSE]


We are looking for contributions related to DHT overlay (P2PSIP), desktop sharing, video sessions and real time text using RTP [http://www.ietf.org/rfc/rfc4103.txt ToIP (RFC 4103)].

If you wish to become an active developer of this project, send your request by email to [mailto: ].

SIPSIMPLE-Manual.jpg (4.6 kB) Adrian Georgescu, 04/16/2010 11:27 am

sipsimple-components.png - SIP SIMPLE client components (94 kB) Adrian Georgescu, 01/13/2012 06:12 pm