Software Candidates Analysis¶

In this phase the existing XMPP libraries will be analyzed and one will be chosen to be used throughout the project.

Requirements¶

• Written in Python (C/C++ could also be used, but a wrapper would need to be written)
• Support for XMPP server and/or component
• Ability to use it with the current model used by SylkServer
  • Green threads
  • Callback based IO

Software Libraries Evaluation¶

The following aspects were considered when evaluating a given library:

• Met requirements stated above
• Is it actively maintained?
• Example use cases
• Deployments in real-world scenarios
• Perceived complexity to integrate it with SylkServer architecture

List on xmpp.org http://xmpp.org/xmpp-software/libraries/

Selected XMPP library¶

After analyzing candidate libraries Wokkel was the chosen one for the following reasons:

• Implemented on top of Twisted, which makes integration with SylkServer straightforward
• Support for both component and XMPP server models, allowing for flexibility in implementation

http://wokkel.ik.nu/

• Plugin architecture, 'subprotocols' implementing different XEPs
• Client and server component support
• XMPP server-to-server support (s2s)
• Designed to be used with Twisted (reactor model)
• Active development

Selected SIP Library¶

SIP SIMPLE SDK http://sipsimpleclient.com used by SylkServer