SIP SIMPLE Client SDK

= Developer guide =

<abbr title="WikiStart, Sip*, depth=2">TOC</abbr>

The main goal of this library is to provide a simple to use API to create real-time communications applications between end-points based on SIP protocol.

To use the library and the concepts described below you must be familiar with Python programming language. Familiarity with SIP and related protocols protocol is not required but having a good understanding of TCP/IP networking and real time application development in general are strongly recommended.

Instructions for installing the library are found [wiki:SipInstallation here].

Middleware

To develop your application you should use the middleware API that hides the complexity and interactions of the lower level SIP, SDP, RTP, ICE, MSRP, XCAP and related protocols. With a minimal amount of coding you can create a client SIP application for setting up audio, instant messaging and desktop sharing sessions.

• [wiki:SipMiddlewareApi Middleware API] - event driven middleware suitable for developing interactive user interfaces
• [wiki:SipSettingsAPI Settings API] - used to reading and writing settings used by the middleware

=== Sample code ===

The middleware API is used by the command line tools used for [wiki:SipTesting testing the library].

Components

To develop your own middleware or application while controlling the underlying lower layers and protocols yourself, you must use the following APIs that provides granular control over their respective components:

• [wiki:SipCoreApiDocumentation SIP core API] - The API for the SIP, SDP, RTP, ICE and audio engine (cross platform sound-card abstraction, codecs)
• [wiki:SipMSRPApi MSRP API] - The API for Message Session Relay Protocol (MSRP) and its relay extension used for instant messaging, file transfers and desktop sharing applications
• [wiki:SipPresenceApi Presence API] - The API for payloads carried within SIP signaling used for publication, subscription and notifications of SIP events
• [wiki:SipXCAPApi XCAP API] - The API for XCAP document manipulation used for storage of buddy lists and presence policy documents