SIP SIMPLE Client SDK

= Library features =

[[TOC(WikiStart, Sip*, depth=2)]]

Additional to a selected lists of SIP features implemented by the underlying PJSIP library and exposes through a Python API, this project implements session based instant messaging (IM), file transfer and multi-party chat sessions using MSRP protocol and its relay extension, publication and subscription for rich presence information such as availability, moods, activities and geo-location, management for presence rules, resource lists, RLS services documents using XCAP protocol.

== General  ==

 * Written in Python language

 * High level event driven middleware API

 * Low level components API

 * Multiple SIP accounts support

 * Multiple active session support

 * Multiple media types per session

 * NAT traversal support (both client side using STUN and ICE and server side using rport and relays)

 * Compatible with functionality of OpenSIPS and OpenXCAP servers

 * Cross platform (Linux, OSX, Windows)

== SIP transport ==

 * UDP/TCP/TLS transports

 * RFC 3263 DNS lookups with fall-over

 * SIP trace

== SDP negotiation ==

Supported media types:

 * Audio (with or without ICE and STUN)

 * Instant messaging over MSRP (with or without MSRP relay support)

 * File transfer over MSRP (with or without MSRP relay support)

 * Desktop sharing (VNC over MSRP)

Except for MSRP file transfer, all media types can be combined together in the same session.

== SIP Methods  ==

 * REGISTER

 * INVITE

 * PRACK

 * ACK

 * BYE

 * re-INVITE (hold/un-hold, adding and removing other media types)

 * CANCEL

 * MESSAGE

 * PUBLISH

 * SUBSCRIBE

 * NOTIFY

 * OPTIONS

== Audio ==

 * Echo cancelation control

 * Hold/On-hold

 * DTMF

 * Codecs: speex (wideband), g711, ilbc, gsm, g722

 * sRTP

== Presence ==

 * Rich presence data model [http://tools.ietf.org/html/rfc3856 RFC3856], [http://tools.ietf.org/html/rfc3863 RFC3863 ], [http://tools.ietf.org/html/rfc4479 RFC4479], [http://tools.ietf.org/html/rfc4481 RFC4481], [http://tools.ietf.org/html/rfc4482 RFC4482], [http://tools.ietf.org/html/rfc5196 RFC5196]

 * Presence watcher-info event package [http://tools.ietf.org/html/rfc3857 RFC3857], [http://tools.ietf.org/html/rfc3858 RFC3858]

 * XCAP protocol [http://www.tools.ietf.org/html/rfc4825 RFC4825]

 * XCAP presence rules [http://www.tools.ietf.org/html/rfc5025 RFC5025]

 * XCAP resource-lists and RLS-services [http://www.tools.ietf.org/html/rfc4826 RFC4826]

 * XCAP PIDF manipulation [http://www.tools.ietf.org/html/rfc4827 RFC4827]

 * XCAP-diff event package [http://www.ietf.org/internet-drafts/draft-ietf-simple-xcap-diff-09.txt draft-ietf-simple-xcap-diff-09]

 * TCP and TLS transports

 * XCAP trace capability

== MSRP ==

 * MSRP protocol [http://tools.ietf.org/html/rfc4975 RFC4975]

 * MSRP protocol relay extension [http://tools.ietf.org/html/rfc4976 RFC4976]

 * MSRP file transfer [http://tools.ietf.org/html/draft-ietf-mmusic-file-transfer-mech-11 draft-ietf-mmusic-file-transfer-mech-11]

 * Message summary event package [http://tools.ietf.org/html/rfc3842 RFC3842]

 * TCP and TLS transports

 * MSRP trace capability

== Conferencing ==

 * Conference event package [http://tools.ietf.org/html/rfc4575 RFC4575]

 * MSRP ad-hoc multi-party chat sessions [http://tools.ietf.org/html/draft-ietf-simple-chat-03 draft-ietf-simple-chat-03]

== Other ==

 * Desktop sharing, variation of [http://tools.ietf.org/html/draft-garcia-mmusic-sdp-collaboration-00 draft-garcia-mmusic-sdp-collaboration-00]

 * Bonjour multicast DNS [http://www.ietf.org/internet-drafts/draft-lee-sip-dns-sd-uri-03.txt draft-lee-sip-dns-sd-uri-03]