= Library features =
<abbr title="WikiStart, Sip*, depth=2">TOC</abbr>
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
* Event driven middleware
* Multiple accounts support
* NAT traversal using ICE
* Cross platform
* Multiple media types (Audio, IM, File transfer, Desktop sharing)
SIP transport
* UDP/TCP/TLS transport
* RFC 3263 DNS lookups
* 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 media)
- CANCEL
- MESSAGE
- PUBLISH
- SUBSCRIBE
- NOTIFY
- OPTIONS
Audio
* Disable audio
* Echo cancelation control
* Hold/On-hold
* DTMF
* ICE/STUN
* 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]