Pidgin Plug-in for OCS/LCS (Live Communication Server)
Version: 1.5.0pidgin-sipe offers a SIP/Simple protocol implementation for connect to LCS/OCS.
Operating System: Linux
Pidgin (before called Gaim) is a multiprotocol instant messenger for Linux (and other plataforms). SIP is another popular protocol used for VoIP, and it also has an IM (Instant Messenger) analog in the form of SIP/SIMPLE. The SIP/SIMPLE is an open protocol with a documented specification. The Microsoft Live Communication Server (LCS) has support very similar the Sip/Simple protocol (indeed is based 100% on it), but it has non standard especifications classical for a MSN product, is an extend version SIP.
For that, I implemented a Pidgin Plug-in for LCS called SIPE (SIP Exchange). I taked the SIP/Simple implementation developed by Thomas Butter for Pidgin. Thomas had success with the NTLM authentication problem for LCS (at least one part), but I found the LCS SIP especification is very incompatible. The original SIP/Simple code needed a lot changes (broken the original especification). Then I decided to add that support building a Pidgin plug-in called SIPE (SIP Exchange).
Why the LCS? Because this Communications server is extensively used on enterprise environments (like intranets, coorporative subnets, etc) like Novell-wise or Lotus-SameTime. But the most important reason: I need this support for my job, because I (always) use Linux.