Michael Jerris 85c8bcd5ed Merge changes from sofia-sip tree:
Mon Feb 12 21:22:39 EET 2007  Maxim Zaikin <Maxim at amsd.com>
  * su_pthread_port.c: destroying condition variable used when destroying the thread.

Tue Feb 13 01:10:38 EET 2007  kai.vehmanen@nokia.com
  * nua: Ignore CANCEL of incoming request if we have already sent a final response, part 2.

Tue Feb 13 01:02:00 EET 2007  kai.vehmanen@nokia.com
  * nua: Ignore CANCEL of incoming request if we have already sent a final response. Problem reported by Mike Jerris.

nua: fixed problems in state machines.
Pekka Pessi <first.lastname@nokia.com>**20070214201847
   
 These problems are mostly introduced in 1.12.5:
 - assert failed if INVITE was received when calling
   (reported by Michael Jerris)
 - assert failed if nua_invite() was called second time before receiving
   final response to first INVITE (ditto)
 - ACK is now always sent if session was terminated after receiving 2XX
 - if nua has a pending incoming INVITE request, return 491 to
   nua_invite()

nta.c: return 481 response to CANCEL if INVITE transaction was successful
According to the RFC 3261 state diagram the INVITE transaction is destroyed
 immediately when a final 2XX series response is sent. Now nta returns a 481
 response to CANCEL if it finds an INVITE server transaction that was
 responded with a 2XX success response.




git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4284 d0543943-73ff-0310-b7d9-9358b9ac24b2
2007-02-15 05:18:37 +00:00
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=============================================================
README / Sofia-SIP - RFC3261 compliant SIP User-Agent library
=============================================================

Introduction
------------

Sofia-SIP is an open-source SIP User-Agent library, compliant 
with the IETF RFC3261 specification. It can be used as 
a building block for SIP client software for uses such as VoIP, 
IM, and many other real-time and person-to-person communication 
services. The primary target platform for Sofia-SIP is 
GNU/Linux. Sofia-SIP is based on a SIP stack developed at 
the Nokia Research Center. Sofia-SIP is licensed under the LGPL.


Quick start
-----------

Sofia-SIP uses the GNU autotools, so building procedure
is the usual:

sh> sh autogen.sh (if building from darcs)
sh> ./configure
sh> make
sh> make install

See also 'docs/devel_platform_notes.txt' for notes on compiling
Sofia-SIP in different environments.

See the "options-client-example" (available using darcs at
http://sofia-sip.org/repos/options-client-example/ or with CVS as
a module in Sofia-SIP CVS tree) for an example of a small app that
is utilizing Sofia-SIP, and specifically the libsofia-sip-ua
library component.

There are also multiple example clients under
the "sofia-sip/utils" directory:

- sip-options, query using SIP OPTIONS method
- sip-date, SIP date printer/parser

The Sofia-SIP su submodule also provides some small utilities:

- addrinfo (libsofia-sip-ua/su), resolve host names 
- localinfo (libsofia-sip-ua/su), prints information about
  local network interfaces 

References
----------

Project website:
- http://sofia-sip.sourceforge.net
- http://www.sourceforge.net/projects/sofia-sip

Mailing list:
- http://sourceforge.net/mail/?group_id=143636

Version control repositories:
- see the project website (link above)

Licensing
---------

Sofia-SIP is licensed under terms of the GNU LGPL.
See the file "COPYING" for more information.