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* nua: try to cope if a re-INVITE nor its ACK contain SDP Some SIP user-agents use INVITE without SDP offer to refresh session. By default, NUA sends an offer in 200 OK to such an INVITE and expects an answer back in ACK. Now nua tries to recover from such a Offer/Answer protocol error. Also, if NUTAG_REFRESH_WITHOUT_SDP(1) tag is used, and if the re-INVITE was received without SDP, no SDP offer is sent in 200 OK. Thanks for Anthony Minessale for reporting the problem. git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10829 d0543943-73ff-0310-b7d9-9358b9ac24b2
============================================================= 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.