Did you look this: https://trac.pjsip.org/repos/wiki/IPAddressChange Samuel Le 12/06/12 22:42, Tom Merriewether a ?crit : > I'm implementing a VoIP app on the iPhone and I have a problem with > the teardown and restart of the pjsip library. Specifically, when I > detect that the user has no network connectivity I want to halt the > actions of pjsip SIP send/receive until I detect that a useable > network is available. Then I want to restart the SIP send/receive so > the the SIP sockets will bind to the new interface, say a transition > from Wi-Fi to 3G. I use pjsua_destroy to tear things down. I use the > same function to bring the library back up again. The first time I > bring the library up everything works. Subsequent loads bring the > library up but on receiving an INVITE, I get the error: > > Warning: 399 iPhone-iOS-5 "No suitable codec for remote offer > (PJMEDIA_SDPNEG_NOANSCODEC)" > > It looks like pjsua_destroy deletes/stops/kills the media subsystem. > Nothing in my code explicitly loads or unloads codecs so I'm guessing > its a side effect. > > Question: How do I start/stop pjsip so that I can quiesce SIP traffic > when no network interfaces are available and then bring it back up > when an interface is available .. and do this frequently, reliably, > and cleanly? I'm doing all this because, as far as I can tell, the > library does not do reachability probes and rebind sockets to the > appropriate interface. According to Apple, CFSocketStreams can pass > these events to a callback, but other than mark a TCP socket as VOIP, > the library appears to ignore the streams entirely. > > > I know this is a lot, what I'm really doing is trying to get around > the fact that the iPhone-specific code in the library does not handle > reachability or stream events. > > TIA > > T.M. > > > -- > Thomas Merriewether > Star2Star Communications > > > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120613/6262127d/attachment.html>
