Hello John, with which device/iOS/Pjsip have you tested? I have just tested with one iPhone 4 iOS6 and pjsip 2.0. The TCP isn't disconnected after more than 10 min and I can still talk via VoIP. The client is running at the first in the background and later in screen off mode. No USB connected to any power. So no problem here. The only one differenct is the register expire timeout is not 10min, but ca. 1 min for TCP connection. Maybe you can modify the expire time to shorter during an active VoIP call. Regards, Pai On Wed, Oct 31, 2012 at 4:07 PM, John Mah <john at jazinga.com> wrote: > I've been using pjsip in an iOS app and am running into an issue where the > TCP socket used for the SIP command channel gets closed after 5m by the > device when the app is put in the background. (This doesn't happen if the > device is plugged into a power source, btw) For the first 5m of running in > the background though the app works fine and wakes up when data arrives on > the TCP socket. > > Because of this bug I raised the issue with Apple Developer Technical > Support and they basically said that pjsip plays "played fast'n'loose with > the VoIP infrastructure" and that they have seen this before from > developers using pjsip; I think this is because BSD sockets are used > instead of CFStreams to manage the SIP command channel traffic. > > I'm wondering if any other developers have found a work-around or > developed a strategy for shimming CFStreams into the equation? One > suggestion from Apple DTS was to use a socketpair (ie: give pjsip one half > of the pair, and then have a "bridge" data pump that would use the other > half to read/write data to a CFStream). > > cheers, > - John > > ______________________________**_________________ > 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<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/20121031/b5fde746/attachment-0001.html>
