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Re: [Linphone-users] Repeated "registration failures" with Linphone 1.0.

From: Simon Morlat
Subject: Re: [Linphone-users] Repeated "registration failures" with Linphone 1.0.3 on iOS 4.3.1
Date: Mon, 11 Apr 2011 22:00:50 +0200

Hi Matthew,

Thanks for the reporting this issue with much care and details.
I supposed you are using the service with UDP, not TCP ?

We suspect that during the 4.3.1 the background mode for UDP sockets was
turned off by Apple. Perhaps because it is not that useful. The
consequence *would* be that the SIP socket is broken when the
application is resumed. We are not sure of that however.

I suggest that you disable background operation (in the settings), since
you are apparently not using linphone for incoming calls. In this mode,
the SIP socket is created when linphone shows up, and destroyed when you
press the iPhone button to dismiss the application.

Also, a Linphone upgrade is still pending for review by Apple since a
tenth of days, we hope this version will work better, or at least will
enable easier debugging.

Come back to us if you are still experiencing this issue with the new

Best regards,


Le vendredi 08 avril 2011 à 10:19 -0700, Matthew Bradley a écrit :
> Hi Linphone team,
> I h
> ave been using Linphone 1.0.3 on an iPhone 4 running iOS 4.3 for
> several months. It was working perfectly. I use it when connected to a
> wifi network - home, coffee shop etc to make outgoing calls via a VOIP
> provider -
> A few days ago I upgraded to iOS 4.3.1.
> Since upgrading I find that whenever I switch to Linphone, I usually
> get an error box telling me that "Registration failure SIP server
> unreachable, with a continue button". I tap on continue but usually
> another box pops up multiple times. I've just spent some time trying
> to recreate the problem with the following results:
>       * Turn off wifi, wait, turn on wifi - no errors, connection is
>         fine.
>       * Move out of range of wifi, move back into range of wifi -
>         error message displayed. Tap on continue once or twice.
> Attached is the console from my test when I got the error message; it
> looks like Linphone is streaming the error:
>         socketeXopsip: Reseting timer to 10s before waking up! Could
>         not read
> My usual workaround is to terminate Linphone and restart in, after
> which Linphone has always successfully registered with the SIP
> provider.
> I also have another voip app installed which has tigher integration
> with the VOIP provider (auto login to provider website, display of
> remaining credit), but the call quality is not as good as Linphone nor
> is the user interface - so big thumbs up to Linphone. The other app,
> however, is not suffering from this connection problem.
> The only thing that I am aware of that has changed is the upgrade to
> iOS 4.3.1.
> If you are looking for a tester, I'd be happy to help out. I have an
> iPhone developer licence etc.
> Many thanks in advance,
> Matthew
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> Linphone-users mailing list
> address@hidden

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