| Hi Ian,
I think I mentioned somewhere but I’m using the LinPhone cloud service. I’m also connecting via 4G mobile (ie no Wifi) so there are no NAT servers (at least none that I have control over). I’ve got LinPhone configured using default configuration but if there are any other configurations required to work with the LinPhone cloud based FlexiSip, I’m happy to be educated :).
Cheers Chris
Hi Chris,
I have skimmed through the thread, I did not see you mention if you
are using the linphone.org registration service or a third party
service.
If third party, do they support sending push notifications?
The root issue here is that iPhone (and Android) tries to save as
much power as they possibly can, thus when the phone locks it
suspends all applications running in the background, the reason why
a call works within an hour has to do with
1) The registration timeout on the server
2) Connection keepalive on the NAT routers along the way.
Kind regards
Ian Coetzee
On 2021/10/27 08:40, Chris Jackson
wrote:
I’ve run a number of tests throughout today and this is 100%
repeatable. If I make a call in less than 1 hour, then it will
connect successfully. If I wait just over the hour since the last
registration, then the call will fail. I’ve tested this 6 times
today and it is perfectly repeatable.
So something in the system is falling down and the
registrations / notification system to support re-registration
is not clearly working here.
Chris
I will
try and dig through the logs, but not knowing how this
software works does make it a little difficult to know
what I’m looking for.
I just ran another test where I waited
just over an hour, and it didn’t ring. I then waited
another 20 minutes (so I was sure not to “contaminate”
the logs) and downloaded the log. There was nothing at
all logged at the time I made the call that failed.
You commented earlier that the app
doesn’t care about the time however one thing I do
see though that does indicate there is a time
component is the SIP registration has an expire time
of 1 hour (3600 seconds). I see the registration
when the software starts, but I don’t see this
re-register. Maybe that’s not required as the push
notification system may take care of this? My
understanding is that the LinPhone app should
register with the iPhone notification system to
receive notifications and then it goes to sleep, and
in that respect I would agree that the app should
not care about the time after that. When a call is
made, the SIP server (FlexiSip in this case) should
send a notification to the Apple notification
system, which should wake up the LinPhone app, and
cause it to register with the SIP server to complete
the call, but something isn’t working correctly as
this isn’t happening.
I will try and characterise this further
- making some calls just under 1 hour, and then some
just over 1 hour since registration to see if there
is a stronger pattern than my current "gut feeling".
Cheers
Chris
CSeq: 20 REGISTER
Call-ID: PWJyojzlbE
Max-Forwards: 70
Supported: replaces, outbound, gruu
Accept: application/sdp
Accept: text/plain
Accept:
application/vnd.gsma.rcs-ft-http+xml
Expires: 3600
User-Agent: LinphoneiOS/4.5.0 (xxx)
LinphoneSDK/5.0.0
Content-Length: 0
This is a linphone users list;
your logs don’t end up here (and better they
don’t, as they can be huge and may contain
privacy related information). Homework for
you is to extract the right sniplet from the
logs for discussion here.
On 26 Oct
2021, at 23:29, Chris Jackson <chris@cd-jackson.com>
wrote:
What other details can I provide? I’ve
already provided the debug logs (although
I’m not sure exactly where they go, but
they were emailed to the support team I
guess). I’ll try and find them myself as
well.
Cheers
Chris
On
27/10/2021, at 10:25 AM, German Cancio
<german.cancio@gmail.com>
wrote:
Chris,
Hrm; difficult to deduce what is going
on without more details. The best is
really to enable debug logs and look
into what they contain at the precise
time you miss a call.
Cheers Germán
On 26
Oct 2021, at 23:20, Chris Jackson <chris@cd-jackson.com>
wrote:
For this test I was actually not using
Wifi - the iPhone was on the mobile
network and it was working fine (I was
able to make normal calls). Sorry - I
don’t seem to have mentioned that
point below, but I think I did say
this in the report when I sent in the
logs. So, I can try this using Wifi,
but your suggestion to disable Wifi is
actually what I’ve already done.
Is it really true that time doesn’t
matter? I was recently reading up on
how the push notification registration
works and while I didn’t really go
into all the detail I thought that I
read that there was a need to
re-registration after some period?
Also, it may not be time related -
it’s just my first impression but I’ve
not really characterised this
particularly well as it takes a lot of
time. What I can say is it seems
mostly reliable if I call shortly
after I’ve used the app, and mostly
unreliable if I call when the iPhone
has been sitting idle for a reasonable
period.
Thanks.
Chris
On
27/10/2021, at 10:10 AM, German
Cancio <german.cancio@gmail.com>
wrote:
Chris,
Would that rather look like an issue
with your Wifi connection? The app
on iOS will be sent to rest only
seconds after a call is completed
and the app is sent to background
(e.g. locking the phone); it doesn’t
make any difference to the app
whether a call is received one
minute or one hour after the
previous one - it gets waken up by a
push notification received by iOS
and passed to the app. But your Wifi
connection might be put into dormant
mode by your router, so that push
notification might not make it
through in time for picking up the
call. That’s a quite common problem
that ends up affecting many VoIP
apps.
Try disabling Wifi and see whether
you still have the same issue using
mobile data. If that doesn’t fix the
issue, you could try to enable logs
and look what the app does at the
time of the call.
Germán
On
26 Oct 2021, at 21:17, Chris
Jackson <chris@cd-jackson.com>
wrote:
I’ve been testing out LinPhone,
and while it mostly seems to work
well, notifications of iPhone
calls seems to be unreliable. I
sent some logs recently but
thought I should follow up with a
message here to see if others were
experiencing issues, or if it is
just a problem with my system.
I’ve not characterised this well,
but from a few tests it seems that
longer periods of no use will
result in calls not being
established. It seems that
possibly leaving the iPhone “off”
for an hour (ie not opening any
apps and certainly not opening
LinPhone) will result in calls not
being connected. I might be wrong
as I’ve only tested this a couple
of times and obviously this takes
a lot of time between tests. Calls
made after 30 or 40 minutes of no
use have so far always worked ok
though.
I wonder if this is a known issue
or something that could be a
settings issue in my system? I’m
using the LinPhone cloud FlexiSip
and have not changed any settings
from default in the iPhone app.
Thanks
Chris
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