25 May
2017
25 May
'17
11:19 a.m.
Hello,
the responses to a request are routed using Via headers. The Contact is to
be used for requests within the dialog.
I am not aware of any method defined by specs to update the Via path for
ongoing transactions -- no traveling with limited available time and I
haven't looked recently at new specs to actually comment more precisely.
A solution could be to send a CANCEL to previous transaction and then
initiate a new INVITE as the device is moving from one IP to another.
Cheers,
Daniel
On Thu, May 25, 2017 at 10:08 AM, Jayesh Nambiar <jayesh1017(a)gmail.com>
wrote:
Hello Alex,
I managed to send the UPDATE method from my endpoint but still the
kamailio is not updating the new contact. The UPDATE method is simply loose
routed from caller-callee when a network change is detected on the client.
Though the UPDATE is relayed and responded back correctly; the subsequent
response still goes to the initial contact address.
Also when the dialog is established; kamailio correctly updates the
contact on Re-Invite but it does not on an UPDATE method.
Anything particular to be done in this case. Thanks.
- Jayesh
On Wed, May 24, 2017 at 3:53 PM, Alex Balashov <abalashov(a)evaristesys.com>
wrote:
--
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Hi Jayesh,
This is the exact purpose of UPDATE - to update the dialog remote target
before the dialog is established.
But of course, properly implementing and following it is up to the
endpoints.
-- Alex
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On May 24, 2017, at 5:46 AM, Jayesh Nambiar
<jayesh1017(a)gmail.com>
wrote:
Hello,
In a user-user based calling on mobile apps, when the call is connected
and the
user moves from a Wifi to Mobile data (network change); the device
sends a Re-Invite with new contact information and subsequent messages go
to appropriate changed contact address.
But when the dialog is in say ringing state; and
the caller moves from
one network to another; what would be an appropriate SIP
method to trigger
the contact update. My problem is generating a Re-INVITE or an UPDATE
before the call is connected is very difficult.
What I tried is sending an in-dialog INFO message
with new contact
address; which gets relayed to the called party and the response
for INFO
is also properly received on the new contact address. But the subsequent
response of the INVITE like a 486 or 200 goes to the original contact only.
What would be the best way to update the contact
address of a client if
I'm maintaining all the dialogs in kamailio.
Thanks,
- Jayesh
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