22 Jan
2020
22 Jan
'20
5:06 p.m.
Hi,
our scenario is the following: We have two clients registered to our
Kamailio server, one with a TLS capable phone, one via websocket. Now,
when a call comes in, the call is forked and is sent out to both
clients. rtpengine handling is done in the branch route, so there are
two offers, and we use the "via-branch" parameter.
Now, when one branch answers the call, what happens to the other
branch? I there a way to delete the other branch? How and in which
route? Or does Kamailio do this automatically?
I'm happy for a hint.
Regards,
Sebastian
--
Sebastian Damm
Voice Engineer
__________________________________________
sipgate GmbH
22 Jan
22 Jan
5:27 p.m.
On 22/01/2020 11.06, Sebastian Damm wrote:
Hi,
our scenario is the following: We have two clients registered to our
Kamailio server, one with a TLS capable phone, one via websocket. Now,
when a call comes in, the call is forked and is sent out to both
clients. rtpengine handling is done in the branch route, so there are
two offers, and we use the "via-branch" parameter.
Now, when one branch answers the call, what happens to the other
branch? I there a way to delete the other branch? How and in which
route? Or does Kamailio do this automatically?
You do it the same way as you handle an answer: You issue a delete with
the via-branch option.
Cheers
7:15 p.m.
On Wed, 22 Jan 2020 at 18:28, Richard Fuchs <rfuchs(a)sipwise.com> wrote:
On 22/01/2020 11.06, Sebastian Damm wrote:
Doesn't this happen automatically when one uses rtpengine_manage() in the
failure_route?
Hi,
our scenario is the following: We have two clients registered to our
Kamailio server, one with a TLS capable phone, one via websocket. Now,
when a call comes in, the call is forked and is sent out to both
clients. rtpengine handling is done in the branch route, so there are
two offers, and we use the "via-branch" parameter.
Now, when one branch answers the call, what happens to the other
branch? I there a way to delete the other branch? How and in which
route? Or does Kamailio do this automatically?
You do it the same way as you handle an answer: You issue a delete with
the via-branch option.
Cheers
_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
7:18 p.m.
It is. In this case manage = delete
On Wed, 22 Jan 2020, 19:16 George Diamantopoulos, <georgediam(a)gmail.com>
wrote:
On Wed, 22 Jan 2020 at 18:28, Richard Fuchs <rfuchs(a)sipwise.com> wrote:
On 22/01/2020 11.06, Sebastian Damm wrote:
Doesn't this happen automatically when one uses rtpengine_manage() in the
failure_route?
Hi,
our scenario is the following: We have two clients registered to our
Kamailio server, one with a TLS capable phone, one via websocket. Now,
when a call comes in, the call is forked and is sent out to both
clients. rtpengine handling is done in the branch route, so there are
two offers, and we use the "via-branch" parameter.
Now, when one branch answers the call, what happens to the other
branch? I there a way to delete the other branch? How and in which
route? Or does Kamailio do this automatically?
You do it the same way as you handle an answer: You issue a delete with
the via-branch option.
Cheers
_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
7:19 p.m.
On 22/01/2020 13.15, George Diamantopoulos wrote:
On Wed, 22 Jan 2020 at 18:28, Richard Fuchs <rfuchs(a)sipwise.com
<mailto:rfuchs@sipwise.com>> wrote:
On 22/01/2020 11.06, Sebastian Damm wrote:
I would think it does, as long as you supply the via-branch parameter.
Cheers
Hi,
our scenario is the following: We have two clients registered to our
Kamailio server, one with a TLS capable phone, one via
websocket. Now,
when a call comes in, the call is forked and is
sent out to both
clients. rtpengine handling is done in the branch route, so
there are
two offers, and we use the "via-branch"
parameter.
Now, when one branch answers the call, what happens to the other
branch? I there a way to delete the other branch? How and in which
route? Or does Kamailio do this automatically?
You do it the same way as you handle an answer: You issue a delete
with
the via-branch option.
Doesn't this happen automatically when one uses rtpengine_manage() in
the failure_route? 
8:26 p.m.
On 22.01.20 19:19, Richard Fuchs wrote:
On 22/01/2020 13.15, George Diamantopoulos wrote:
A remark for kamailio transaction states point of view: in failure route
the entire transaction is in failed state, so there is not active
branch, so at that point it should delete all (previous) rtpengine
sessions/branches.
Re-routing to a new destinations should go via a branch route where a
new session is initiated in the rtpengine.
As I got it, the use of via-branch flag for deleting a session makes
sense in event route for branch-failure, when other branches can still
be active or one was answered.
Btw, a few questions for further clarifications: if a call has parallel
forking and rtpengine offer is executed for each branch, one is
answered, but the other branch-sessions are not not deleted, what does
rtpengine? It times them out, or keeps them for the duration of the call?
Also in the case of parallel forking, if via-branch is not give to
rtpengine offer command, does the 2nd (and the next) rtpengine offer
command overwrite the previous one, so the rtpengine keeps only the data
from the last one?
Cheers,
Daniel
--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - March 9-11, 2020, Berlin - www.asipto.com
Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.com
On Wed, 22 Jan 2020 at 18:28, Richard Fuchs <rfuchs(a)sipwise.com
<mailto:rfuchs@sipwise.com>> wrote:
On 22/01/2020 11.06, Sebastian Damm wrote:
I would think it does, as long as you supply the via-branch parameter.
Hi,
our scenario is the following: We have two clients registered
to our
Kamailio server, one with a TLS capable phone,
one via
websocket. Now,
when a call comes in, the call is forked and is
sent out to both
clients. rtpengine handling is done in the branch route, so
there are
two offers, and we use the "via-branch"
parameter.
Now, when one branch answers the call, what happens to the other
branch? I there a way to delete the other branch? How and in which
route? Or does Kamailio do this automatically?
You do it the same way as you handle an answer: You issue a
delete with
the via-branch option.
Doesn't this happen automatically when one uses rtpengine_manage() in
the failure_route?
8:39 p.m.
On 22/01/2020 14.26, Daniel-Constantin Mierla wrote:
Btw, a few questions for further clarifications: if a call has
parallel forking and rtpengine offer is executed for each branch, one
is answered, but the other branch-sessions are not not deleted, what
does rtpengine? It times them out, or keeps them for the duration of
the call?
Those branches would remain open. When the call is finished, it will
depend on how the delete is executed: if the delete is done from the
side which branched the call (side A, caller), then the entire call
including other branches are deleted. If the delete is done from the
opposite side (B, one of the branches), the other branches would still
remain open, keeping the entire call alive. The call would then
eventually time out depending on the config, but it might take a while.
Also in the case of parallel forking, if via-branch is not give to
rtpengine offer command, does the 2nd (and the next) rtpengine offer
command overwrite the previous one, so the rtpengine keeps only the
data from the last one?
Correct, with possibly some undesired side effects depending on which
flags were used (e.g codec changes).
Cheers
23 Jan
23 Jan
10:04 a.m.
Hi,
On Wed, Jan 22, 2020 at 8:29 PM Daniel-Constantin Mierla
<miconda(a)gmail.com> wrote:
A remark for kamailio transaction states point of
view: in failure route the entire transaction is in failed state, so there is not active
branch, so at that point it should delete all (previous) rtpengine sessions/branches.
This is what I had in mind. I don't think I end up in failure route if
one branch is answered. My Question was, how to handle the canceled
branch.
As I got it, the use of via-branch flag for deleting a
session makes sense in event route for branch-failure, when other branches can still be
active or one was answered.
Do branches that get cancelled due to another branch answering the
call go through the branch failure route?
Also in the case of parallel forking, if via-branch is
not give to rtpengine offer command, does the 2nd (and the next) rtpengine offer command
overwrite the previous one, so the rtpengine keeps only the data from the last one?
We stumbled upon this problem only because we used rtpengine without
the branch parameter. And what we saw was that the second
rtpengine_offer overwrote the first one, making the first branch
impossible to be answered in certain scenarios.
Regards and thanks for all the answers so far.
Sebastian
--
Sebastian Damm
Voice Engineer
__________________________________________
sipgate GmbH
Gladbacher Straße 74 | 40219 Düsseldorf
24 Jan
24 Jan
4:09 p.m.
On a side note, I think I might have found a bug for rtpengine_manage():
I'm under the impression that if called from within a branch_failure_route,
it will do an offer instead of a delete. Do you confirm and is this
intentional?
On Thu, 23 Jan 2020 at 11:06, Sebastian Damm <damm(a)sipgate.de> wrote:
Hi,
On Wed, Jan 22, 2020 at 8:29 PM Daniel-Constantin Mierla
<miconda(a)gmail.com> wrote:
A remark for kamailio transaction states point of
view: in failure route
the entire transaction is in failed state, so there is not
active branch,
so at that point it should delete all (previous) rtpengine
sessions/branches.
This is what I had in mind. I don't think I end up in failure route if
one branch is answered. My Question was, how to handle the canceled
branch.
As I got it, the use of via-branch flag for
deleting a session makes
sense in event route for branch-failure, when other
branches can still be
active or one was answered.
Do branches that get cancelled due to another branch answering the
call go through the branch failure route?
Also in the case of parallel forking, if
via-branch is not give to
rtpengine offer command, does the 2nd (and the next)
rtpengine offer
command overwrite the previous one, so the rtpengine keeps only the data
from the last one?
We stumbled upon this problem only because we used rtpengine without
the branch parameter. And what we saw was that the second
rtpengine_offer overwrote the first one, making the first branch
impossible to be answered in certain scenarios.
Regards and thanks for all the answers so far.
Sebastian
--
Sebastian Damm
Voice Engineer
__________________________________________
sipgate GmbH
Gladbacher Straße 74 | 40219 Düsseldorf
_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
1575
days inactive
1577
days old
8 comments
5 participants
participants (5)
-
Daniel-Constantin Mierla -
George Diamantopoulos -
Richard Fuchs -
Sebastian Damm -
Yuriy Gorlichenko