18 Dec
2019
18 Dec
'19
5:59 a.m.
You are facing the problem the wrong way.
For working with softphones, that must be "wake up", your logic must be like
this:
...
if request goes to a push_client:
hold_request()
send_push_notification()
endif
...
if request(REGISTER) and client is marked as push_client:
if holded_requests():
unhold_request():
endif
endif
...
All the workflow with push_clients, does nothing to do with SST or any other timer
From: "Anuran Barman" <anuranbarman(a)gmail.com>
To: "Patrick Wakano" <pwakano(a)gmail.com>
Cc: "Kamailio (SER) - Users Mailing List" <sr-users(a)lists.kamailio.org>
Sent: Wednesday, December 18, 2019 6:30:16 AM
Subject: Re: [SR-Users] How to reduce re-INVITE time in Kamailio
@ Henning Westerholt
So I loaded the sst.so module and setup the params it said to set like below:
modparam("dialog", "timeout_avp", "$avp(i:10)")
# Set the sst modules timeout_avp to be the same value
modparam("sst", "timeout_avp", "$avp(i:10)")
modparam("sst", "min_se", 10)
and also set the flag in INVITE method in request_route {}
# account only INVITEs
if (is_method("INVITE")) {
setflag(FLT_ACC); # do accounting
setflag(5);
}
and also set the t_set_retr in route {}
route {
dlg_manage();
t_set_retr(10, 0);
if (is_method("BYE")) {
$var(elapsed) = ( $Ts - $dlg(start_ts) );
xlog ("L_INFO", "Completed $dlg(from_uri) to $dlg(to_uri) -
$var(elapsed) duration");
}
}
but still I am getting the INVITE after 57-59 seconds later. How do I do this?
On Wed, Dec 18, 2019 at 9:40 AM Anuran Barman < [ mailto:anuranbarman@gmail.com |
anuranbarman(a)gmail.com ] > wrote:
Thank you all for the detailed information. Let me try both changing the transmission time
and also suspending the invite transaction. That NAT port close did not hit my mind.
Thanks for putting light on that.
On Wed, 18 Dec 2019 at 9:35 AM, Patrick Wakano < [ mailto:pwakano@gmail.com |
pwakano(a)gmail.com ] > wrote:
BQ_BEGIN
As I understood Anuran is after the SIP retransmission timer.
From the description, I think the first INVITE, which I
assume triggers the pushkit voip to IOS stuff, is missed, then (with default timer T1)
after 500ms the first retransmission is done, then after another 500ms you get the 2nd,
then after 1s the 3rd, after 2s the 4th, after 4s the 5th, after 8s the 6th and finally
after 16s the 7th. This is probably why if you wait 10/15s it works, because probably the
5th or 6th retransmission hits your client. If you wait just 5s you can fall under one
window without retransmission (if you miss the 5th you have to wait 8s for the next
retransmission).
You can change the timer T1 in the TM module and hope the
retransmissions do the job for you. It might work but doesn't look safe to me. I have
no idea how this pushkit voip event works, but you may have problems of NAT ports being
closed due to lack of SIP activity, then the INVITE will never reach your destination
anyway.
The way to go seems what David has suggested about suspending the Invite transaction while
your client start-up and register, but I don't know details about this....
Cheers,
Patrick Wakano
On Wed, 18 Dec 2019 at 07:34, Henning Westerholt < [ mailto:hw@skalatan.de |
hw(a)skalatan.de ] > wrote:
BQ_BEGIN
As mentioned, it is more a User agent related topic. But there is a module that provide
related functions in Kamailio:
[ https://kamailio.org/docs/modules/stable/modules/sst.html |
https://kamailio.org/docs/modules/stable/modules/sst.html ]
Cheers,
Henning
Am 17.12.19 um 19:51 schrieb Anuran Barman:
BQ_BEGIN
Thanks for the reply. Sharing doc links of Session timer settings related to Kamailio
specifically will be greatly appreciated.
On Wed, 18 Dec 2019 at 12:18 AM, Yuriy Gorlichenko < [ mailto:ovoshlook@gmail.com |
ovoshlook(a)gmail.com ] > wrote:
BQ_BEGIN
Session-Expires header ( Just remembered right name) will help you
See rfc 4028
[ https://tools.ietf.org/html/rfc4028#page-6 | https://tools.ietf.org/html/rfc4028#page-6
]
On Tue, 17 Dec 2019, 19:44 Yuriy Gorlichenko, < [ mailto:ovoshlook@gmail.com |
ovoshlook(a)gmail.com ] > wrote:
BQ_BEGIN
Hi. It is no a kamailio question but sip question itself. You can manage how often te
invite will be by using session-timers. It will help you to setup time range between
reInvite ir whatever message you will use as keepalive
On Tue, 17 Dec 2019, 19:34 Anuran Barman, < [ mailto:anuranbarman@gmail.com |
anuranbarman(a)gmail.com ] > wrote:
BQ_BEGIN
Hi, I am using Kamailio for my SIP Phone app. My main SIP client is the iOS app. Till now
everything is working fine regarding the calling. But the problem is when the app is
killed I am not able to pick up incoming call. The thing is, when app is killed I am
sending PushKit VOIP message to my ios app to wake it up. App is waking up. But by the
time app is waking up, the original INVITE message got missed up. So according to SIP
protocol it will re-INVITE after some time. Currently if I keep my app open for 10-15 secs
after it wakes up, I am able to get the re-INVITE and everything works fine just as it was
supposed to. But waiting 10-15 sec on the app is not practical in any sense.
So my question is there any way I can reduce the re-INVITE time to like 5/6 seconds so
that as soon as the app open it will wait for 5/6 seconds (practical upto some extent) and
it will get the call ? Or what kamailio is using as the interval time is a SIP standard
and can not be changed? If possible to do so, how can I do that? Please help.
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