Hi!
You have to use a failure route
(http://kamailio.org/docs/modules/3.3.x/modules/tm.html#t_on_failure).
In the failure route check if the reply code is 404 and if yes, trigger
the APNS logic and then put the call e.g. on a stack and resume e.g.
every second and ofrward to the "SIP server" again to see if the client
is registered meanwhile.
For the asynchronous processing take a look at these functions:
t_suspend(),t_resume()[1]. For example you can call t_resume in a timer
route every second. For the timer route, to know which transactions are
currently suspended and are waiting for further processing, you could
put the transaction identifiers in a message-queue [2] and read the
queue from the timer route.
regards
Klaus
[1] http://kamailio.org/docs/modules/3.3.x/modules_k/tmx.html#id2535968
[2] http://kamailio.org/docs/modules/3.3.x/modules/mqueue.html
On 24.07.2012 06:02, Duong Manh Truong wrote:
Hi list,
My team are developing a SIP client for mobile running iOS ,
then having to deal with the "back ground mode" problem while this soft
is installed on mobiles
One of the solutions is using APNS. (Apple Push Notification Service)
I wanna to use Kamailio as SIP Redirect / Proxy for my current SIP server
The model is like that:
User A <---------> Kamailio <---------> SIP server <--------> User B
IF UserA call UserB, UserB is not available now (not registered yet),
normally, SIP server will reply Kamailio with "404 Not found"
In that case, i want to set up Kamailio do the communication with APNS
and waiting for UserB "Wake up" then RESEND the Invite message ......
(instead of forwarding this 404 message to UserA)
I am getting stuck at how Kamailio can control "404 Not found" message
which it receives from SIP server .
I do searching around several days but still can not get any clearer
points.
Please help me with some instruction/ configuration of Kamailio for this
case !
Thank you very much.
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