[OpenSIPS-Users] trying to understand the E_DLG_STATE_CHANGED
Mundkowsky, Robert
rmundkowsky at ets.org
Tue Sep 19 20:17:51 EDT 2017
Glad your other solution works, but just wanted to mention other approach in case people don’t want to setup and store CDR data. Two more notes, the solution I suggested would be best if you used event listener that is a separate daemon than is subscribed to events rather than polling. Also SIP OK (200) does not always mean a call is established. For example, can be returned after a CANCEL, but I assume you are filtering based on INVITE.
Robert
From: Users [mailto:users-bounces at lists.opensips.org] On Behalf Of Khalil Khamlichi
Sent: Tuesday, September 19, 2017 4:10 PM
To: OpenSIPS users mailling list <users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] trying to understand the E_DLG_STATE_CHANGED
Hi Robert,
Thanks for your idea, the only issue is that it involves polling the server and I don't want to go that path. actually with my solution the results were quite good and precise, the reason is that a 200 OK is always an established call and an E_ACC_CDR is always an end to a successful call and never to another status of a call, and on both places we have access to all dialog variables and/or acc_extra variables.
Again, Thanks for your idea.
On Tue, Sep 19, 2017 at 3:26 PM, Mundkowsky, Robert <rmundkowsky at ets.org<mailto:rmundkowsky at ets.org>> wrote:
Using E_DLG_STATE_CHANGED to keep a count of active dialogs seems reasonable. If you want the callerID, you would use the “hash_id of dialog” and the “b= hash_entry of dialog” to look up the dialog in the table and get more info like the callerid. You use the dlg_list command to look up data in the table. I don’t know if you could do this in the openSIPS config file alone, you likely have to have a script that is called to query the table, parse the data you want, ….
Looks like the key is of the form:
<hash_id>:< hash_entry> like “1527:459551172” below
Example of details from dlg_list:
rmundkowsky: ~$ /export/Apps/opensips/sbin/opensipsctl fifo dlg_list
database engine 'MYSQL' loaded
Control engine 'FIFO' loaded
entering fifo_cmd dlg_list
dialog:: hash=1527:459551172 dialog_id=6558874612164
state:: 3
user_flags:: 0
timestart:: 1505826879
datestart:: 2017-09-19 09:14:39
timeout:: 1505848479
dateout:: 2017-09-19 15:14:39
callid:: 28456fb41ba510f57257de424e73eb4c at XX.XX.XX.XX:5060<mailto:28456fb41ba510f57257de424e73eb4c at XX.XX.XX.XX:5060>
from_uri:: sip:opensips at XX.XXX.XX.XX
to_uri:: sip:7800 at XX.XX.XX.XX:5060
caller_tag:: as7e7bed90
caller_contact:: sip:ZZZ@ XX.XX.XX.XX:5060
callee_cseq:: 0
caller_route_set::
caller_bind_addr:: udp:XX.XX.XX.XX:5060
caller_sdp::
CALLEES::
callee::
callee_tag:: 255851520
callee_contact:: sip:YYY@ XX.XX.XX.XX:5090;transport=udp
caller_cseq:: 102
callee_route_set::
callee_bind_addr:: udp: XX.XX.XX.XX:5060
callee_sdp::
FIFO command was:
:dlg_list:osips_rply_e7e14d04
Robert
From: Users [mailto:users-bounces at lists.opensips.org<mailto:users-bounces at lists.opensips.org>] On Behalf Of Khalil Khamlichi
Sent: Tuesday, September 19, 2017 8:54 AM
To: OpenSIPS users mailling list <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Subject: Re: [OpenSIPS-Users] trying to understand the E_DLG_STATE_CHANGED
Hi Răzvan,
Thanks for your answer.
I ended up using onreply_route and checking if ($rs == "200") to increment connect_calls and then event_route[E_ACC_CDR] to decrement connected_calls.
multiple local tests are giving expected behavior, will need to test on production to confirm though.
Thanks a lot for your help.
On Mon, Sep 18, 2017 at 9:47 AM, Răzvan Crainea <razvan at opensips.org<mailto:razvan at opensips.org>> wrote:
Hi, Khalil!
To be honest, I think this event was initially made to be used with the MI dlg_end_dlg command, which only terminates a dialog. However, you could run 'opensipsctl fifo dlg_list' and match the hash_id and hash_entry against the returned values, and then identify the callid.
If you would also like to receive the callid in the event, please open a feature request[1].
[1] https://github.com/OpenSIPS/opensips/issues<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FOpenSIPS%2Fopensips%2Fissues&data=02%7C01%7Crmundkowsky%40ets.org%7Cf9c8eab9cdfd4fae4aa608d4ff5dedd6%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636414226270892544&sdata=FECgaKsHHG0bJ27vaswQ3Kv8mIs%2B%2FEIWA0BhlexCT5w%3D&reserved=0>
Best regards,
Răzvan Crainea
OpenSIPS Developer
www.opensips-solutions.com<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.opensips-solutions.com&data=02%7C01%7Crmundkowsky%40ets.org%7Cf9c8eab9cdfd4fae4aa608d4ff5dedd6%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636414226270892544&sdata=FfiJVQW07fhERDG5EmsgIAKTnzaXJ5B4Hiq%2BK69mtXk%3D&reserved=0>
On 09/15/2017 10:46 PM, Khalil Khamlichi wrote:
Hi everyone,
I am trying to understand dialog module eventing system.
I have added this route :
event_route[E_DLG_STATE_CHANGED] {
fetch_event_params("$avp(a);$avp(b);$avp(c);$avp(d);$avp(e);$avp(f)");
cache_raw_query("redis:0", "PUBLISH serv1 fetch_event_params=$avp(a),$avp(b),$avp(c),$avp(d),$avp(e),$avp(f)", "$avp(res)");
}
so for each event I can watch an entry
1505503997.413642 [0 127.0.0.1:39734<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2F127.0.0.1%3A39734&data=02%7C01%7Crmundkowsky%40ets.org%7Cf9c8eab9cdfd4fae4aa608d4ff5dedd6%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636414226270892544&sdata=FoTX7qqZpovv0ja%2FlUUhMA7FvyZZOe%2BGTfL3ctrTf4c%3D&reserved=0>] "PUBLISH" "serv1" "fetch_event_params=3917,339471624,1,3,<null>,<null>"
1505503997.524535 [0 127.0.0.1:39762<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2F127.0.0.1%3A39762&data=02%7C01%7Crmundkowsky%40ets.org%7Cf9c8eab9cdfd4fae4aa608d4ff5dedd6%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636414226270892544&sdata=vUKqSbhQPhk1%2BL0RxMbzh9vXBVGVXh0EVc0B2Y3UnQA%3D&reserved=0>] "PUBLISH" "serv1" "fetch_event_params=3917,339471624,3,4,<null>,<null>"
1505504018.809746 [0 127.0.0.1:39840<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2F127.0.0.1%3A39840&data=02%7C01%7Crmundkowsky%40ets.org%7Cf9c8eab9cdfd4fae4aa608d4ff5dedd6%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636414226270892544&sdata=eIDCVWWXFKxhVM7omnhPa%2B4ndAMIMz40F5vei%2F3GwVw%3D&reserved=0>] "PUBLISH" "serv1" "fetch_event_params=3917,339471624,4,5,<null>,<null>"
I understand that
a = hash_id of dialog
b= hash_entry of dialog
c = old_state
d = new_state
e & f = do not exist and here just to prove that they do not exist.
but I don't understand how to use the information of a & b to track dialogs ? if there a function that when fed those parameters gives us callid for example ?
Thanks in advance.
Kkh
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