[OpenSIPS-Users] trying to understand the E_DLG_STATE_CHANGED

Tue Sep 19 09:26:26 EDT 2017

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
        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] On Behalf Of Khalil Khamlichi
Sent: Tuesday, September 19, 2017 8:54 AM
To: OpenSIPS users mailling list <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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