Hi Frank,
We can use get_dialog_info , but a bit hackish :) - as the search is
based on the values of the dlg vars, not on the callid (unless you go
and add to each dialog a variable containing the callid :) )
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 24.05.2014 02:18, frank fox wrote:
Thank you Bogdan for the reply.
I am wondering if I can use the get_dialog__info somehow to find out
the original Invite (A) is sent back.
I am still investigating if my SIP flow will always keep the contract
(with the VIA header solution).
Is there any other modules or functions that I could possibly use?
Thank you,
Frank
--- Original Message ---
From: "Bogdan-Andrei Iancu" <bog...@opensips.org>
Sent: May 22, 2014 1:06 PM
To: "frank fox" <frankly...@outlook.com>, users@lists.opensips.org
Subject: Re: hairpin and outside of dialog detection
Hello Frank,
Well, the match dialog does not work for this as the second INVITE is
not a sequential request, but an initial one (the dialog wise matching
is done only on the sequential requests).
You can do the check by looking at the IPs in the VIA header, hoping
proxy2 is doing no topo hiding. So, when the call is back to proxy1,
the via[2] ip should belong to itself.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 20.05.2014 21:48, frank fox wrote:
Greetings:
I have a scenario as below:
Proxy-1 ---(A)---> Proxy-2
<----(B)------------
(A) := Initial Invite from proxy-1 to proxy-2
(B) := proxy-2 modifies the $rd and sends the initial Invite back to
proxy-1
Question:
How can the proxy-1 knows that the coming Invite was originally sent
by itself?
It seems the match_dialog() doesn't work for this situation:
dialog:: hash=3514:62628069"7"
state:: 2
user_flags:: 65536
timestart:: 0
timeout:: 0
callid:: a7ab8ff06766fabe1b4846712fba1051@10.242.65.162
<mailto:a7ab8ff06766fabe1b4846712fba1051@10.242.65.162>
from_uri:: sip:19905635611@10.242.65.162
<mailto:sip:19905635611@10.242.65.162>
to_uri:: sip:19905591...@external-sip.vocalocity.com
<mailto:sip:19905591...@external-sip.vocalocity.com>
caller_tag:: 14174341581400528279229
caller_contact:: sip:19905635611@10.242.65.162:5060
<mailto:sip:19905635611@10.242.65.162:5060>
callee_cseq:: 0
caller_route_set::
caller_bind_addr:: udp:10.116.239.217:5060
callee_tag:: 16423468221400528279248
callee_contact::
caller_cseq:: 102
callee_route_set::
callee_bind_addr:: udp:10.116.239.217:5060
dialog:: hash=3514:62628069"8"
state:: 2
user_flags:: 65536
timestart:: 0
timeout:: 0
callid:: a7ab8ff06766fabe1b4846712fba1051@10.242.65.162
<mailto:a7ab8ff06766fabe1b4846712fba1051@10.242.65.162>
from_uri:: sip:19905635611@10.242.65.162
<mailto:sip:19905635611@10.242.65.162>
to_uri:: sip:19905591...@external-sip.vocalocity.com
<mailto:sip:19905591...@external-sip.vocalocity.com>
caller_tag:: 14174341581400528279229
caller_contact::
callee_cseq:: 0
caller_route_set::
caller_bind_addr:: udp:10.116.239.217:5060
callee_tag:: 16423468221400528279248
callee_contact::
caller_cseq:: 102
callee_route_set::
callee_bind_addr:: udp:10.116.239.217:5060
Regards,
Frank
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