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<tt>Hi Nilanjan,<br>
<br>
Check in the trace if :<br>
1) the 200 OK getting back to the caller has 2 RR headers (one
from Proxy and one from LB).<br>
<br>
2) the ACK from caller (before LB) has 2 Route headers, one
pointing to LB, next to Proxy.<br>
<br>
Regards,</tt><br>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<br>
On 11/09/2012 05:01 PM, Nilanjan Banerjee wrote:
<blockquote
cite="mid:CAFbWgu0ZrYXwrqj8qj4UWxqGt7ENJTsxQk4VNRX87KWrf==h8A@mail.gmail.com"
type="cite">Hi Bogdan,<br>
<br>
Thanks a lot for your suggestion and sorry for the delay in
getting back with this...I tried the following configuration as
you have suggested for the Load Balancer and the Proxy: <br>
<br>
______________<br>
Load Balancer: <br>
______________<br>
<br>
route{<br>
if (!mf_process_maxfwd_header("3")) {<br>
sl_send_reply("483","looping");<br>
exit;<br>
}<br>
<br>
if (!has_totag()) {<br>
# initial request<br>
record_route();<br>
} else {<br>
# sequential request -> obey Route indication<br>
loose_route();<br>
t_relay();<br>
exit;<br>
}<br>
<br>
# detect resources and do load balancing<br>
<br>
load_balance("1","sc");<br>
<br>
# LB function returns negative if no suitable destination
(for requested resources) is found,<br>
# or if all destinations are full<br>
if ($retcode<0) {<br>
sl_send_reply("500","Service full");<br>
exit;<br>
}<br>
<br>
xlog("Selected destination is: $du\n");<br>
<br>
# send it out<br>
if (!t_relay()) {<br>
sl_reply_error();<br>
}<br>
}<br>
<br>
______<br>
Proxy<br>
______<br>
<br>
route{<br>
<br>
if (!has_totag()) {<br>
# initial request<br>
record_route();<br>
} else {<br>
# sequential request -> obey Route indication<br>
loose_route();<br>
}<br>
<br>
if (!t_relay()) {<br>
# xlog("L_ERR","sl_reply_error\n");<br>
sl_reply_error();<br>
}<br>
<br>
}<br>
<br>
However, I am still getting the same error - basically the ACK and
the BYE messages are skipping the Proxy and the response to the
BYE is sent to the Proxy. Here are the sample ACK and BYE for the
following setup I am using:<br>
<br>
X.X.X.23:5080 --> X.X.X.206:5060 --> X.X.X.8:5060 -->
X.X.X.5:5070<br>
(sipp UAC) --> (Load Balancer) --> (Proxy)
--> (sipp UAS)<br>
<br>
#<br>
U 2012/11/01 11:19:22.901990 X.X.X.206:5060 -> X.X.X.5:5070<br>
ACK <a class="moz-txt-link-freetext" href="sip:X.X.X.5:5070;transport=UDP">sip:X.X.X.5:5070;transport=UDP</a> SIP/2.0.<br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:X.X.X.206;lr;ftag=31168SIPpTag005;did=9d.087b203"><sip:X.X.X.206;lr;ftag=31168SIPpTag005;did=9d.087b203></a>,<a class="moz-txt-link-rfc2396E" href="sip:X.X.X.8;lr"><sip:X.X.X.8;lr></a>.<br>
Via: SIP/2.0/UDP X.X.X.206;branch=z9hG4bK0112.20fe162.2.<br>
Via: SIP/2.0/UDP X.X.X.23:5080;branch=z9hG4bK-31168-5-5.<br>
From: sipp <a class="moz-txt-link-rfc2396E" href="sip:sipp@X.X.X.23:5080"><sip:sipp@X.X.X.23:5080></a>;tag=31168SIPpTag005.<br>
To: sut <a class="moz-txt-link-rfc2396E" href="sip:service@X.X.X.5:5070"><sip:service@X.X.X.5:5070></a>;tag=30500SIPpTag015.<br>
Call-ID: <a class="moz-txt-link-abbreviated" href="mailto:5-31168@X.X.X.23">5-31168@X.X.X.23</a>.<br>
CSeq: 1 ACK.<br>
Contact: <a class="moz-txt-link-freetext" href="sip:sipp@X.X.X.23:5080">sip:sipp@X.X.X.23:5080</a>.<br>
Max-Forwards: 69.<br>
Subject: Performance Test.<br>
Content-Length: 0.<br>
.<br>
<br>
#<br>
U 2012/11/01 11:19:22.934118 X.X.X.23:5080 -> X.X.X.206:5060<br>
BYE <a class="moz-txt-link-freetext" href="sip:X.X.X.5:5070;transport=UDP">sip:X.X.X.5:5070;transport=UDP</a> SIP/2.0.<br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:X.X.X.206;lr;ftag=31168SIPpTag001;did=0ec.de85e9a"><sip:X.X.X.206;lr;ftag=31168SIPpTag001;did=0ec.de85e9a></a>,<a class="moz-txt-link-rfc2396E" href="sip:X.X.X.8;lr"><sip:X.X.X.8;lr></a>.<br>
Via: SIP/2.0/UDP X.X.X.23:5080;branch=z9hG4bK-31168-1-7.<br>
From: sipp <a class="moz-txt-link-rfc2396E" href="sip:sipp@X.X.X.23:5080"><sip:sipp@X.X.X.23:5080></a>;tag=31168SIPpTag001.<br>
To: sut <a class="moz-txt-link-rfc2396E" href="sip:service@X.X.X.5:5070"><sip:service@X.X.X.5:5070></a>;tag=30500SIPpTag011.<br>
Call-ID: <a class="moz-txt-link-abbreviated" href="mailto:1-31168@X.X.X.23">1-31168@X.X.X.23</a>.<br>
CSeq: 2 BYE.<br>
Contact: <a class="moz-txt-link-freetext" href="sip:sipp@X.X.X.23:5080">sip:sipp@X.X.X.23:5080</a>.<br>
Max-Forwards: 70.<br>
Subject: Performance Test.<br>
Content-Length: 0.<br>
.<br>
<br>
Looks like the loose routing for the messages after the initial
requests is not happening properly according to the Record-Route
header. Not sure, if I am doing things right in the client side
while introducing the Record-Route header - hence attaching the
modified sipp uac and uas I am using. <br>
<br>
Would greatly appreciate your time and help if you could please
throw some light into this matter. <br>
<br>
Thanks,<br>
Nil. <br>
<br>
<br>
<div class="gmail_quote">On Thu, Oct 25, 2012 at 7:30 PM,
Bogdan-Andrei Iancu <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:bogdan@opensips.org"
target="_blank">bogdan@opensips.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> <tt>Hi Nil,<br>
<br>
Seems the problem is in the proxy, where you do not do RR
at all.<br>
<br>
Try <br>
<br>
</tt>____________<br>
<br>
Proxy:<br>
____________<br>
<br>
route{
<div class="im"><br>
if (!has_totag()) {<br>
# initial request<br>
record_route();<br>
} else {<br>
# sequential request -> obey Route
indication<br>
loose_route();<br>
}<br>
<br>
</div>
<div class="im"> if (!t_relay()) {<br>
# xlog("L_ERR","sl_reply_error\n");<br>
sl_reply_error();<br>
}<br>
}<br>
<br>
</div>
<div class="im"><tt><br>
Regards,<br>
</tt>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a moz-do-not-send="true" href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
<br>
</div>
<div>
<div class="h5"> On 10/22/2012 02:25 PM, Nilanjan Banerjee
wrote:
<blockquote type="cite">Thanks Bogdan for taking time to
respond to my post. I think you have guessed it right,
I am using the sample routing script given in the Load
Balancer (LB) tutorial and that is most likely sending
the ACK and BYE messages directly to Client 2
bypassing the Proxy. The routing code snippets I am
using at the LB and the Proxy are shown below. Could
you please tell me what's going wrong over here? I am
using record route support at both the clients.
Alternatively if you could please tell me what should
go in the routing blocks of the LB and the Proxy so
that all the messages go through the LB and the Proxy
then that will be of immense help too. <br>
<br>
Regards,<br>
Nil. <br>
<br>
____________<br>
<br>
Load Balancer:<br>
____________<br>
<br>
route{<br>
if (!mf_process_maxfwd_header("3")) {<br>
sl_send_reply("483","looping");<br>
exit;<br>
}<br>
<br>
if (!has_totag()) {<br>
# initial request<br>
record_route();<br>
} else {<br>
# sequential request -> obey Route
indication<br>
loose_route();<br>
t_relay();<br>
exit;<br>
}<br>
<br>
# detect resources and do balancing<br>
<br>
load_balance("1","sc");<br>
<br>
<br>
# LB function returns negative if no suitable
destination (for requested resources) is found,<br>
# or if all destinations are full<br>
if ($retcode<0) {<br>
sl_send_reply("500","Service full");<br>
exit;<br>
}<br>
<br>
xlog("Selected destination is: $du\n");<br>
<br>
# send it out<br>
if (!t_relay()) {<br>
sl_reply_error();<br>
}<br>
}<br>
<br>
____________<br>
<br>
Proxy:<br>
____________<br>
<br>
route{<br>
record_route();<br>
if (!t_relay()) {<br>
# xlog("L_ERR","sl_reply_error\n");<br>
sl_reply_error();<br>
}<br>
}<br>
<br>
<br>
<div class="gmail_quote">On Sun, Oct 21, 2012 at 7:39
PM, Bogdan-Andrei Iancu <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:bogdan@opensips.org"
target="_blank">bogdan@opensips.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt
0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
204, 204); padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> <tt>Hi
Nil,<br>
<br>
I wild guess is you are not correctly do
"loose_route" on the LB, so instead of
following the Route (to OpenSIPS Proxy), it
goes directly to end destination in RURI
(Client 2).<br>
<br>
Of course, I assume that all parties (LB +
Proxy) do record_route() for the call, right ?<br>
<br>
Regards,<br>
</tt>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a moz-do-not-send="true" href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
<div>
<div> <br>
On 10/21/2012 10:09 AM, Nilanjan Banerjee
wrote: </div>
</div>
<blockquote type="cite">
<div>
<div>Hello,<br>
<br>
I am trying to build the following setup
using OpenSIPS load balancer and the proxy
functionality: <br>
<br>
Client 1 (sipp) <----> OpenSIPS Load
Balancer <----> OpenSIPS Proxy
<----> Client 2 (sipp)<br>
<br>
At the client ends I am using the
following commands:<br>
<br>
Client 1: sipp -sn uac -rsa [Load Balancer
Address] [Client 2 Address]<br>
<br>
Client 2: sipp -sn uas <br>
<br>
The Load Balancer is configured with a
destination as the OpenSIPS Proxy and the
Proxy is configured to simply forward the
SIP messages based on IP address (using
only forward(); in the routing block). <br>
<br>
Now everything (INVITE, OK and ACK
messages) works fine except the BYE
messages that are getting forwarded by the
Load Balancer directly to Client 2 unlike
the INVITE, OK and ACK messages that
traverse the Proxy. Client 2 however,
sends the OK to the BYE to the OpenSIPS
Proxy. Since the BYE messages do not
traverse the Proxy, the OK to the BYE
messages are getting retransmitted
repeatedly by Client 2 and the sessions
are not getting terminated properly. How
do I make the BYE messages to go through
the Proxy or the OK message sent directly
to the Load Balancer so that the
retransmissions do not happen and the
sessions get terminated properly?<br>
<br>
[NB: When the Load Balancer is taken out
of the loop and the Proxy configuration is
kept the same, all the SIP messages
traverses the Proxy and everything works
fine i.e., the BYE and the OKs to the BYEs
are handled properly and sessions get
terminated properly.]<br>
<br>
Would greatly appreciate any help in this
matter. Thanks in advance. <br>
<br>
Nil. </div>
</div>
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