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 href="mailto:bogdan@opensips.org" target="_blank">bogdan@opensips.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<u></u>
<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 href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre><div><div class="h5">
<br>
On 10/21/2012 10:09 AM, Nilanjan Banerjee wrote:
</div></div><blockquote type="cite"><div><div class="h5">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><pre><fieldset></fieldset>
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</blockquote>
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