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<title>Re-routing to same device in failure_route</title>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>It’s possible that the
Xten softphone detects that the second INVITE is part of a cleared session (the
first INVITE rejected with 400 error), and discards it….<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>G.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>De:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
serusers-bounces@iptel.org [mailto:serusers-bounces@lists.iptel.org] <b><span
style='font-weight:bold'>En nombre de </span></b>Karun Chemudugunta<br>
<b><span style='font-weight:bold'>Enviado el:</span></b> martes, 07 de junio de
2005 18:43<br>
<b><span style='font-weight:bold'>Para:</span></b> serusers@lists.iptel.org<br>
<b><span style='font-weight:bold'>CC:</span></b> serdev@lists.iptel.org<br>
<b><span style='font-weight:bold'>Asunto:</span></b> [Serusers] Re-routing to
same device in failure_route</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Hi
Group,</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
Cisco 5300 -----> SER ----> Xten softphone-A ----> Failed call with
error code >400 -------> try to route to Xten softphone A(same as
previous)</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
I am trying to route calls to softphones in such way that, if call failed by
some reason (>400), trying to route second time to the same soft phone using
append_brach() and t_relay() like below. But, soft phone is unable process
INVITE message for some reason. But, if I forward failed call different
soft phone, call was successful.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Am
I doing any thing wrong in config ???</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Thanks
for your help in advance.</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Regards,</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Karun</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>##########################################################################################</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'># $Id:
ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 andrei Exp $</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
simple quick-start config script</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
----------- global configuration parameters ------------------------</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#debug=9
# debug level (cmd line: -dddddddddd)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#fork=yes</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#log_stderror=no
# (cmd line: -E)</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>/*
Uncomment these lines to enter debugging mode</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>debug=7</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>fork=no</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>log_stderror=yes</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>*/</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>check_via=no
# (cmd. line: -v)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#dns=no
# (cmd. line: -r)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#rev_dns=no
# (cmd. line: -R)</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>dns=no
# (cmd. line: -r)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>rev_dns=no
# (cmd. line: -R)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#port=5060</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#children=4</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>fifo="/tmp/ser_fifo"</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#alias=voip.cafe.bevocal.com</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#alias=66.77.14.238</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>alias=209.233.189.177</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>alias=voice.engca.bevocal.com</span></font>
<o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
------------------ module loading ----------------------------------</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
Uncomment this if you want to use SQL database</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#loadmodule
"/usr/lib/ser/modules/mysql.so"</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/sl.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/tm.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/rr.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/maxfwd.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/usrloc.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/registrar.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/exec.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>loadmodule
"/usr/lib/ser/modules/textops.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#loadmodule
"/usr/lib/ser/modules/acc.so"</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#modparam("acc",
"log_level", 2)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#modparam("acc",
"log_flag", 1)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#modparam("acc",
"report_cancels", 1)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#modparam("acc",
"failed_transactions", 1)</span></font> <o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
Uncomment this if you want digest authentication</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
mysql.so must be loaded !</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#loadmodule
"/usr/lib/ser/modules/auth.so"</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#loadmodule
"/usr/lib/ser/modules/auth_db.so"</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
----------------- setting module-specific parameters ---------------</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
-- usrloc params --</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>modparam("usrloc",
"db_mode", 0)</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
Uncomment this if you want to use SQL database</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'># for
persistent storage and comment the previous line</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#modparam("usrloc",
"db_mode", 2)</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
-- auth params --</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
Uncomment if you are using auth module</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#modparam("auth_db",
"calculate_ha1", yes)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'># If
you set "calculate_ha1" parameter to yes (which true in this config),</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
uncomment also the following parameter)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#modparam("auth_db",
"password_column", "password")</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'># --
rr params --</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'># add
value to ;lr param to make some broken UAs happy</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>modparam("rr",
"enable_full_lr", 1)</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
------------------------- request routing logic -------------------</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>#
main routing logic</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>route{</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# initial sanity checks -- messages with</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# max_forwards==0, or excessively long requests</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (!mf_process_maxfwd_header("10"))</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
{</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
sl_send_reply("483","Too Many Hops");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
break;</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if ( msg:len > max_len ) {</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
sl_send_reply("513", "Message too big");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
break;</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# we record-route all messages -- to make sure that</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# subsequent messages will go through our proxy; that's</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# particularly good if upstream and downstream entities</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# use different transport protocol</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> #
record_route();</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# loose-route processing</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (loose_route()) {</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
t_relay();</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
break;</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# if the request is for other domain use UsrLoc</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# (in case, it does not work, use the following command</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# with proper names and addresses in it)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (uri==myself)</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
{</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (method=="REGISTER")</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
{</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
save("location");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
break;</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if(method=="INVITE")</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
{</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
log(1,"about lookup in route zero");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (!lookup("location")) {</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
log(1,"lookup failed :SIP request from config");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
sl_send_reply("404", "Not Found");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
break;</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
t_on_failure("5");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# forward to current uri now; use stateful forwarding; that</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
# works reliably even if we forward from TCP to UDP</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (!t_relay()) {</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
sl_reply_error();</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>}</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>failure_route[5]
{</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
log(1,"Inside failure_route five");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
revert_uri();</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
append_branch();</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (!lookup("location")) {</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
log(1,"lookup failed :SIP request from config");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
t_reply("404", "Not Found");</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
break;</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
if (!t_relay()) {</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
sl_reply_error();</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>
};</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>}</span></font>
<o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>######################################################################################</span></font>
<o:p></o:p></p>
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