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Hello,<br>
<br>
<div class="moz-cite-prefix">On 11/27/12 4:38 PM, Daniel Tryba
wrote:<br>
</div>
<blockquote cite="mid:201211271638.31561.daniel@pocos.nl"
type="cite">
<pre wrap="">I'm trying to get the MWI indicator on endpoints to work by redirecting the
SUBSCRIBE to the voicemail server (asterisk) using usc_replace_(to|from).
This works fine for the initial request but the next subscribe will fail since
the to/from don't get rewritten, which is indicated by the error:
ERROR: uac [replace.c:250]: decline FROM replacing in sequential request in
auto mode (has TO tag)</pre>
</blockquote>
in auto mode, the From/To will be updated automatically for requests
within dialog. So just relay the subscribe if it has To tag, don't
call the function to update the header.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<blockquote cite="mid:201211271638.31561.daniel@pocos.nl"
type="cite">
<pre wrap="">
This occurs when the modparam "uac","restore_mode" is manual or auto. When set
to none the redirect will be correct but all responses have to be rewritten
manually (I'm a beginner and I don't want to do this just yet). And since uac
has knowledge about this having being rewritten, sending the original from/to
looks like like a bug to me (more probable a misconfiguration/omission of
something crucial withing dialog responses :)
Changes to the (default debian package) config, in route
route[PRESENCE] in if(is_method("SUBSCRIBE"))
if( is_method("SUBSCRIBE"))
{
if(search_hf("Event", "message-summary", "a"))
{
if (!www_authenticate("$fd", "subscriber")) {
www_challenge("$fd", "1");
exit;
}
if(avp_db_query("SELECT value FROM usr_preferences WHERE username='$au'
and attribute='voicemail' ORDER BY value limit 1"))
{
$avp(voicemail)=$avp(i:1);
$avp(subscrfrom)=$fu;
avp_subst("$avp(subscrfrom)", "/<a class="moz-txt-link-freetext" href="sip:.*@/sip:$avp(voicemail)@/">sip:.*@/sip:$avp(voicemail)@/</a>");
uac_replace_from("$avp(subscrfrom)");
uac_replace_to("",<a class="moz-txt-link-rfc2396E" href="sip:$avp(voicemail)@$sel(cfg_get.voicemail.srv_ip):$sel(cfg_get.voicemail.srv_port)">"sip:$avp(voicemail)@$sel(cfg_get.voicemail.srv_ip):
$sel(cfg_get.voicemail.srv_port)"</a>);
remove_hf("Authorization");
$ru = "sip:" + $avp(voicemail) + "@" + $sel(cfg_get.voicemail.srv_ip) +
":" + $sel(cfg_get.voicemail.srv_port);
route(RELAY);
}
}
else
{
handle_subscribe();
t_release();
}
}
exit;
192.168.34.226 is the sip device, 192.168.32.40 kamailio, 192.168.32.41 the
voicemailserver.
Initial request:
U 192.168.34.226:5852 -> 192.168.32.40:5060
SUBSCRIBE <a class="moz-txt-link-freetext" href="sip:grandstream@sip.local">sip:grandstream@sip.local</a> SIP/2.0.
From: "Daniel" <a class="moz-txt-link-rfc2396E" href="sip:grandstream@sip.local"><sip:grandstream@sip.local></a>;tag=67d8f67065827fe2.
To: <a class="moz-txt-link-rfc2396E" href="sip:grandstream@sip.local"><sip:grandstream@sip.local></a>.
Gets rewritten to:
U 192.168.32.40:5060 -> 192.168.32.41:5060
SUBSCRIBE <a class="moz-txt-link-freetext" href="sip:0880100782@192.168.32.41:5060">sip:0880100782@192.168.32.41:5060</a> SIP/2.0.
From: "Daniel" <a class="moz-txt-link-rfc2396E" href="sip:0880100782@sip.local"><sip:0880100782@sip.local></a>;tag=67d8f67065827fe2.
To: <a class="moz-txt-link-rfc2396E" href="sip:0880100782@192.168.32.41:5060"><sip:0880100782@192.168.32.41:5060></a>.
The response gets relayed to the endpoint and MWI will light up since there is
a message.
But next subscribe update from the endpoint triggers the "decline FROM
replacing in sequential request" error and thus the subscribe send to
voicemail is the original to/from:
U 192.168.32.40:5060 -> 192.168.32.41:5060
SUBSCRIBE <a class="moz-txt-link-freetext" href="sip:0880100782@192.168.32.41:5060">sip:0880100782@192.168.32.41:5060</a> SIP/2.0.
From: "Daniel" <a class="moz-txt-link-rfc2396E" href="sip:grandstream@sip.local"><sip:grandstream@sip.local></a>;tag=67d8f67065827fe2.
To: <a class="moz-txt-link-rfc2396E" href="sip:grandstream@sip.local"><sip:grandstream@sip.local></a>;tag=as324de8f3.
Resulting in a 404 since the to/from are not the real peername on the
voicemail server. How do I force Kamailio to rewrite the from/to without doing
this manually for a requests/responses (restore_mode none)? The easy way out
of this problem would be to have a 1 to 1 relation for the Kamailio
subscribers and voicemail peers. But uac_replace should work (somehow).
Attached is a full capture of the subscribe/notify. Running 3.3.2+squeeze from
<a class="moz-txt-link-freetext" href="http://deb.kamailio.org/kamailio/">http://deb.kamailio.org/kamailio/</a>. Machine is also running topoh module
(192.168.0.1).
</pre>
<br>
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<br>
<pre wrap="">_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a></pre>
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