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<p>Hello,</p>
<p>I just added a note in the docs that it works only when RR has IP
address in its URI.</p>
<p>The reason is that the IP in RR is compared with source address
in order to see if it is a loop, so if there is no IP in RR, then
it returns false/-1.</p>
<p>It is how the function was designed, if someone wants to make
some alternative, just propose a patch.<br>
</p>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 03.10.18 23:46, Joel Serrano wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAMtXxQmak9M6KLXD0QK-wVoJR-oci6roRQKYNfaA_DTb=fB7Ow@mail.gmail.com">
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<div dir="ltr">I actually had this exact problem, and because I
knew when I was first hop and when not, I ended up adding if
conditions to solve the problem. I would love to know the answer
to this too and the correct reason as to why it happens and how
to correct it.
<div><br>
</div>
<div><br>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Wed, Oct 3, 2018 at 11:34 PM Sergiu Pojoga
<<a href="mailto:pojogas@gmail.com" moz-do-not-send="true">pojogas@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
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<div dir="ltr">Hi ppl,
<div><br>
</div>
<div>If I add a FQDN advertise address to the
listen statement, <i><a
href="https://kamailio.org/docs/modules/4.3.x/modules/siputils.html#siputils.f.is_first_hop"
target="_blank" moz-do-not-send="true">is_first_hop()</a></i>
seems to return FALSE no matter how I play
with the listen and alias settings.</div>
<div><br>
</div>
<div>listen=udp:<a href="http://1.1.1.1:5060"
target="_blank" moz-do-not-send="true">1.1.1.1:5060</a>
advertise <a
href="http://sip.mydomain.net:5060"
target="_blank" moz-do-not-send="true">sip.mydomain.net:5060</a><br>
</div>
<div>alias="<a
href="http://sip.mydomain.net:5060"
target="_blank" moz-do-not-send="true">sip.mydomain.net:5060</a>"<br>
</div>
<div><br>
</div>
<div>This statement doesn't get executed in
the <i>onreply_route</i></div>
<div><br>
</div>
<div><i>onreply_route[MANAGE_REPLY] {</i></div>
</div>
</div>
</div>
</div>
<blockquote style="margin:0px 0px 0px
40px;border:none;padding:0px">
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<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div>
<div><i>if(is_first_hop())</i></div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<blockquote style="margin:0px 0px 0px
40px;border:none;padding:0px">
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<blockquote style="margin:0px 0px 0px
40px;border:none;padding:0px">
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<div>
<div><i>set_contact_alias(); # contact
alias doesn't get set?</i></div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
<div dir="ltr"><i>}</i></div>
<div dir="ltr"><br>
</div>
<div><b>is_first_hop()</b></div>
<div dir="ltr"><i>"The function returns true if the
proxy is first hop after the original sender. For
incoming SIP replies, it means that top
Record-Route URI is 'myself' and source address is
not matching it"</i></div>
<div dir="ltr"><br>
</div>
<div><b>This is the reply.</b></div>
<div dir="ltr">
<div dir="ltr">2018/10/03 17:03:38.276846 <a
href="http://2.2.2.2:62033" target="_blank"
moz-do-not-send="true">2.2.2.2:62033</a> -> <a
href="http://1.1.1.1:5060" target="_blank"
moz-do-not-send="true">1.1.1.1:5060</a></div>
<div dir="ltr">SIP/2.0 200 OK</div>
<div dir="ltr">Via: SIP/2.0/UDP
sip.mydomain.net:5060;branch=z9hG4bK49b3.bfbe15.0;received=1.1.1.1</div>
<div dir="ltr">Via: SIP/2.0/UDP
10.10.10.10:5060;rport=5060;branch=z9hG4bK1af96136</div>
<div dir="ltr"><b>Record-Route</b>: <sip:<a
href="http://sip.mydomain.net" target="_blank"
moz-do-not-send="true">sip.mydomain.net</a>;lr=on;did=4cc.734></div>
<div dir="ltr">Contact: <<a
href="http://sip:888@10.17.0.35:62033"
target="_blank" moz-do-not-send="true">sip:888@10.17.0.35:62033</a>> </div>
<div dir="ltr"><br>
</div>
<div>Suggestions?</div>
<div><br>
</div>
<div>Thanks.</div>
</div>
</div>
</div>
</div>
</div>
_______________________________________________<br>
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moz-do-not-send="true">sr-users@lists.kamailio.org</a><br>
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rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
</blockquote>
</div>
<br>
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<pre wrap="">_______________________________________________
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Kamailio World Conference -- <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a>
Kamailio Advanced Training, Nov 12-14, 2018, in Berlin -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a></pre>
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