<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Hello,</p>
<p>check the spam folder, especially if your email is hosted by some
large/public email provider. Or the email server logs, if it is
selfhosted.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 08.04.20 22:32, Luis Rojas G. wrote:<br>
</div>
<blockquote type="cite"
cite="mid:41f44648-9c4e-6462-cd1e-deac2baa2bde@sixbell.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class="moz-cite-prefix">Hello, Henning,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">No, I am not a member, and so every
time I sent a message I receive the email with :<br>
<br>
"Your message to sr-users awaits moderator approval"<br>
<br>
I didn't receive any confirmation email or anything at all
related to my subscription request.<br>
<br>
Best regards,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Luis<br>
<br>
On 4/8/20 4:20 PM, Henning Westerholt wrote:<br>
</div>
<blockquote type="cite"
cite="mid:VI1PR05MB459023EF06F852CC53986A0FC5C00@VI1PR05MB4590.eurprd05.prod.outlook.com">
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<div class="WordSection1">
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello
Luis,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">I checked in the mailman checked, you seemed
to be not subscribed to the list. Have you received the
confirmation e-mail and confirmed it?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">This is the date and time when you tried to
subscribe:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">Apr 07 23:08:35 2020 (15775) sr-users:
pending Luis Rojas <luis dot rojas at sixbell dot
com> 181.73.XX.XX<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">Henning<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span
style="mso-fareast-language:EN-US" lang="EN-GB">-- <o:p>
</o:p></span></p>
<p class="MsoNormal"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Henning
Westerholt – </span><span
style="mso-fareast-language:EN-US"><a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fskalatan.de%2Fblog%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126725901&sdata=Zsg4%2FKQ1DwqSKDRtU0ZYA9Cl1wjyxGHtJJdLny5zJoU%3D&reserved=0"
originalsrc="https://skalatan.de/blog/"
shash="TE6pDFs+X2bdZMv4rSzSemSw2tdtOj11fS5jJ8S7HPMzcbrxKWzuUszMopHBXCrhZ3OrG26jHdG2ewrl2XfRG86qCZNZPIwjufbilC4/zxjmVA4JPictVjMh2O6+ZunmNzn/6LTkHr/7QQuPZ0l/ODmHe7S0heEYmxTRaQ+ZFfk="
moz-do-not-send="true"><span style="color:#0563C1"
lang="EN-GB">https://skalatan.de/blog/</span></a></span><span
style="mso-fareast-language:EN-US" lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Kamailio
services – </span><span
style="mso-fareast-language:EN-US"><a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgilawa.com%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126735897&sdata=bfk2qFE1tYrgrD5fSNaVctjlT88NyY8DbCcqkIJdEfM%3D&reserved=0"
originalsrc="https://gilawa.com/"
shash="DEb8Tp5QoFJNiWBI/GJQPeigrsT5xrTlHxWyMAuyp3bBuF/w9Y5r7484HZSfsE7BwmQt4yjhUeli5AiYT+DKDM3GNJO3e5uy7Zr/3PLYgow38OOroBmtQy55J5QOwnXiOz/GypGX0p23eTyOMgCujRYt/XkGA+B7tNrTxF2Thsg="
moz-do-not-send="true"><span style="color:#0563C1"
lang="EN-GB">https://gilawa.com</span></a></span><span
style="mso-fareast-language:EN-US"> <span lang="EN-GB"><o:p></o:p></span></span></p>
</div>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:35.4pt"><b>From:</b>
Luis Rojas G. <a class="moz-txt-link-rfc2396E"
href="mailto:luis.rojas@sixbell.com"
moz-do-not-send="true"><luis.rojas@sixbell.com></a>
<br>
<b>Sent:</b> Wednesday, April 8, 2020 10:04 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated"
href="mailto:miconda@gmail.com" moz-do-not-send="true">miconda@gmail.com</a>;
Kamailio (SER) - Users Mailing List <a
class="moz-txt-link-rfc2396E"
href="mailto:sr-users@lists.kamailio.org"
moz-do-not-send="true"><sr-users@lists.kamailio.org></a>;
Henning Westerholt <a class="moz-txt-link-rfc2396E"
href="mailto:hw@skalatan.de" moz-do-not-send="true"><hw@skalatan.de></a><br>
<b>Subject:</b> Re: [SR-Users] Kamailio propagates 180
and 200 OK OUT OF ORDER<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Hello,
Daniel<br>
<br>
I will try this option.<br>
<br>
I tried the ASYNC, using async_ms_sleep, but it seems it's
not allowed in reply_route(). I wonder why. Documentation
only mentions request_route:<br>
<br>
<a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkamailio.org%2Fdocs%2Fmodules%2F5.3.x%2Fmodules%2Fasync.html%23async.f.async_ms_sleep&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126735897&sdata=R8gNq1GqEJe75SCvTO%2FFCbPZKGxhIHX2sSgsheoaxcg%3D&reserved=0"
originalsrc="https://kamailio.org/docs/modules/5.3.x/modules/async.html#async.f.async_ms_sleep"
shash="YUoCN0vAVo8OXMaYETjLNbykJTRnlqw84Inkq2Sh68Y8D9Aim1xLjIzFwx21INMsSK07Sz5/i+Cnb4Etb/o8LBrxEPaRBlRok7JwSEc99pkxHqfXE04xgJQT94vb0pp+64qkwJCOTVIT19i3VBse2P8NtpIhH78IJiPeCffnXuI="
moz-do-not-send="true">https://kamailio.org/docs/modules/5.3.x/modules/async.html#async.f.async_ms_sleep</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">if I use it
in reply_route() kamailio does not even start.<br>
<span style="font-size:10.0pt;font-family:"Courier
New""><br>
<tt> 0(22147) ERROR: <core> [core/cfg.y:3402]:
yyparse(): misused command async_ms_sleep</tt><br>
<tt> 0(22147) CRITICAL: <core> [core/cfg.y:3547]:
yyerror_at(): parse error in config file
/etc/kamailio/kamailio.cfg, line 221, column 23:
Command cannot be used in the block</tt><br>
<br>
<tt>ERROR: bad config file (1 errors)</tt></span><br>
<br>
I wanted to introduce an artificial delay of just a few
miliseconds to 200 OK to INVITE.<br>
<br>
it's not just a problem about 180 and 200, but several
other conditions that will start to appear, like betwen
ACK-Reinvite.<br>
<br>
Anyone reading is the list administrator? I tried to
subscribe to the list, bit it seems I am still not a
member, so I don't receive answers (unless I am copied
directly) and can't post immediately, only after
moderator's approval.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Also, I
can't answer all responses.<br>
<br>
Best regards,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Luis<br>
<br>
On 4/8/20 1:07 PM, Daniel-Constantin Mierla wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p style="margin-left:35.4pt">Hello,<o:p></o:p></p>
<p style="margin-left:35.4pt">you have to keep in mind that
Kamailio is a SIP packet router, not a telephony engine.
If 180 and 200 replies are part of a call is not something
that Kamailio recognize at its core. Its main goal is to
route out as fast as possible what is received, by
executing the configuration file script. Now, a matter of
your configuration file, processing of some SIP messages
can take longer than processing other. And the processing
is done in parallel, a matter of children parameter (and
tcp_children, sctp_children).<o:p></o:p></p>
<p style="margin-left:35.4pt">With that in mind, a way to
try to cope better with the issue you face is to set
route_locks_size parameter, see:<o:p></o:p></p>
<p style="margin-left:35.4pt"> * <a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.kamailio.org%2Fwiki%2Fcookbooks%2Fdevel%2Fcore%23route_locks_size&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126745899&sdata=2rvJhQuycna8JLMYrsl4CRHY3eYD6mk75OidAQvZjqY%3D&reserved=0"
originalsrc="https://www.kamailio.org/wiki/cookbooks/devel/core#route_locks_size"
shash="ipAlWZSACKUE1TH3NKEHscGdhBQqQZsgfPRUmUJbn9AC9O5xkBR3Gz7KV4hbVfuo7jN7D/BydrmmTpWL3PXEicVxdsarm9QGCEnMOUtvNdY1+WIaRe5Mh2zaTbnD+WTbC3ZztzVTh8VY/DYUDD1xoJqrctT09/EBympL/ZZeSEI="
moz-do-not-send="true">
https://www.kamailio.org/wiki/cookbooks/devel/core#route_locks_size</a><o:p></o:p></p>
<p style="margin-left:35.4pt">Probably is what you look for.<o:p></o:p></p>
<p style="margin-left:35.4pt">But if you want more tight
constraints, like when receiving a 180 after a 200ok and
not route it out, you have to make the logic in
configuration file by combining modules such as dialog or
htable (as already suggested).<o:p></o:p></p>
<p style="margin-left:35.4pt">Cheers,<br>
Daniel<o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">On
08.04.20 16:04, Luis Rojas G. wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Hi,
Henning,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">No need
to be ironic. As I mentioned on my first post, I tried
stateful proxy and I observed the same behavior. <br>
<br>
<i>"I tried using stateful proxy and I obtained the
same result."</i><br>
<br>
The asynchronous sleep seems promising. I will look
into it.<br>
<br>
Thanks,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">Luis<br>
<br>
<br>
On 4/8/20 9:30 AM, Henning Westerholt wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US">Hi Luis,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">I
see. Well, you want to use Kamailio as a stateless
proxy, on the other hand it should do things that
are inherently stateful. </span><span
style="font-family:"Segoe UI
Emoji",sans-serif" lang="EN-GB">😉</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">As
mentioned, have a look to the dialog module to track
the state of dialogs that you process. This will not
work in a stateless mode, though. </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">You
can also use the htable module to just store some
data about the processed messages in a shared memory
table and use this to enforce your ordering. There
is also the option to do an asynchronous sleep (with
the async) module on the message that you want to
delay but still processing other messages during it.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Cheers,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Henning</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">--
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Henning
Westerholt – </span><span
style="mso-fareast-language:EN-US"><a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fskalatan.de%2Fblog%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126755895&sdata=sTgS3OE42QH2V75%2FJGHejT1Q%2BKyx1oOCozcNUhdGPe8%3D&reserved=0"
originalsrc="https://skalatan.de/blog/"
shash="bT364eHH1qLzNUNQr1bUWWxxGKB1jVaY7hGrvtqdpp+HIRvcYj8fcgtq/E0oUAMyCQylWBwq5+20T73GCKkk89foxEPN+klz77D3A0mzjakvbC2qpldJJBM23gzp+e9IsGwsrIhvB5nt0wF7rqlhifkSpjHSXIvuRPqsA9WTfAE="
moz-do-not-send="true"><span
style="color:#0563C1" lang="EN-GB">https://skalatan.de/blog/</span></a></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Kamailio
services – </span><span
style="mso-fareast-language:EN-US"><a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgilawa.com%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126755895&sdata=kgTIj%2FQHNV84x5ez8r8SN%2BOCzXz0pMQjdLpLiJ4%2Btvc%3D&reserved=0"
originalsrc="https://gilawa.com/"
shash="n7laAaH/4KlQEzmbQyFzJAoIJzH0THlqdUixTOO6QKLsteFSKsD+mRvoWxBlINOdl4TtaaVA39b9NjoNa/kYOpDnhvwTlIu/BKh99+eJRx7ygiHcldVnleGigZ18ajm+jgW6XPOmwIFfIX8YnCDuqN7RSGP7G4ySjC2+D65+5fo="
moz-do-not-send="true"><span
style="color:#0563C1" lang="EN-GB">https://gilawa.com</span></a>
</span><o:p></o:p></p>
</div>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:70.8pt"><b>From:</b>
Luis Rojas G. <a
href="mailto:luis.rojas@sixbell.com"
moz-do-not-send="true">
<luis.rojas@sixbell.com></a> <br>
<b>Sent:</b> Wednesday, April 8, 2020 3:00 PM<br>
<b>To:</b> Henning Westerholt <a
href="mailto:hw@skalatan.de"
moz-do-not-send="true"><hw@skalatan.de></a>;
Kamailio (SER) - Users Mailing List <a
href="mailto:sr-users@lists.kamailio.org"
moz-do-not-send="true"><sr-users@lists.kamailio.org></a><br>
<b>Subject:</b> Re: [SR-Users] Kamailio propagates
180 and 200 OK OUT OF ORDER<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:70.8pt"> <o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:70.8pt">Hello,
Henning,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:70.8pt"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:70.8pt">I am
worried about this scenario, because it's a symptom
of what may happen in other cases. For instance,
I've seen that this operator usually sends
re-invites immediate after sending ACK. This may
create race conditions like 3.1.5 of RFC5407<br>
<br>
<a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftools.ietf.org%2Fhtml%2Frfc5407%23page-22&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126765886&sdata=fWW3S%2FmlzcitCl2ocmzoHQXY2P%2BK%2BSYqNTM3yLTqX6A%3D&reserved=0"
originalsrc="https://tools.ietf.org/html/rfc5407#page-22"
shash="gOGqztJFGIRYIEAQ7sY2jbHTuzd/UraTAUpOu2O7JE5QNdZOBr3HQE34oWkQ1OEu1Hu5Z1DRtS4zea4pTRHAQ1RD4P35xQ0IlDi4syRjUUDi4z+UY41y3edP1hzxySl/fZWQZvMBftrdY7036KycI/jV/S7lH3VuqcIhXUABCRU="
moz-do-not-send="true">https://tools.ietf.org/html/rfc5407#page-22</a><br>
<br>
I'd understand that one happens because of packet
loss, as it's in UDP's nature, but in this case it
would be artificially created by Kamailio. if there
was no problem at network level (packet loss,
packets following different path on the network and
arriving out of order), why Kamailio creates it? <br>
<br>
I'd expect that the shared memory is used precisely
for this. If an instance of kamailio receives a 200
OK, it could check on the shm and say "hey, another
instance is processing a 180 for this call. Let's
wait for it to finish" (*). I know there could still
be a problem, the instance processing the 180
undergoes a context switch just after it receives
the message, but before writing to shm, but it would
greatly reduce the chance.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:70.8pt"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"
style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:70.8pt">In
our applications we use a SIP stack that always
sends messages to the application in the same order
it receives them, even though is multi-threaded and
messages from the network are received by different
threads. So, they really syncronize between them.
Why Kamailio instances don't?<br>
<br>
I am evaluating kamailio to use it as a dispatcher
to balance load against our several Application
Servers, to present to the operator just a couple of
entrance points to our platform (they don't want to
establish connections to each one of our servers).
This operator is very difficult to deal with. I am
sure they will complain something like "why are you
sending messages out of order? Fix that". The
operator will be able to see traces and check that
messages entered the Kamailio nodes in order and
left out of order. They will not accept it.<br>
<br>
(*) Not really "wait", as it would introduce a delay
in processing all messages. it should be like
putting it on a queue, continue processing other
messages, and go back to the queue later.<br>
<br>
Well, thanks for your answer.<br>
<br>
Luis<br>
<br>
<br>
<br>
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:70.8pt"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:70.8pt"><br>
On 4/8/20 3:01 AM, Henning Westerholt wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US">Hello Luis,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">as
the 1xx responses are usually send unreliable
(unless you use PRACK), you should not make any
assumption on the order or even the arrival of
this messages. It can also happens on a network
level, if send by UDP.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Can
you elaborate why you think this re-ordering is a
problem for you?</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">One
idea to enforce some ordering would be to use the
dialog module in combination with reply routes and
the textops(x) module.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">About
the shared memory question – Kamailio implement
its own memory manager (private memory and shared
memory pool).</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Cheers,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Henning</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">--
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Henning
Westerholt – </span><span
style="mso-fareast-language:EN-US"><a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fskalatan.de%2Fblog%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126775887&sdata=6Ta8j%2FmwY4sj%2FJuJYf3BmOjoLc0GqB3RoJsQkwjX9fE%3D&reserved=0"
originalsrc="https://skalatan.de/blog/"
shash="UjmOTkbvXyRehUEnZYYBjWa2Cj6sJNI3mr+/mOzdmu9iATr79EAbVgsf9efj7BMT+8Fu37LYYIJXoSQyEJFUIlLP0vAC3Loyf2ZCkj8wfRSM1c+HgJClAZjn0jhuf3wu/5x2/TNV8y3EkOivLvY6N1ozxapTHreMmOy0ASGx5nQ="
moz-do-not-send="true"><span
style="color:#0563C1" lang="EN-GB">https://skalatan.de/blog/</span></a></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Kamailio
services – </span><span
style="mso-fareast-language:EN-US"><a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgilawa.com%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126775887&sdata=rKYyhbl6jrbRlumdJ4xo67EVC7%2F%2B6JOnqtaXKxgcNAU%3D&reserved=0"
originalsrc="https://gilawa.com/"
shash="Bg7AKHxDnZC9mDjIFa1xElJE5gIsJb/d2V8UxN6ibQnTTTxDEU0jE9xGtR7x9Ao4G1qwVhCBaVLIKqed/UQz7FPjsBV3hctseoQVUB7a0F5jkfVZFhyyhZmE1XdhPjKTfgftLyJZT9IY+DSRC8EnkXgyVP2QgCTryZPLSzzj8Og="
moz-do-not-send="true"><span
style="color:#0563C1" lang="EN-GB">https://gilawa.com</span></a>
</span><o:p></o:p></p>
</div>
<p class="MsoNormal" style="margin-left:70.8pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:106.2pt"><b>From:</b>
sr-users <a
href="mailto:sr-users-bounces@lists.kamailio.org"
moz-do-not-send="true">
<sr-users-bounces@lists.kamailio.org></a>
<b>On Behalf Of </b>Luis Rojas G.<br>
<b>Sent:</b> Tuesday, April 7, 2020 10:43 PM<br>
<b>To:</b> <a
href="mailto:sr-users@lists.kamailio.org"
moz-do-not-send="true">sr-users@lists.kamailio.org</a><br>
<b>Subject:</b> [SR-Users] Kamailio propagates
180 and 200 OK OUT OF ORDER<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:106.2pt"> <o:p></o:p></p>
<div>
<p style="margin-left:106.2pt">Good day,<o:p></o:p></p>
<p style="margin-left:106.2pt">I am testing the
dispatcher module, using Kamailio as stateless
proxy. I have a pool of UAC (scripts in SIPP) and
a pool of UAS (also scripts in SIPP) for the
destinations. Kamailio version is
kamailio-5.3.3-4.1.x86_64.<o:p></o:p></p>
<p style="margin-left:106.2pt">Problem I have is, if
UAS responds 180 and 200 OK to Invite immediately,
sometimes they are propagated out of order. 200 OK
before 180, like this :<o:p></o:p></p>
<p
style="mso-margin-top-alt:5.0pt;margin-right:0cm;margin-bottom:12.0pt;margin-left:106.2pt"><img
style="width:6.2187in;height:2.177in"
id="_x0000_i1025"
src="cid:part19.F9CD8736.1E1D81CD@gmail.com"
class="" width="597" height="209" border="0"><o:p></o:p></p>
<p style="margin-left:106.2pt">UAS is
172.30.4.195:5061. UAC is 172.30.4.195:5080.
Kamailio is 192.168.253.4:5070<o:p></o:p></p>
<p style="margin-left:106.2pt">Difference between
180 and 200 is just about 50 microseconds. <o:p></o:p></p>
<p style="margin-left:106.2pt">My guess is that both
messages are received by different instances of
Kamailio, and then because of context switches,
even though the 180 is received before, that
process ends after the processing of 200. However,
I had the idea that in order to avoid these
problems the kamailio processes synchronized with
each other using a shared memory. I tried using
stateful proxy and I obtained the same result.<o:p></o:p></p>
<p style="margin-left:106.2pt">By the way, anyone
has any idea about how Kamailio's share memory is
implemented? It clearly does not use the typical
system calls shmget(), shmat(), because they are
not shown by ipcs command.<o:p></o:p></p>
<p style="margin-left:106.2pt">Before posting here I
googled, but I couldn't find anything related to
this. I can't believe I am the only one who ever
had this problem, so I guess I am doing something
wrong...<o:p></o:p></p>
<p style="margin-left:106.2pt">Please, any help. I'm
really stuck on this.<o:p></o:p></p>
<p style="margin-left:106.2pt">Thanks.<o:p></o:p></p>
<pre style="margin-left:106.2pt">-- <o:p></o:p></pre>
</div>
</blockquote>
<p style="margin-left:70.8pt"> <o:p></o:p></p>
<pre style="margin-left:70.8pt">-- <o:p></o:p></pre>
<pre style="margin-left:70.8pt">Luis Rojas<o:p></o:p></pre>
<pre style="margin-left:70.8pt">Software Architect<o:p></o:p></pre>
<pre style="margin-left:70.8pt">Sixbell<o:p></o:p></pre>
<pre style="margin-left:70.8pt">Los Leones 1200<o:p></o:p></pre>
<pre style="margin-left:70.8pt">Providencia<o:p></o:p></pre>
<pre style="margin-left:70.8pt">Santiago, Chile<o:p></o:p></pre>
<pre style="margin-left:70.8pt">Phone: (+56-2) 22001288<o:p></o:p></pre>
<pre style="margin-left:70.8pt"><a href="mailto:luis.rojas@sixbell.com" moz-do-not-send="true">mailto:luis.rojas@sixbell.com</a><o:p></o:p></pre>
<pre style="margin-left:70.8pt"><a href="https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.sixbell.com%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126785882&sdata=b3ZCPZYFoj3MK5yvYyC%2BmaA4TaX79XK6kMgcpKfKeHU%3D&reserved=0" originalsrc="http://www.sixbell.com/" shash="WJW+f+fsMJaznlRpjh8LSzh0O5b4d2K3WvrZiTM3Ol9d5r7Gv2Znpjrl/sz6FMaqu6cp+0xp2htXCHLDM/iGvyP3zCS4noajt1Bd+KJhXJRjzrZvBH2kVMiutTAWOQY+qGlU9FERD+4uIr4XNzcNYWazW+pggi7rfF7zKUguJFs=" moz-do-not-send="true">http://www.sixbell.com</a><o:p></o:p></pre>
</blockquote>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<pre style="margin-left:35.4pt">-- <o:p></o:p></pre>
<pre style="margin-left:35.4pt">Luis Rojas<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Software Architect<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Sixbell<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Los Leones 1200<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Providencia<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Santiago, Chile<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Phone: (+56-2) 22001288<o:p></o:p></pre>
<pre style="margin-left:35.4pt"><a href="mailto:luis.rojas@sixbell.com" moz-do-not-send="true">mailto:luis.rojas@sixbell.com</a><o:p></o:p></pre>
<pre style="margin-left:35.4pt"><a href="https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.sixbell.com%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126785882&sdata=b3ZCPZYFoj3MK5yvYyC%2BmaA4TaX79XK6kMgcpKfKeHU%3D&reserved=0" originalsrc="http://www.sixbell.com/" shash="WJW+f+fsMJaznlRpjh8LSzh0O5b4d2K3WvrZiTM3Ol9d5r7Gv2Znpjrl/sz6FMaqu6cp+0xp2htXCHLDM/iGvyP3zCS4noajt1Bd+KJhXJRjzrZvBH2kVMiutTAWOQY+qGlU9FERD+4uIr4XNzcNYWazW+pggi7rfF7zKUguJFs=" moz-do-not-send="true">http://www.sixbell.com</a><o:p></o:p></pre>
<p class="MsoNormal" style="margin-left:35.4pt"><br>
<br>
<o:p></o:p></p>
<pre style="margin-left:35.4pt">_______________________________________________<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Kamailio (SER) - Users Mailing List<o:p></o:p></pre>
<pre style="margin-left:35.4pt"><a href="mailto:sr-users@lists.kamailio.org" moz-do-not-send="true">sr-users@lists.kamailio.org</a><o:p></o:p></pre>
<pre style="margin-left:35.4pt"><a href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.kamailio.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Fsr-users&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126795873&sdata=vmweOGqIgIj9MuJ3zCFSoQF1AN9dXNk0fhqrZd3yeLk%3D&reserved=0" originalsrc="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" shash="ZdQhqgcJV1APqbvXbn0hQ0t4c1vu2uJhC8H4hdAmyJspmXKRU1ARvEaqgZcX2YQcMfbFpSp9Ka/NrEAswW6qa6QzAETJ7FWyNOKmcyu/qZISWKTGijlg9kFsDdJ+r/uMFY4jPKWlM5ZnW+OTaET7OBZbHt/dhJERJsuqrpdoKlM=" moz-do-not-send="true">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></pre>
</blockquote>
<pre style="margin-left:35.4pt">-- <o:p></o:p></pre>
<pre style="margin-left:35.4pt">Daniel-Constantin Mierla -- <a href="https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.asipto.com%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126805873&sdata=HP7Zo8iF2agQH5hsn8MszA4yvqaBrEmWokb82inWai4%3D&reserved=0" originalsrc="http://www.asipto.com/" shash="I9gvMwipuy4nodYL5sw2+nrPZRTM/gBwcXPPnGf50tXloR41cYN0efhm9oV8ttrUhNC6TnXRHmtV3CP74r4QMAGGymTUc+8wjCtBEdsoqyweWitjQZvYlW85oBDsU2QAZgxYX9uaLfalTh1kge3bizb0Q5R7DXol0sBLKVa6yCo=" moz-do-not-send="true">www.asipto.com</a><o:p></o:p></pre>
<pre style="margin-left:35.4pt"><a href="https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.twitter.com%2Fmiconda&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126805873&sdata=159tYP2tC5GVknpx0MQUcplE1Z7Kz3uGpyd%2Bl4ca3H0%3D&reserved=0" originalsrc="http://www.twitter.com/miconda" shash="zk7J4IbzDeTNBaJnT4A9ci9FUnqo96RkZKaH2+NPpZzcONFRI0mGjlNT/4U4Kf6xCs3yeOPYOgRvWAF22bI+L2QD1XpQLX+3rMHdFODgY1A9OV5wbtXtK+RJ8IEQ8N15WtkjT1QnEG+E8fpOY4XL2impNrMmmgFiN7qo9vubNLI=" moz-do-not-send="true">www.twitter.com/miconda</a> -- <a href="https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.linkedin.com%2Fin%2Fmiconda&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126815864&sdata=xv%2Brl%2FT1sdypV6jZgrSfQ2hcVBg6%2F1AAx1RKopW3c10%3D&reserved=0" originalsrc="http://www.linkedin.com/in/miconda" shash="EEt+q5zGzMD21Z1IDHNDNFzE1zrxVH4axhKwIg6VpJPsGLMuCRqjKzJirt8uhtjuoPsz9ZuKcWiCTw5YhUebEdUR2/0yg20q2j2YcsAZ0aCHobzzV8zN4Ft3TR48gcdXZB7JnhhEwNJ/zUVvTAXaYjLoeJO8Itug+CVOikp5t+E=" moz-do-not-send="true">www.linkedin.com/in/miconda</a><o:p></o:p></pre>
</blockquote>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<pre style="margin-left:35.4pt">-- <o:p></o:p></pre>
<pre style="margin-left:35.4pt">Luis Rojas<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Software Architect<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Sixbell<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Los Leones 1200<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Providencia<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Santiago, Chile<o:p></o:p></pre>
<pre style="margin-left:35.4pt">Phone: (+56-2) 22001288<o:p></o:p></pre>
<pre style="margin-left:35.4pt"><a href="mailto:luis.rojas@sixbell.com" moz-do-not-send="true">mailto:luis.rojas@sixbell.com</a><o:p></o:p></pre>
<pre style="margin-left:35.4pt"><a href="https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.sixbell.com%2F&data=02%7C01%7C%7C0b0a85d5dffe4ac00ffe08d7dbfa3bd7%7Cab4a33c2b5614f798601bc921698ad08%7C0%7C0%7C637219740126825866&sdata=Eue1NN0hWvVc%2BECank%2F6ZomNe2YitlpGQtpCmmSWA6U%3D&reserved=0" originalsrc="http://www.sixbell.com/" shash="cSjfAHMUVTtZ3fDBQ76nT9xOYvD2cDh2ILc1sCOXTN8cfG3l2QXnuW7fdAo1xd2wLcb8IowU6pGZdYDFyP5sWhc4wi+JLy0fKFOdD4z33clFfX1w6UNlpUG/mbg7Q0icX2Q3l7fN4mFpsKD/J16T6vhY1qXkckS4vVnMpwu7LP8=" moz-do-not-send="true">http://www.sixbell.com</a><o:p></o:p></pre>
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<pre class="moz-signature" cols="72">--
Luis Rojas
Software Architect
Sixbell
Los Leones 1200
Providencia
Santiago, Chile
Phone: (+56-2) 22001288
<a class="moz-txt-link-freetext" href="mailto:luis.rojas@sixbell.com" moz-do-not-send="true">mailto:luis.rojas@sixbell.com</a>
<a class="moz-txt-link-freetext" href="http://www.sixbell.com" moz-do-not-send="true">http://www.sixbell.com</a></pre>
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<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></pre>
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