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<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a>
OpenSIPS eBootcamp 23rd May - 3rd June 2022
<a class="moz-txt-link-freetext" href="https://opensips.org/training/OpenSIPS_eBootcamp_2022/">https://opensips.org/training/OpenSIPS_eBootcamp_2022/</a></pre>
<div class="moz-cite-prefix">On 5/3/22 12:04 PM, Yury Kirsanov
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAD1_set6Li0A8QXHwYBqw6cC56C1ndy69ED=kYE_VGBnhE43Vw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi Bogdan,
<div>Thanks for clarification, I'll try to monitor this and
analyze it further!</div>
<div><br>
</div>
<div>In regards to 'it simply replace the host:port part of the
contact with the src IP and port from network level' for
example if request is coming from <a
href="http://172.16.22.4:5060" moz-do-not-send="true">172.16.22.4:5060</a>
and Contact is set to 'sip:<a href="http://172.167.22.4:5060"
moz-do-not-send="true">172.167.22.4:5060</a>', would
fix_nated_contact() just replace Contact with the same values?</div>
</div>
</blockquote>
Yes, correct.<br>
<br>
<blockquote type="cite"
cite="mid:CAD1_set6Li0A8QXHwYBqw6cC56C1ndy69ED=kYE_VGBnhE43Vw@mail.gmail.com">
<div dir="ltr">
<div> As it doesn't have any 'received' parameter to replace
this Contact with? Thanks!</div>
</div>
</blockquote>
$avp(received) it is an output of the fix_nated_register() function,
not an input.<br>
<blockquote type="cite"
cite="mid:CAD1_set6Li0A8QXHwYBqw6cC56C1ndy69ED=kYE_VGBnhE43Vw@mail.gmail.com"><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, May 3, 2022 at 6:55 PM
Bogdan-Andrei Iancu <<a href="mailto:bogdan@opensips.org"
moz-do-not-send="true">bogdan@opensips.org</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div> <font face="monospace">See inline</font><br>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="https://www.opensips-solutions.com" target="_blank" moz-do-not-send="true">https://www.opensips-solutions.com</a>
OpenSIPS eBootcamp 23rd May - 3rd June 2022
<a href="https://opensips.org/training/OpenSIPS_eBootcamp_2022/" target="_blank" moz-do-not-send="true">https://opensips.org/training/OpenSIPS_eBootcamp_2022/</a></pre>
<div>On 5/3/22 11:40 AM, Yury Kirsanov wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Bogdan,
<div>Will fix_nated_register() overwrite results of a
fix_nated_contact()?</div>
</div>
</blockquote>
no, use either one, either the other, but not both in the
same time - see the docs for the nathelper module for
details.<br>
<blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>Second question - for 'OPTIONS' where Contact is
available - should fix_nated_contact() replace it with
the correct one?</div>
</div>
</blockquote>
yes, if you relay the OPTIONS<br>
<blockquote type="cite">
<div dir="ltr">
<div> Where exactly does this function take the value to
replace Contact with - from '$avp(received)' param?</div>
</div>
</blockquote>
no, it is taken from the network level, the src IP and port.<br>
<blockquote type="cite">
<div dir="ltr">
<div> So it won't do anything if, for example, OPTIONS
packet comes from my LAN Asterisk server and reaches
the OpenSIPS LAN interface?</div>
</div>
</blockquote>
the fix_nated_xxxX() does not do any testing, it simply
replace the host:port part of the contact with the src IP
and port from network level.<br>
<blockquote type="cite">
<div dir="ltr">
<div> Even though nat_uac_test(7) would confirm a
RFC1918 private address fix_nated_contact() can't do
much in this case, is that correct? </div>
<div><br>
</div>
<div>Thanks a lot for your help!</div>
<div><br>
</div>
<div>Best regards,</div>
<div>Yury.</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, May 3, 2022 at
6:25 PM Bogdan-Andrei Iancu <<a
href="mailto:bogdan@opensips.org" target="_blank"
moz-do-not-send="true">bogdan@opensips.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div> <font face="monospace">Hi Yury,<br>
<br>
For a REGISTER you should use the
fix_nated_register() function.<br>
<br>
Regards,<br>
</font>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="https://www.opensips-solutions.com" target="_blank" moz-do-not-send="true">https://www.opensips-solutions.com</a>
OpenSIPS eBootcamp 23rd May - 3rd June 2022
<a href="https://opensips.org/training/OpenSIPS_eBootcamp_2022/" target="_blank" moz-do-not-send="true">https://opensips.org/training/OpenSIPS_eBootcamp_2022/</a></pre>
<div>On 5/2/22 8:07 PM, Yury Kirsanov wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Bogdan,
<div>No, nothing in OpenSIPS logs,
unfortunately.</div>
<div><br>
</div>
<div>Here's another log, I'm doing
'fix_nated_register' in this case at the
REGISTER route and doing 'fix_nated_contact()'
at the very beginning of my script, just for
the testing purpose.<br>
<br>
May 3 03:00:48 [REGISTER]
[123456->123456] Forwarding REGISTER from
<a href="http://sip:123456@domain.com:5060"
target="_blank" moz-do-not-send="true">sip:123456@domain.com:5060</a>,
requested Expries: 60 to main registrar at
sip:<a href="http://172.16.4.22:5060"
target="_blank" moz-do-not-send="true">172.16.4.22:5060</a>
(84327f479c5d50e1634422f72a0b7619)<br>
May 3 03:00:48 [REPLY]
[123456->123456] REGISTER 401 Unauthorized
FROM <a href="http://172.16.4.22:5060"
target="_blank" moz-do-not-send="true">172.16.4.22:5060</a>
(84327f479c5d50e1634422f72a0b7619)<br>
May 3 03:00:48 [REGISTER]
[123456->123456] Request from
1XX.1XX.1XX.1XX:8001, domain <a
href="http://domain.com" target="_blank"
moz-do-not-send="true">domain.com</a>
(84327f479c5d50e1634422f72a0b7619)<br>
May 3 03:00:48 [REGISTER]
[123456->123456] Forwarding REGISTER from
<a href="http://sip:123456@domain.com:5060"
target="_blank" moz-do-not-send="true">sip:123456@domain.com:5060</a>,
requested Expries: 60 to main registrar at
sip:<a href="http://172.16.4.22:5060"
target="_blank" moz-do-not-send="true">172.16.4.22:5060</a>
(84327f479c5d50e1634422f72a0b7619)<br>
May 3 03:00:48 [REPLY]
[123456->123456] REGISTER 200 OK FROM <a
href="http://172.16.4.22:5060"
target="_blank" moz-do-not-send="true">172.16.4.22:5060</a>
(84327f479c5d50e1634422f72a0b7619)<br>
May 3 03:00:48 [REGREPLY]
[123456->123456] Reply from <a
href="http://172.16.4.22:5060"
target="_blank" moz-do-not-send="true">172.16.4.22:5060</a>,
code is 200 - OK, saving contact
(84327f479c5d50e1634422f72a0b7619)<br>
May 3 03:00:48 [EVENT] Inserting contact <a
href="http://sip:123456@192.168.1.36:8001"
target="_blank" moz-do-not-send="true">sip:123456@192.168.1.36:8001</a>
(569f6c324981335e0b33daf8fc88ed77)<br>
May 3 03:00:51 [OPTIONS] OPTIONS
request from <a
href="http://172.16.4.22:5060"
target="_blank" moz-do-not-send="true">172.16.4.22:5060</a>
to <a
href="http://sip:123456@172.16.4.254:5060"
target="_blank" moz-do-not-send="true">sip:123456@172.16.4.254:5060</a>,
fu is <a moz-do-not-send="true">sip:123456@1XX.1XX.1XX.1XX</a><br>
May 3 03:00:51 [OPTIONS]
[123456->123456] SIP device <a
href="mailto:sip%3A123456@172.16.4.254"
target="_blank" moz-do-not-send="true">sip:123456@172.16.4.254</a>
found, relaying to <a moz-do-not-send="true">sip:1XX.1XX.1XX.1XX:8001</a>
(76f4319976c85e45b2ff916581912550)<br>
</div>
<div><br>
</div>
<div>No errors in OpenSIPS logs. Here's output
of 'opensips-cli -x mi fifo ul_dump':</div>
<div><br>
"AORs": [<br>
{<br>
"AOR": "123456",<br>
"Contacts": [<br>
{<br>
"Contact": "<a
href="http://sip:123456@192.168.1.36:8001"
target="_blank" moz-do-not-send="true">sip:123456@192.168.1.36:8001</a>",<br>
"ContactID":
"3713509073413807284",<br>
"Expires": 47,<br>
"Q": "",<br>
"Callid":
"6_3941098626",<br>
"Cseq": 2,<br>
"User-agent":
"Yealink SIP-T46G 28.83.0.120",<br>
"Received": <a
moz-do-not-send="true">"sip:1XX.1XX.1XX.1XX:8001"</a>,<br>
"State":
"CS_SYNC",<br>
"Flags": 0,<br>
"Cflags": "",<br>
"Socket":
"udp:1XX.1XX.1XX.1XX:5060",<br>
"Methods": 16383<br>
}<br>
]<br>
}<br>
</div>
<div><br>
</div>
<div>Thanks and best regards,</div>
<div>Yury.</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, May 3,
2022 at 12:29 AM Bogdan-Andrei Iancu <<a
href="mailto:bogdan@opensips.org"
target="_blank" moz-do-not-send="true">bogdan@opensips.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div> <font face="monospace">Hi,<br>
<br>
Are there any errors when the "fixing" is
done? The presence of a param should not
impact here.<br>
<br>
Regards,<br>
Bogdan<br>
</font>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="https://www.opensips-solutions.com" target="_blank" moz-do-not-send="true">https://www.opensips-solutions.com</a>
OpenSIPS eBootcamp 23rd May - 3rd June 2022
<a href="https://opensips.org/training/OpenSIPS_eBootcamp_2022/" target="_blank" moz-do-not-send="true">https://opensips.org/training/OpenSIPS_eBootcamp_2022/</a></pre>
<div>On 4/29/22 1:43 PM, Yury Kirsanov
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi,
<div>I'm using OpenSIPS 3.2.4 and
recently run into following issue:</div>
<div><br>
</div>
<div>Imagine simplest proxy setup -
OpenSIPS just accepts new packet, for
example INVITE, changes destination
using 'sethostport(....)' and then
issues 't_relay()' to forward the
packet. Let's ignore replies and so
on.</div>
<div><br>
</div>
<div>If I'm doing a
'fix_nated_contact()' before sending
this packet I'm expecting Contact:
field to be replaced with a source
IP:port as per manual. And this works
if the Contact is in simple form like
'<a
href="http://sip:7777777@192.168.29.106:65033"
target="_blank"
moz-do-not-send="true">sip:7777777@192.168.29.106:65033</a>'.</div>
<div><br>
</div>
<div>But if following Contact comes in
OpenSIPS doesn't change it leaving
private IP in the contact:</div>
<div><br>
</div>
<div>'Contact: <a
moz-do-not-send="true">sip:7777777@192.168.29.106:65033;rinstance=2f59b175103f1088</a>'<br>
</div>
<div><br>
</div>
<div>Can you please let me know why is
that happening? Thanks!<br>
</div>
<div><br>
</div>
<div>Best regards,</div>
<div>Yury.</div>
</div>
<br>
<fieldset></fieldset>
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