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Hello,<br>
<br>
received is added because the client requests that via rport
parameter or because of using rport. If the processed request is
REGISTER, you can try removing rport/received parameters from Via,
then do msg_apply_changes().<br>
<br>
However, without rport enforcement, the response might not be routed
back, because SIP says to send it back to the address in Via, which
is invalid in websocket case.<br>
<br>
Maybe you can rewrite headers in nginx or use kamailio as a
proxy/load balancer instead of nginx and then you have plenty of
options to play with sip headers.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 06/10/14 02:39, Gonzalo Gasca wrote:<br>
</div>
<blockquote
cite="mid:CAL+DTgJJA0+ZgCu41ER8v6cd5FOzT=wcJ4pH3BdEsE8R6RGdjQ@mail.gmail.com"
type="cite">
<pre wrap="">I'm using Kamailio as SIP Registrar using Websockets.
My topology looks like this:
Sip client (sipml5) ---> wss ---> Nginx ---> ws ---> Kamailio 4.1.5
When I look into my SipMl5 application in the Register Message 200 OK
from Kamailio I see the Nginx private IP address 172.31.22.2
Via: SIP/2.0/WSS
df7jal23ls0d.invalid;rport=37111;received=172.31.22.2;branch=z9hG4bKtv75otkzmPVsdNWevweLt4TN9JnLnQ0p
How can I remove private IP Address in Via header to achieve topology hiding?
>From Kamailio logs:
Oct 6 00:34:21 ip-172-31-27-85 /usr/sbin/kamailio[8941]: DEBUG:
registrar [reply.c:374]: build_contact(): created Contact HF: Contact:
<a class="moz-txt-link-rfc2396E" href="mailto:sips:gogasca@df7jal23ls0d.invalid;rtcweb-breaker=no;transport=wss"><sips:gogasca@df7jal23ls0d.invalid;rtcweb-breaker=no;transport=wss></a>;expires=200#015#012
Oct 6 00:34:21 ip-172-31-27-85 /usr/sbin/kamailio[8941]: DEBUG: sl
[sl.c:288]: send_reply(): reply in stateless mode (sl)
Oct 6 00:34:21 ip-172-31-27-85 /usr/sbin/kamailio[8941]: DEBUG:
<core> [msg_translator.c:204]: check_via_address():
check_via_address(172.31.22.2, df7jal23ls0d.invalid, 0)
O
Version: kamailio 4.1.5 (x86_64/linux)
# ------ topoh --------
modparam("topoh", "mask_key", "opencall")
modparam("topoh", "mask_ip", "<Public IP Address of Kamailio>")
modparam("topoh", "vparam_prefix", "llamato")
modparam("topoh", "mask_callid", 1)
modparam("topoh", "sanity_checks", 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://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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