7 Oct
2014
7 Oct
'14
6:19 a.m.
Daniel,
I will re-write it in Kamailio, seems to be that during initial WS
negotiation (HTTP Connection Upgrade), Kamailio is already including
the Via header:
Via: SIP/2.0/TCP 172.31.22.2:37137\r\n
Which as you said is perfectly fine, Im just trying to hide my info.
Thanks
-Gonzalo
No. Time Source Destination
Protocol Length Info
13 21:00:41.016 172.31.22.2 172.31.27.85 HTTP
814 GET / HTTP/1.1
Frame 13: 814 bytes on wire (6512 bits), 814 bytes captured (6512 bits)
Ethernet II, Src: 06:17:4e:87:69:98 (06:17:4e:87:69:98), Dst:
06:79:4f:ef:e3:d6 (06:79:4f:ef:e3:d6)
Internet Protocol Version 4, Src: 172.31.22.2 (172.31.22.2), Dst:
172.31.27.85 (172.31.27.85)
Transmission Control Protocol, Src Port: 37137 (37137), Dst Port:
na-localise (5062), Seq: 1, Ack: 1, Len: 748
Hypertext Transfer Protocol
GET / HTTP/1.1\r\n
[Expert Info (Chat/Sequence): GET / HTTP/1.1\r\n]
Request Method: GET
Request URI: /
Request Version: HTTP/1.1
Host: ramenlabs.io:5062\r\n
Upgrade: websocket\r\n
Connection: Upgrade\r\n
Pragma: no-cache\r\n
Cache-Control: no-cache\r\n
Origin: https://www.ramenlabs.io\r\n
Sec-WebSocket-Version: 13\r\n
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2180.0
Safari/537.36\r\n
Accept-Encoding: gzip, deflate, sdch\r\n
Accept-Language: en-US,en;q=0.8\r\n
Cookie: __utmt=1;
__utma=257296520.931028039.1410155955.1412651114.1412653901.42;
__utmb=257296520.1.10.1412653901; __utmc=257296520;
__utmz=257296520.1410155955.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)\r\n
Sec-WebSocket-Key: QR+qynpQ7+7psMScB/WkQQ==\r\n
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits\r\n
Sec-WebSocket-Protocol: sip\r\n
\r\n
[Full request URI: http://ramenlabs.io:5062/]
No. Time Source Destination
Protocol Length Info
15 21:00:41.017 172.31.27.85 172.31.22.2 HTTP
314 HTTP/1.1 101 Switching Protocols
Frame 15: 314 bytes on wire (2512 bits), 314 bytes captured (2512 bits)
Ethernet II, Src: 06:79:4f:ef:e3:d6 (06:79:4f:ef:e3:d6), Dst:
06:17:4e:87:69:98 (06:17:4e:87:69:98)
Internet Protocol Version 4, Src: 172.31.27.85 (172.31.27.85), Dst:
172.31.22.2 (172.31.22.2)
Transmission Control Protocol, Src Port: na-localise (5062), Dst Port:
37137 (37137), Seq: 1, Ack: 749, Len: 248
Hypertext Transfer Protocol
HTTP/1.1 101 Switching Protocols\r\n
[Expert Info (Chat/Sequence): HTTP/1.1 101 Switching Protocols\r\n]
[Message: HTTP/1.1 101 Switching Protocols\r\n]
[Severity level: Chat]
[Group: Sequence]
Request Version: HTTP/1.1
Status Code: 101
Response Phrase: Switching Protocols
Via: SIP/2.0/TCP 172.31.22.2:37137\r\n
Sec-WebSocket-Protocol: sip\r\n
Upgrade: websocket\r\n
Connection: upgrade\r\n
Sec-WebSocket-Accept: rb6Ng4aiTHNyZatk74btU9vZNPk=\r\n
Server: Llamato SipRegistrar(1.0)\r\n
Content-Length: 0\r\n
\r\n
On Mon, Oct 6, 2014 at 1:06 AM, Daniel-Constantin Mierla
<miconda(a)gmail.com> wrote:
Hello,
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().
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.
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.
Cheers,
Daniel
On 06/10/14 02:39, Gonzalo Gasca wrote:
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:
<sips:gogasca@df7jal23ls0d.invalid;rtcweb-breaker=no;transport=wss>;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)
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--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
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