9 Apr
2008
9 Apr
'08
3:31 p.m.
Hi Victor,
if a UAC wants to have asymmetric signalling, just send from IP_A:PORT_A
and put in top most via IP_B:PORT_B - via is used for routing back the
reply.
regards,
Bogdan
Victor Cartes wrote:
Thanks, Iñaki. But It is not what I really need.
I need to send to an UAS a SIP Request, like OPTIONS, and tell it to
send the reply to a different transport address (IP Addr + Port) than
the source address of the request.
This is, basically, in order to perform NAT discovering and typing
from the server.
Thanks in advance,
Víctor
2008/4/7, Victor Cartes <ietf.sip(a)tivatechnologies.com
<mailto:ietf.sip@tivatechnologies.com>>:
Actually not. What I need the UAS exactly to do is to send the SIP
reply to a different IP address than the source of the SIP Request
that it is replying to. Just how it sends the replies to the UDP
port specified in top most Via HF.
2008/4/7, Bogdan-Andrei Iancu <bogdan(a)voice-system.ro
<mailto:bogdan@voice-system.ro>>:
Hi Victor,
Not sure I got your question correctly, but you mean like
something like "received" via param used to route back the
replies?
Regards,
Bogdan
Victor Cartes wrote:
Hello to all,
About SIP/UDP: Is there any way to specify the IP address
for SIP responses, in a similar fashion as port specified
on top most Via HF?
Thanks in advance,
Víctor
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9 Apr
9 Apr
3:35 p.m.
New subject: [OpenSER-Users] Specifying IP Address for SIP Responses
Thanks, Bodgan-Andei.
But unfortunelly, for UDP, that only work for the transport port. For
example, if I send the request from IP_A:PORT_A and I specify IP_B:PORT_B in
top most via, the reply is sent to IP_A:PORT_B.
2008/4/9, Bogdan-Andrei Iancu <bogdan(a)voice-system.ro>ro>:
Hi Victor,
if a UAC wants to have asymmetric signalling, just send from IP_A:PORT_A
and put in top most via IP_B:PORT_B - via is used for routing back the
reply.
regards,
Bogdan
Victor Cartes wrote:
Thanks, Iñaki. But It is not what I really need.
I need to send to an UAS a SIP Request, like OPTIONS, and tell it to
send the reply to a different transport address (IP Addr + Port) than the
source address of the request.
This is, basically, in order to perform NAT discovering and typing from
the server.
Thanks in advance,
Víctor
2008/4/7, Victor Cartes <ietf.sip(a)tivatechnologies.com <mailto:
ietf.sip(a)tivatechnologies.com>>t;>:
Actually not. What I need the UAS exactly to do is to send the SIP
reply to a different IP address than the source of the SIP Request
that it is replying to. Just how it sends the replies to the UDP
port specified in top most Via HF.
2008/4/7, Bogdan-Andrei Iancu <bogdan(a)voice-system.ro
<mailto:bogdan@voice-system.ro>>:
Hi Victor,
Not sure I got your question correctly, but you mean like
something like "received" via param used to route back the
replies?
Regards,
Bogdan
Victor Cartes wrote:
Hello to all,
About SIP/UDP: Is there any way to specify the IP address
for SIP responses, in a similar fashion as port specified
on top most Via HF?
Thanks in advance,
Víctor
------------------------------------------------------------------------
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Users mailing list
Users(a)lists.openser.org <mailto:Users@lists.openser.org>
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3:47 p.m.
New subject: [OpenSER-Users] Specifying IP Address for SIP Responses
El Wednesday 09 April 2008 12:35:46 Victor Cartes escribió:
Thanks, Bodgan-Andei.
But unfortunelly, for UDP, that only work for the transport port. For
example, if I send the request from IP_A:PORT_A and I specify IP_B:PORT_B
in top most via, the reply is sent to IP_A:PORT_B.
And if the request include "rport" parameter (empty) then that will not work
for IP neither for port.
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es
3:46 p.m.
New subject: [OpenSER-Users] Specifying IP Address for SIP Responses
El Wednesday 09 April 2008 12:31:42 Bogdan-Andrei Iancu escribió:
Hi Victor,
if a UAC wants to have asymmetric signalling, just send from IP_A:PORT_A
and put in top most via IP_B:PORT_B - via is used for routing back the
reply.
Hi Bodgan, that will not work since the UAS transport layer will compare the
IP in Via header wih the source IP and adds the source IP to "received"
parameter. After processing the request UAS will always send response to the
IP in "received" parameter:
http://tools.ietf.org/html/rfc3261#section-18.2.1
---------------------------------------------------
When the server transport receives a request over any transport, it
MUST examine the value of the "sent-by" parameter in the top Via
header field value. If the host portion of the "sent-by" parameter
contains a domain name, or if it contains an IP address that differs
from the packet source address, the server MUST add a "received"
parameter to that Via header field value. This parameter MUST
contain the source address from which the packet was received. This
is to assist the server transport layer in sending the response,
since it must be sent to the source IP address from which the request
came.
Consider a request received by the server transport which looks like,
in part:
INVITE sip:bob@Biloxi.com SIP/2.0
Via: SIP/2.0/UDP bobspc.biloxi.com:5060
The request is received with a source IP address of 192.0.2.4.
Before passing the request up, the transport adds a "received"
parameter, so that the request would look like, in part:
INVITE sip:bob@Biloxi.com SIP/2.0
Via: SIP/2.0/UDP bobspc.biloxi.com:5060;received=192.0.2.4
---------------------------------------------------
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es
6073
days inactive
6073
days old
3 comments
3 participants
participants (3)
-
Bogdan-Andrei Iancu -
Iñaki Baz Castillo -
Victor Cartes