PRACK and local outbound proxy

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Inline

 

________________________________

From: pjsip-bounces@xxxxxxxxxxxxxxx
[mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Gang Liu
Sent: Thursday, February 05, 2009 12:58 PM
To: pjsip list
Subject: Re: PRACK and local outbound proxy

 

inline.



On Thu, Feb 5, 2009 at 6:42 PM, Noga Yehudai <nogab at juniper.net> wrote:

New requests within the dialog will usually go where stated in contact
header of the previous response or as you said using the record route
URI.

The outbound proxy configuration claims that any request will pass
through the proxy, regardless of the contact/RR URIs.

This isn't true for RFC 3261. 

[Noga] you are right, only apply to req' uri.

	I use SBC instead of proxy, and I can't make it add record
route, therefore there will be no record route at all. But it does put
its own URI in the contact header - and this was ignored by pjsip as
well.

	 

I don't think it is SBC. It didn't change contact of 180 respond. 

[Noga] it does change the contact; please see line 5 in cap file as
opposed to line 4.

	Regards,

	Noga

	 

	 

	
________________________________


	From: pjsip-bounces@xxxxxxxxxxxxxxx
[mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Gang Liu
	Sent: Thursday, February 05, 2009 12:26 PM
	To: pjsip list
	Subject: Re: PRACK and local outbound proxy

	 

	I didn't check pjsip source code to check how PRACK handle
preloaded route set.
	But I think CANCEL goes wherever the INVITE went, using the same
route. But PRACK, UPDATE, INFO not this way.
	Correct me if my understanding is wrong.
	
	BTW, any Record-Route Header added into 200 OK respond?
	
	regards,
	Gang

	On Thu, Feb 5, 2009 at 5:28 PM, Noga Yehudai <nogab at juniper.net>
wrote:

	Isn't that the point of local outbound proxy configuration - to
always pass through the proxy?

	For example re-inv passes through the proxy with the same
configuration.

	 

	Regards,

	Noga

	 

	
________________________________


	From: pjsip-bounces@xxxxxxxxxxxxxxx
[mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Gang Liu
	Sent: Thursday, February 05, 2009 10:58 AM
	To: pjsip list
	Subject: Re: PRACK and local outbound proxy

	 

	Enable record route at your proxy and try again.
	
	180 ring from proxy don't include Record-Route Header.
	
	regards,
	
	Gang

	On Thu, Feb 5, 2009 at 3:33 PM, Noga Yehudai <nogab at juniper.net>
wrote:

	Hi,

	I found a problem when using Pjsua with -use-100rel and
-outbound.

	When using outbound proxy with PRACK, the PRACK will be sent
directly to the user and bypass the proxy.

	Do you have any idea how to overcome this issue? Is it a known
bug?

	I attached the capture of the call you can use Wireshark to view
it.

	 

	Thanks,

	Noga

	
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