Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

[Daniel Zanutti]

Hi

Currently configuration is too way complex to implement a B2B. We tried but
we generate several branchs and lose control while using B2B.

Thanks for the advice

On Mon, Oct 24, 2016 at 11:16 AM, Newlin, Ben <ben.new...@inin.com> wrote:

> OpenSIPS has a B2B module that you could run on the existing server. There
> shouldn’t be any need for a B2B server and a proxy server; the B2B would
> replace the proxy. Unless you just can’t change the config of that server
> for some reason?
>
>
>
>
>
> Ben Newlin
>
>
>
> *From: *<users-boun...@lists.opensips.org> on behalf of Daniel Zanutti <
> daniel.zanu...@gmail.com>
> *Reply-To: *OpenSIPS users mailling list <users@lists.opensips.org>
> *Date: *Friday, October 21, 2016 at 9:57 PM
> *To: *OpenSIPS users mailling list <users@lists.opensips.org>
> *Subject: *Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional
> responses
>
>
>
> Hi Ben and Alex
>
>
>
> Thanks for the quick response. This is exactly what I was worrying about,
> get unto some unpredictable state like A rejecting some packages.
>
>
>
> Agree that putting a B2B in front/back of opensips would solve but it´s
> another server =(
>
>
>
> Thanks for the advices guys!
>
>
>
> On Fri, Oct 21, 2016 at 11:10 PM, Alex Balashov <abalas...@evaristesys.com>
> wrote:
>
> On 10/21/2016 06:36 PM, Newlin, Ben wrote:
>
> Not only that, but provisional responses (except 100 Trying) are
> required to have a To tag [1]. So you would likely run into issues with
> UAs if you start returning messages without them.
>
>
> That is an astute point.
>
>
>
> --
> Alex Balashov | Principal | Evariste Systems LLC
>
> Tel: +1-706-510-6800 (direct) / +1-800-250-5920 (toll-free)
> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>
> ___
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> Users@lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
>
>
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>
>
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Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

[Newlin, Ben]

OpenSIPS has a B2B module that you could run on the existing server. There 
shouldn’t be any need for a B2B server and a proxy server; the B2B would 
replace the proxy. Unless you just can’t change the config of that server for 
some reason?


Ben Newlin

From: <users-boun...@lists.opensips.org> on behalf of Daniel Zanutti 
<daniel.zanu...@gmail.com>
Reply-To: OpenSIPS users mailling list <users@lists.opensips.org>
Date: Friday, October 21, 2016 at 9:57 PM
To: OpenSIPS users mailling list <users@lists.opensips.org>
Subject: Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

Hi Ben and Alex

Thanks for the quick response. This is exactly what I was worrying about, get 
unto some unpredictable state like A rejecting some packages.

Agree that putting a B2B in front/back of opensips would solve but it´s another 
server =(

Thanks for the advices guys!

On Fri, Oct 21, 2016 at 11:10 PM, Alex Balashov 
<abalas...@evaristesys.com<mailto:abalas...@evaristesys.com>> wrote:
On 10/21/2016 06:36 PM, Newlin, Ben wrote:
Not only that, but provisional responses (except 100 Trying) are
required to have a To tag [1]. So you would likely run into issues with
UAs if you start returning messages without them.

That is an astute point.


--
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800<tel:%2B1-706-510-6800> (direct) / 
+1-800-250-5920<tel:%2B1-800-250-5920> (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

[Daniel Zanutti]

Hi Ben and Alex

Thanks for the quick response. This is exactly what I was worrying about,
get unto some unpredictable state like A rejecting some packages.

Agree that putting a B2B in front/back of opensips would solve but it´s
another server =(

Thanks for the advices guys!

On Fri, Oct 21, 2016 at 11:10 PM, Alex Balashov 
wrote:

> On 10/21/2016 06:36 PM, Newlin, Ben wrote:
>
> Not only that, but provisional responses (except 100 Trying) are
>> required to have a To tag [1]. So you would likely run into issues with
>> UAs if you start returning messages without them.
>>
>
> That is an astute point.
>
>
> --
> Alex Balashov | Principal | Evariste Systems LLC
>
> Tel: +1-706-510-6800 (direct) / +1-800-250-5920 (toll-free)
> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>
> ___
> Users mailing list
> Users@lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
___
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Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

[Alex Balashov]

On 10/21/2016 06:36 PM, Newlin, Ben wrote:


Not only that, but provisional responses (except 100 Trying) are
required to have a To tag [1]. So you would likely run into issues with
UAs if you start returning messages without them.


That is an astute point.

--
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 (direct) / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

[Newlin, Ben]

Not only that, but provisional responses (except 100 Trying) are required to 
have a To tag [1]. So you would likely run into issues with UAs if you start 
returning messages without them.

You could just drop the provisional replies, but you may run into issues with 
timeouts in that case as user A won’t receive any provisional responses until 
answer.

Your best bet would be to use the B2BUA module and let OpenSIPS rewrite the 
tags for you so that user A only ever sees the tags coming from OpenSIPS, never 
the ones from the gateways.

[1] https://tools.ietf.org/html/rfc3261#section-8.2.6.2

Ben Newlin

From: <users-boun...@lists.opensips.org> on behalf of Alex Balashov 
<abalas...@evaristesys.com>
Reply-To: OpenSIPS users mailling list <users@lists.opensips.org>
Date: Friday, October 21, 2016 at 5:55 PM
To: "users@lists.opensips.org" <users@lists.opensips.org>
Subject: Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

Conceptually, To tags are governed by the UAs, not the proxy, so, like
most fundamental elements of SIP messages, the proxy has no business
removing them. :-)

On 10/21/2016 05:41 PM, Daniel Zanutti wrote:

Hi

Short:
Do you guys see any problem on removing the to-tag of all 1XX messages?


Long description:
If user A calls number . Opensips forward to gateway B which replies
with 183 session progress, then refuses with 503.

Opensips then call gateway C which replies with 183 then 200 OK.

User A now is using to-tag from gateway A and not from gateway B and I
have an unexpected result on subsequent messages.

Do you guys see any problem on removing the to-tag of all 1XX messages?

Thanks


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--
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 (direct) / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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Re: [OpenSIPS-Users] Remove to-tag from 1XX provisional responses

[Alex Balashov]

Conceptually, To tags are governed by the UAs, not the proxy, so, like 
most fundamental elements of SIP messages, the proxy has no business 
removing them. :-)


On 10/21/2016 05:41 PM, Daniel Zanutti wrote:


Hi

Short:
Do you guys see any problem on removing the to-tag of all 1XX messages?


Long description:
If user A calls number . Opensips forward to gateway B which replies
with 183 session progress, then refuses with 503.

Opensips then call gateway C which replies with 183 then 200 OK.

User A now is using to-tag from gateway A and not from gateway B and I
have an unexpected result on subsequent messages.

Do you guys see any problem on removing the to-tag of all 1XX messages?

Thanks


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--
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 (direct) / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

___
Users mailing list
Users@lists.opensips.org
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[OpenSIPS-Users] Remove to-tag from 1XX provisional responses

[Daniel Zanutti]

Hi

Short:
Do you guys see any problem on removing the to-tag of all 1XX messages?


Long description:
If user A calls number . Opensips forward to gateway B which replies
with 183 session progress, then refuses with 503.

Opensips then call gateway C which replies with 183 then 200 OK.

User A now is using to-tag from gateway A and not from gateway B and I have
an unexpected result on subsequent messages.

Do you guys see any problem on removing the to-tag of all 1XX messages?

Thanks
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