[OpenSIPS-Users] Questions about best practice b2b_logic implementation

[Denys Pozniak]

> If you have one socket per transport, then the automatic selection should
work ok.
For example, I have 3 external interfaces (sip/udp, sip/tcp, sip/tls) and 1
internal one (sip/udp).
If a request comes for an internal one, how will the outgoing routing
proceed as per needed transport (eg, this is sip/tls) in b2b? What will
OpenSIPS look at ($ru/Route/...)?

ср, 18 окт. 2023 г. в 19:34, Ovidiu Sas <osas at voipembedded.com>:

> I haven’t experimented with this … so I can’t comment.
>
> -ovidiu
>
> On Wed, Oct 18, 2023 at 11:13 Denys Pozniak <denys.pozniak at gmail.com>
> wrote:
>
>> and comment please this question if possible:
>> - If nodes operate in anycast + clusterer mode, then in what route should
>> function t_anycast_replicate() be called?
>>
>>
>> ср, 18 окт. 2023 г. в 16:49, Denys Pozniak <denys.pozniak at gmail.com>:
>>
>>> Thank you for such a cool and detailed answer!
>>> But I would like to clarify the following:
>>>
>>> >Custom headers can be set for each b2b_entity during the entity setup
>>> via the extra_hdrs and extra_hdrs_bodies [4] [5].
>>> Do I understand correctly that this only works for initial invites?
>>>
>>> >For now, the outgoing socket is set by opensips internally. There were
>>> some fixes related to this, make sure that you are using the latest
>>> opensips version.
>>> But I have several sockets and how can I influence the choice?
>>>
>>> ср, 18 окт. 2023 г. в 15:59, Ovidiu Sas <osas at voipembedded.com>:
>>>
>>>> Hello Denys,
>>>>
>>>> Dialog module should *never* be mixed with the b2b module.
>>>> For b2b calls one can use the $b2b_logic.ctx vars [1].
>>>> For b2b tracing use the 'b' scope in trace() [2].
>>>> There are some issues as not all provisional replies are traced [3].
>>>> Custom headers can be set for each b2b_entity during the entity setup
>>>> via the extra_hdrs and extra_hdrs_bodies [4] [5].
>>>> For now, the outgoing socket is set by opensips internally. There were
>>>> some fixes related to this, make sure that you are using the latest
>>>> opensips version.
>>>>
>>>> -ovidiu
>>>>
>>>> [1]
>>>> https://opensips.org/docs/modules/3.4.x/b2b_logic.html#b2b_logic.ctx
>>>> [2] https://opensips.org/docs/modules/3.4.x/tracer.html#func_trace
>>>> [3] https://github.com/OpenSIPS/opensips/issues/3194
>>>> [4]
>>>> https://opensips.org/docs/modules/3.4.x/b2b_logic.html#func_b2b_server_new
>>>> [5]
>>>> https://opensips.org/docs/modules/3.4.x/b2b_logic.html#func_b2b_client_new
>>>>
>>>>
>>>> On Wed, Oct 18, 2023 at 9:16 AM Denys Pozniak <denys.pozniak at gmail.com>
>>>> wrote:
>>>> >
>>>> > Hello!
>>>> >
>>>> > I'm trying to implement topology hiding (b2b_logic) in an existing
>>>> config, but there are points that are not clear to me:
>>>> > - Can I somehow use dialog variables in b2b mode? if not, any
>>>> alternative? I see they are created for the initial leg (with state=3), but
>>>> not available in the b2b mode;
>>>> > - How to configure a tracer (proto_hep) in b2b mode?
>>>> > - How to convert transport and select outgoing socket (the question
>>>> has already been asked in a separate mail)?
>>>> > - How can I add the necessary custom X-headers also for in-dialog
>>>> requests (for example, for re-INVITE)? It does not work via insert_hf in
>>>> [script_req_route] neither via function b2b_client_new() as well;
>>>> > - If nodes operate in anycast + clusterer mode, then in what route
>>>> should function t_anycast_replicate() be called?
>>>> >
>>>> > --
>>>> >
>>>> > BR,
>>>> > Denys Pozniak
>>>> >
>>>> >
>>>> > _______________________________________________
>>>> > Users mailing list
>>>> > Users at lists.opensips.org
>>>> > http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>>
>>>>
>>>>
>>>> --
>>>> VoIP Embedded, Inc.
>>>> http://www.voipembedded.com
>>>>
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at lists.opensips.org
>>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>>
>>>
>>>
>>> --
>>>
>>> BR,
>>> Denys Pozniak
>>>
>>>
>>>
>>
>> --
>>
>> BR,
>> Denys Pozniak
>>
>>
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>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>
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-- 

BR,
Denys Pozniak
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