[OpenSIPS-Users] [NEW] Topology Hiding based on dialog module

[Bogdan-Andrei Iancu]

Hi Brett,

On 06/30/2011 05:40 PM, Brett Nemeroff wrote:
> On Thu, Jun 30, 2011 at 9:12 AM, Anca Vamanu <anca.vamanu at gmail.com 
> <mailto:anca.vamanu at gmail.com>> wrote:
>
>     A new feature has been added to OpenSIPS trunk and will be present
>     in the 1.7 release: topology hiding functionality based on dialog
>     module.
>     It is a lightweight topology hiding built as an extension of
>     dialog module. It does not change the dialog elements (to tag,
>     from tag, callid), but only strips and restores the headers that
>     contain topology information (Via, Record-Route, Route and Contact
>     headers).
>
>
> Anca,
> This sounds really neat! Thanks! Question, call-ids frequently contain 
> source IPs in them. Is there anyway to re-write those?
This topology hiding approach is based on dialog continuity - dialog is 
not change (opensips acts as proxy, not like B2BUA) and some information 
(Routes, contact, VIA) from messages are hidden.

Nevertheless, as everything is dialog based, the dialog must not be 
affected, so dialog elements cannot be changed (callid, tags).

Regards,
Bogdan

-- 
Bogdan-Andrei Iancu
OpenSIPS solutions and "know-how"

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