[OpenSIPS-Users] Diameter

[Bogdan-Andrei Iancu]

Hi Ghaith,

Ghaith ALKAYYEM wrote:
> Thank you for response,
>
> I see in the details of that module (auth_diameter) this diagram:
>
>      +----+ SIP INVITE   +=====+  DIAMETER      +------+       +------+
>      |    | no Auth hdr  #/////#  AA-Request    |      |       |      |
>      |    |---------1--->#/////#-------2------->|      |---2-->|      |
>      |UAC |              #UAS//#                |DClnt |       |DSrv  |
>      |    |<-----4-------#(SER)#<------3--------|(DISC)|<--3---|(DISC)|
>      |    |     401      #/////#  DIAMETER      |      |       |      |
>      +----+ Unauthorized +=====+  AA-Answer     +------+       +------+
>
> We notice in this architecture that we have two diameter blocks, the
> first one plays the role of diameter client(DClnt) and the second one
> plays the role of diameter server(DSrv).
>   
as said, this was an old approach and both the design and software are 
outdated.
> But in Radius modules the OpenSIPS interacts with Radius server
> directly, so maybe I have a misunderstood in this regard but I'd like to
> know whether it's possible to make OpenSIPS interact with Diameter
> server directly or this is not possible due to the nature of diameter
> protocol.
>   
yes, opensips talks directly to RADIUS server because it is using the 
libradiusclient-ng (which acts as radius client)
> Opendiameter is written in C++ so I think it's not possible to integrate
> it directly in OpenSIPS as a module, so we have to design something
> similar to the above diagram, isn't it? What would be the type of
> communication between OpenSIPS & Diameter Client, is it diameter based
> also?
>   
no, the diameter client should be provided by a library and opensips 
will link against that library (like we do for RADIUS now).

Also, looking at the opendiameter project, not sure how active it is - 
there are no code changes since February 2008.
> The implementation of Openblox looks promising as well, so do you think
> it would be a good candidate for building the module?
>   
Do you have a link to the project? is this project GPL compatible? also, 
does it provide a C API ?

Regards,
Bogdan

> Regards.
>
>
> On Tue, 2009-09-22 at 14:17 +0300, Bogdan-Andrei Iancu wrote:
>   
>> Hi Ghaith,
>>
>> Ghaith ALKAYYEM wrote:
>>     
>>> Hello lists,
>>>
>>> I'm interested in AAA functions according to Diameter which is newer
>>> than Radius.
>>>   
>>>       
>> yes, the new AAA interface will simplify a lot the addition of DIAMETER 
>> in OpenSIPS. All modules using the AAA interface will be automatically 
>> able to use the DIAMETER support.
>>     
>>> There's a module in OpenSIPS which is called "AUTH_DIAMETER Module" and
>>> it's mentioned that this module is obsolete. 
>>>       
>> yes ,it is obsolete as it is using an old and obsolete DIAMETER 
>> client-server implementation (DISC).
>>
>>     
>>> So I'd like your
>>> recommendations about this matter, should I work from the scratch to
>>> develop something that does this functionalities or is it possible to
>>> integrate other open source software with OpenSIPS.
>>>   
>>>       
>> Our plan is to use some opensource libraries to build a DIAMETER 
>> (aaa_diameter module)  implementation for the AAA API in OpenSIPS. We 
>> tried to evaluate opendiameter project for this 
>> (http://www.opendiameter.org/)
>>
>> Regards,
>> Bogdan
>>     
>>> Thank you very much.
>>>
>>>
>>>
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>>>
>>>   
>>>       
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>>     
>
>
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