[erlang-questions] Erlang/OTP diameter relay doesn't work

[Anders Svensson GS]

Hi Asier.

Assuming you've configured the relay application as in the example,
the only reason you should get 3001 is if your CCR doesn't set the
P-bit, in which case it has to be locally processed.

Anders


erlang-questions-request@REDACTED writes:
> 
> We are trying to build a simple diameter relay agent for our company which will connect diameter clients to a number of different billing diameter servers. Right now we are just testing the system with one client and one server.
> 
> 
> Unfortunately, we are unable to get even the relay example from ericsson repository working.


> We modified slightly the example to connect to our diameter server on a remote address and listen to the local port TCP/3868. The relay agent connects successfully to our diameter server, performing a full CER/CEA exchange and subsequent DWR/DWA. Our client successfully connects to the relay agent through CER/CEA, but when the client sends a Credit Control Request (AVP Request-Type:4, Requested_Action: 2, Command-Code: 272), we get 3001 DIAMETER_COMMAND_UNSUPPORTED consistently, every single time. Peer_up callback is called, but no handle_request or pick_peer callback is called. When we try to use the same client with the server directly, everything works fine and we get 2001 SUCCESS.
> 
> 
> We are sure we are missing something, maybe a parameter in the transport options, a callback that we need to implement or something like that.
> 
> 
> Could you give us a hint?
> 
> 
> Thanks in advance,
> 
> Asier