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<p>Hi there,<br>
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<p>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.<br>
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<p>Unfortunately, we are unable to get even the relay example from ericsson repository working.<br>
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<p><a href="https://github.com/erlang/otp/tree/master/lib/diameter/examples/code">https://github.com/erlang/otp/tree/master/lib/diameter/examples/code</a><br>
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<p>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.<br>
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<p>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.<br>
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<p>Could you give us a hint?<br>
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<p>Thanks in advance,<br>
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<p>Asier<br>
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