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Significance of Result-Code in DWA

+1 vote
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I wanted to know if there is any significance of Result-Code AVP in DWA (Device-watchdog-answer).What would be the use case where a failed response (eg. 5012) is sent in the DWA ?
In that case will the server teer down the transport connection or send DPR ?Or should the server consider DWA with any result-code as a valid scenario and assume that the peer is active.

posted May 15, 2013 by anonymous

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1 Answer

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Let me first answer your second query that is either it will disconnect the transport connection or not.

Up to my knowledge it is dependent on the Implementation. There can be several scenarios to consider that handling of DWA.

One you have mentioned that it will just read the DWA message and if error is there or not it will assume that peer is alive. If the result code is error code then there is possibility to read the error message AVP .

Other can be whenever the result code has error code then it will send the DWR again but now it will be in suspect state. If again same thing will happen then it may closed the transport connection.

Yes there is significance of Result code in DWA. We can't say that the significance is applicable for all result codes. But for the success answers i has the role to be played.

In case of 5012 Diameter unable to comply it can indicate that the client side didn't understand the whole message so it will re-transmit the DWR but again in Suspected state.

For some of the DWR-DWA algo's i preferred you to go through this link RFC-3539

answer Mar 11, 2014 by Hiteshwar Thakur
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...