Want to control the return value when DB did not give positive response.

[Yanrui Hu]

Here I have some customize requirement and not sure which file/function to
change.
Normally when DB connection timeout or there is no such user the DB return
negative response to radius. and radius return REJECT to nas.
I want to control these two situation and not sure which file to change,
there are too many return value in the project related with REJECT.

-- 
Best Regards,

Yanrui Hu

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