[CHORE] handle validation errors
[CHORE] handle validation errors

[FEATURE] fire configure callback

zealord/gatewayd,xdv/gatewayd,xdv/gatewayd,whotooktwarden/gatewayd,Parkjeahwan/awegeeks,crazyquark/gatewayd,whotooktwarden/gatewayd,Parkjeahwan/awegeeks,crazyquark/gatewayd,zealord/gatewayd