input: [HTTP Code] 503 [Meaning] No response received from server [Error message] 
output: Service Unavailable
options: O K
options: B a d R e q u e s t
options: U n a u t h o r i z e d
options: N o t F o u n d
options: M e t h o d N o t A l l o w e d
options: U n s u p p o r t e d M e d i a T y p e
options: I n t e r n a l S e r v e r E r r o r
options: S e r v i c e U n a v a i l a b l e