gateway: Fix responses that don't comply RFC1813 for #599
gateway: Fix responses that don't comply RFC1813 for #599

windkit/leofs,windkit/leofs,yosukehara/leofs,vstax/leofs,leo-project/leofs,project-fifo/leofs,yosukehara/leofs,leo-project/leofs,vstax/leofs,project-fifo/leofs