         case date, expect, forwarded, from, host
         case ifMatch, ifModifiedSince, ifNoneMatch, ifRange, ifUnmodifiedSince
         case maxForwards, origin, pragma, proxyAuthorization, range, referer
-        case te, userAgent, upgrade, via, warning, xRequestedWith, dnt
+        case te, userAgent, upgrade, via, warning, xRequestedWith, xRequestedBy, dnt
         case xAuthorization, xForwardedFor, xForwardedHost, xForwardedProto
         case frontEndHttps, xHttpMethodOverride, xATTDeviceId, xWapProfile
         case proxyConnection, xUIDH, xCsrfToken

            case .via: return "via"
            case .warning: return "warning"
            case .xAuthorization: return "x-authorization"
            case .xRequestedWith: return "x-requested-with"
            case .dnt: return "dnt"
            case .xForwardedFor: return "x-forwarded-for"
            case .xForwardedHost: return "x-forwarded-host"

            "via":.via,
            "warning":.warning,
            "x-requested-with":.xRequestedWith,
            "x-requested-by":.xRequestedBy,
            "dnt":.dnt,
            "x-authorization":.xAuthorization,
            "x-forwarded-for":.xForwardedFor,
