Framework Reference#The App ClassWSGI AppASGI AppOptionsRequest & ResponseWSGI Request & ResponseASGI Request & ResponseWebSocket (ASGI Only)UsageLost ConnectionsError HandlingMedia HandlersExtended ExampleTestingReferenceCookiesGetting CookiesSetting CookiesThe Secure AttributeThe SameSite AttributeThe Partitioned AttributeStatus CodesHTTPStatus1xx Informational2xx Success3xx Redirection4xx Client Error5xx Server ErrorError HandlingBase ClassPredefined ErrorsMediaUsageValidating MediaContent-Type NegotiationException HandlingReplacing the Default HandlersSupported Handler TypesCustom Handler TypeHandlers MappingMedia Type ConstantsMultipart FormsMultipart Form and Body Part TypesParser ConfigurationParsing OptionsParsing ErrorsRedirectionHTTPMovedPermanentlyHTTPFoundHTTPSeeOtherHTTPTemporaryRedirectHTTPPermanentRedirectMiddlewareShort-CircuitingException HandlingCORSUsageCORSMiddlewareHooksBefore HooksAfter HooksRoutingDefault BehaviorField ConvertersBuilt-in ConvertersCustom ConvertersCustom RoutersSuffixed RespondersDefault RouterRouting UtilitiesCustom HTTP MethodsInspect ModuleUsing Inspect FunctionsInspect Functions ReferenceRouter InspectionInformation ClassesVisitor ClassesUtilitiesURIDate and TimeHTTP StatusMedia typesAsyncOtherTesting HelpersSimulating RequestsOther HelpersTypingKnown LimitationsPublic Type Aliases