Package com.vaadin.flow.server.communication

Interface Summary

Interface	Description
IndexHtmlRequestListener	This event listener is notified when the Single Page Application's HTML page is about to be generated and sent to the client.
PushConnection	Represents a bidirectional ("push") connection between a single UI and its client-side.
PushConnectionFactory	Factory that produces instances of PushConnection.

Class Summary

Class	Description
AtmospherePushConnection	A PushConnection implementation using the Atmosphere push support that is by default included in Vaadin.
AtmospherePushConnection.FragmentedMessage	Represents a message that can arrive as multiple fragments.
FaviconHandler	Handles the favicon request explicitly and return 404 for it.
HeartbeatHandler	Handles heartbeat requests.
IndexHtmlRequestHandler	This class is responsible for serving the index.html according to the template provided in the frontend folder.
IndexHtmlResponse	This represents the state of a Index HTML response being generated.
JavaScriptBootstrapHandler	Processes a 'start' request type from the client to initialize server session and UI.
JavaScriptBootstrapHandler.JavaScriptBootstrapContext	Custom BootstrapContext for JavaScriptBootstrapHandler.
JSR356WebsocketInitializer	Initializer class for JSR 356 websockets.
JSR356WebsocketInitializer.FakeServletConfig	"ServletConfig" which only provides information from a ServletRegistration and its ServletContext.
LongPollingCacheFilter	A PerRequestBroadcastFilter implementation that handles AtmospherePushConnection.PushMessages to ensure that a message is preserved in the BroadcasterCache until the client has received it.
MetadataWriter	Serializes miscellaneous metadata to JSON.
PushAtmosphereHandler	Handles Atmosphere requests and forwards them to logical methods in PushHandler.
PushHandler	Handles incoming push connections and messages and dispatches them to the correct UI/ AtmospherePushConnection.
PushRequestHandler	Handles requests to open a push (bidirectional) communication channel between the client and the server.
PwaHandler	Handles serving of PWA resources.
ReturnChannelHandler	RPC handler for return channel messages.
ServerRpcHandler	Handles a client-to-server message containing serialized RPC invocations.
ServerRpcHandler.RpcRequest	A data transfer object representing an RPC request sent by the client side.
SessionRequestHandler	Handles a request by passing it to each registered RequestHandler in the session in turn until one produces a response.
StreamReceiverHandler	Handles StreamReceiver instances registered in VaadinSession.
StreamRequestHandler	Handles StreamResource and StreamReceiver instances registered in VaadinSession.
StreamResourceHandler	Handles StreamResource instances registered in VaadinSession.
UidlRequestHandler	Processes a UIDL request from the client.
UidlWriter	Serializes pending server-side changes to UI state to JSON.
UidlWriter.ResolveContext	Provides context information for the resolve operations.
WebComponentBootstrapHandler	Bootstrap handler for WebComponent requests.
WebComponentProvider	Request handler that supplies the script/html of the web component matching the given tag.

Enum Summary

Enum	Description
AtmospherePushConnection.State

Exception Summary

Exception	Description
ServerRpcHandler.InvalidUIDLSecurityKeyException	Exception thrown then the security key sent by the client does not match the expected one.
ServerRpcHandler.ResynchronizationRequiredException	Exception thrown then the client side resynchronization is required.
StreamReceiverHandler.UploadInterruptedException	An UploadInterruptedException will be thrown by an ongoing upload if StreamVariable.isInterrupted() returns true.