com.vaadin.client.communication

Class AtmospherePushConnection

java.lang.Object

com.vaadin.client.communication.AtmospherePushConnection

All Implemented Interfaces:

PushConnection

public class AtmospherePushConnection
extends Object
implements PushConnection

The default PushConnection implementation that uses Atmosphere for handling the communication channel.

Since:

7.1

Author:

Vaadin Ltd

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AtmospherePushConnection.AbstractJSO
static class	AtmospherePushConnection.AtmosphereConfiguration
static class	AtmospherePushConnection.AtmosphereResponse
protected static class	AtmospherePushConnection.FragmentedMessage Represents a message that should be sent as multiple fragments.
protected static class	AtmospherePushConnection.State

Constructor Summary

Constructors

Constructor and Description
AtmospherePushConnection()

Method Summary

Modifier and Type	Method and Description
protected AtmospherePushConnection.AtmosphereConfiguration	createConfig()
void	disconnect(com.google.gwt.user.client.Command command) Closes the push connection.
protected AtmospherePushConnection.AtmosphereConfiguration	getConfig()
String	getTransportType() Returns a human readable string representation of the transport type used to communicate with the server.
void	init(ApplicationConnection connection, UIState.PushConfigurationState pushConfiguration) Two-phase construction to allow using GWT.create().
boolean	isActive() Checks whether this push connection is in a state where it can push messages to the server.
boolean	isBidirectional() Checks whether this push connection should be used for communication in both directions or if an XHR should be used for client to server communication.
protected void	onClientTimeout(AtmospherePushConnection.AtmosphereResponse response)
protected void	onClose(AtmospherePushConnection.AtmosphereResponse response)
protected void	onConnect(AtmospherePushConnection.AtmosphereResponse response) Called whenever a server push connection is established (or re-established).
protected void	onError(AtmospherePushConnection.AtmosphereResponse response) Called if the push connection fails.
protected void	onMessage(AtmospherePushConnection.AtmosphereResponse response)
protected void	onOpen(AtmospherePushConnection.AtmosphereResponse response)
protected void	onReconnect(com.google.gwt.core.client.JavaScriptObject request, AtmospherePushConnection.AtmosphereResponse response)
protected void	onReopen(AtmospherePushConnection.AtmosphereResponse response)
protected void	onTransportFailure() Called if the transport mechanism cannot be used and the fallback will be tried.
void	push(elemental.json.JsonObject message) Pushes a message to the server.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AtmospherePushConnection

public AtmospherePushConnection()

Method Detail

init

public void init(ApplicationConnection connection,
                 UIState.PushConfigurationState pushConfiguration)

Description copied from interface: PushConnection

Two-phase construction to allow using GWT.create().

Specified by:

init in interface PushConnection

Parameters:

connection - The ApplicationConnection

isActive

public boolean isActive()

Description copied from interface: PushConnection

Checks whether this push connection is in a state where it can push messages to the server. A connection is active until PushConnection.disconnect(Command) has been called.

Specified by:

isActive in interface PushConnection

Returns:

true if this connection can accept new messages; false if this connection is disconnected or disconnecting.

isBidirectional

public boolean isBidirectional()

Description copied from interface: PushConnection

Checks whether this push connection should be used for communication in both directions or if an XHR should be used for client to server communication. A bidirectional push connection must be able to reliably inform about its connection state.

Specified by:

isBidirectional in interface PushConnection

Returns:

true if the push connection should be used for messages in both directions, false if it should only be used for server to client messages

push

public void push(elemental.json.JsonObject message)

Description copied from interface: PushConnection

Pushes a message to the server. Will throw an exception if the connection is not active (see PushConnection.isActive()).

Implementation detail: If the push connection is not connected and the message can thus not be sent, the implementation must call ConnectionStateHandler.pushNotConnected(JsonObject), which will retry the send later.

This method must not be called if the push connection is not bidirectional (if PushConnection.isBidirectional() returns false)

Specified by:

push in interface PushConnection

Parameters:

message - the payload to push

See Also:

PushConnection.isActive()

getConfig

protected AtmospherePushConnection.AtmosphereConfiguration getConfig()

onReopen

protected void onReopen(AtmospherePushConnection.AtmosphereResponse response)

onOpen

protected void onOpen(AtmospherePushConnection.AtmosphereResponse response)

onConnect

protected void onConnect(AtmospherePushConnection.AtmosphereResponse response)

Called whenever a server push connection is established (or re-established).

Parameters:

response -

Since:

7.2

disconnect

public void disconnect(com.google.gwt.user.client.Command command)

Description copied from interface: PushConnection

Closes the push connection. To ensure correct message delivery order, new messages should not be sent using any other channel until it has been confirmed that all messages pending for this connection have been delivered. The provided command callback is invoked when messages can be passed using some other communication channel.

After this method has been called, PushConnection.isActive() returns false. Calling this method for a connection that is no longer active will throw an exception.

Specified by:

disconnect in interface PushConnection

Parameters:

command - callback command invoked when the connection has been properly disconnected

onMessage

protected void onMessage(AtmospherePushConnection.AtmosphereResponse response)

onTransportFailure

protected void onTransportFailure()

Called if the transport mechanism cannot be used and the fallback will be tried.

onError

protected void onError(AtmospherePushConnection.AtmosphereResponse response)

Called if the push connection fails. Atmosphere will automatically retry the connection until successful.

onClose

protected void onClose(AtmospherePushConnection.AtmosphereResponse response)

onClientTimeout

protected void onClientTimeout(AtmospherePushConnection.AtmosphereResponse response)

onReconnect

protected void onReconnect(com.google.gwt.core.client.JavaScriptObject request,
                           AtmospherePushConnection.AtmosphereResponse response)

createConfig

protected AtmospherePushConnection.AtmosphereConfiguration createConfig()

getTransportType

public String getTransportType()

Description copied from interface: PushConnection

Returns a human readable string representation of the transport type used to communicate with the server.

Specified by:

getTransportType in interface PushConnection

Returns:

A human readable string representation of the transport type