com.vaadin.client.communication

Class MessageSender

java.lang.Object

com.vaadin.client.communication.MessageSender

public class MessageSender
extends Object

MessageSender is responsible for sending messages to the server.

Internally uses XhrConnection and/or PushConnection for delivering messages, depending on the application configuration.

Since:

1.0

Author:

Vaadin Ltd

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MessageSender.ResynchronizationState

Constructor Summary

Constructors

Constructor and Description
MessageSender(Registry registry) Creates a new instance connected to the given registry.

Method Summary

Modifier and Type	Method and Description
String	getCommunicationMethodName() Returns a human readable string representation of the method used to communicate with the server.
void	resynchronize() Resynchronize the client side, i.e.
protected void	send(elemental.json.JsonArray reqInvocations, elemental.json.JsonObject extraJson) Makes an UIDL request to the server.
void	send(elemental.json.JsonObject payload) Sends an asynchronous or synchronous UIDL request to the server using the given URI.
void	sendInvocationsToServer() Sends any pending invocations to the server if there is no request in progress and the application is running.
void	setClientToServerMessageId(int nextExpectedId, boolean force) Used internally to update what id the server expects.
void	setPushEnabled(boolean enabled) Sets the status for the push connection.

Methods inherited from class java.lang.Object

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

Constructor Detail

MessageSender

public MessageSender(Registry registry)

Creates a new instance connected to the given registry.

Parameters:

registry - the global registry

Method Detail

sendInvocationsToServer

public void sendInvocationsToServer()

Sends any pending invocations to the server if there is no request in progress and the application is running.

If a request is in progress, this method does nothing and assumes that it is called again when the request completes.

send

protected void send(elemental.json.JsonArray reqInvocations,
                    elemental.json.JsonObject extraJson)

Makes an UIDL request to the server.

Parameters:

reqInvocations - Data containing RPC invocations and all related information.

extraJson - Parameters that are added to the payload

send

public void send(elemental.json.JsonObject payload)

Sends an asynchronous or synchronous UIDL request to the server using the given URI.

Parameters:

payload - The contents of the request to send

setPushEnabled

public void setPushEnabled(boolean enabled)

Sets the status for the push connection.

Parameters:

enabled - true to enable the push connection; false to disable the push connection.

getCommunicationMethodName

public String getCommunicationMethodName()

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

Returns:

A string representation of the current transport type

resynchronize

public void resynchronize()

Resynchronize the client side, i.e. reload all component hierarchy and state from the server

setClientToServerMessageId

public void setClientToServerMessageId(int nextExpectedId,
                                       boolean force)

Used internally to update what id the server expects.

Parameters:

nextExpectedId - the new client id to set

force - true if the id must be updated, false otherwise