HTTPChannel

Pacchetto	mx.messaging.channels
Classe	public class HTTPChannel
Ereditarietà	HTTPChannel PollingChannel Channel EventDispatcher Object
Sottoclassi	SecureHTTPChannel, StreamingHTTPChannel

Versione linguaggio:

ActionScript 3.0

Versioni prodotto:

BlazeDS 4, Adobe Digital Enterprise Platform Data Services per Java EE 3

Versioni runtime:

Flash Player 9, AIR 1.1

The HTTPChannel class provides the HTTP support for messaging. You can configure this Channel to poll the server at an interval to approximate server push. You can also use this Channel with polling disabled to send RPC messages to remote destinations to invoke their methods.

The HTTPChannel relies on network services native to Flash Player and AIR, and exposed to ActionScript by the URLLoader class. This channel uses URLLoader exclusively, and creates a new URLLoader per request.

Channels are created within the framework using the ServerConfig.getChannel() method. Channels can be constructed directly and assigned to a ChannelSet if desired.

Channels represent a physical connection to a remote endpoint. Channels are shared across destinations by default. This means that a client targetting different destinations may use the same Channel to communicate with these destinations.

When used in polling mode, this Channel polls the server for new messages based on the polling-interval-seconds property in the configuration file, and this can be changed by setting the pollingInterval property. The default value is 3 seconds. To enable polling, the channel must be connected and the polling-enabled property in the configuration file must be set to true, or the pollingEnabled property of the Channel must be set to true.

Proprietà pubbliche

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	Proprietà		Definito da
		authenticated : Boolean [sola lettura] Indicates if this channel is authenticated.	Channel
		channelSets : Array [sola lettura] Provides access to the ChannelSets connected to the Channel.	Channel
		connected : Boolean [sola lettura] Indicates whether this channel has established a connection to the remote destination.	Channel
		connectTimeout : int Provides access to the connect timeout in seconds for the channel.	Channel
		constructor : Object Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto.	Object
		endpoint : String [sola lettura] Provides access to the endpoint for this channel.	Channel
		failoverURIs : Array Provides access to the set of endpoint URIs that this channel can attempt to failover to if the endpoint is clustered.	Channel
		id : String Provides access to the id of this channel.	Channel
		piggybackingEnabled : Boolean Indicates whether this channel will piggyback poll requests along with regular outbound messages when an outstanding poll is not in progress.	HTTPChannel
		polling : Boolean [sola lettura] Reports whether the channel is actively polling.	HTTPChannel
		pollingEnabled : Boolean Indicates whether this channel is enabled to poll.	HTTPChannel
		pollingInterval : Number Provides access to the polling interval for this Channel.	HTTPChannel
		protocol : String [override] [sola lettura] Returns the protocol for this channel (http).	HTTPChannel
		reconnecting : Boolean [sola lettura] Indicates whether this channel is in the process of reconnecting to an alternate endpoint.	Channel
		recordMessageSizes : Boolean [sola lettura] Channel property determines the level of performance information injection - whether we inject message sizes or not.	Channel
		recordMessageTimes : Boolean [sola lettura] Channel property determines the level of performance information injection - whether we inject timestamps or not.	Channel
		requestTimeout : int Provides access to the default request timeout in seconds for the channel.	Channel
		uri : String Provides access to the URI used to create the whole endpoint URI for this channel.	Channel

Proprietà protette

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	Proprietà		Definito da
		shouldBeConnected : Boolean [sola lettura] Indicates whether this channel should be connected to its endpoint.	Channel

Metodi pubblici

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	Metodo		Definito da
		HTTPChannel(id:String = null, uri:String = null) Constructor.	HTTPChannel
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento.	EventDispatcher
		applySettings(settings:XML):void Subclasses should override this method to apply any settings that may be necessary for an individual channel.	Channel
		connect(channelSet:ChannelSet):void Connects the ChannelSet to the Channel.	Channel
		disablePolling():void Disables polling based on the number of times enablePolling() and disablePolling() have been invoked.	PollingChannel
		disconnect(channelSet:ChannelSet):void Disconnects the ChannelSet from the Channel.	Channel
		dispatchEvent(event:Event):Boolean Invia un evento nel flusso di eventi.	EventDispatcher
		enablePolling():void Enables polling based on the number of times enablePolling() and disablePolling() have been invoked.	PollingChannel
		hasEventListener(type:String):Boolean Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indica se per un oggetto è definita una proprietà specifica.	Object
		isPrototypeOf(theClass:Object):Boolean Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro.	Object
		logout(agent:MessageAgent):void Sends a CommandMessage to the server to logout if the Channel is connected.	Channel
		poll():void Initiates a poll operation if there are consumers subscribed to this channel, and polling is enabled for this channel.	PollingChannel
		propertyIsEnumerable(name:String):Boolean Indica se la proprietà specificata esiste ed è enumerabile.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Rimuove un listener dall'oggetto EventDispatcher.	EventDispatcher
		send(agent:MessageAgent, message:IMessage):void [override] Sends the specified message to its target destination.	PollingChannel
		setCredentials(credentials:String, agent:MessageAgent = null, charset:String = null):void Sets the credentials to the specified value.	Channel
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche.	Object
		toLocaleString():String Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate.	Object
		toString():String Restituisce la rappresentazione in formato stringa dell'oggetto specificato.	Object
		valueOf():Object Restituisce il valore di base dell'oggetto specificato.	Object
		willTrigger(type:String):Boolean Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato.	EventDispatcher

Metodi protetti

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	Metodo		Definito da
		applyClientLoadBalancingSettings(props:XML):void Applies the client load balancing urls if they exists.	Channel
		connectFailed(event:ChannelFaultEvent):void Processes a failed internal connect and dispatches the FAULT event for the channel.	Channel
		connectSuccess():void Processes a successful internal connect and dispatches the CONNECT event for the Channel.	Channel
		connectTimeoutHandler(event:flash.events:TimerEvent):void Handles a connect timeout by dispatching a ChannelFaultEvent.	Channel
		disconnectFailed(event:ChannelFaultEvent):void Processes a failed internal disconnect and dispatches the FAULT event for the channel.	Channel
		disconnectSuccess(rejected:Boolean = false):void Processes a successful internal disconnect and dispatches the DISCONNECT event for the Channel.	Channel
		flexClientWaitHandler(event:PropertyChangeEvent):void Handles a change to the guard condition for managing initial Channel connect for the application.	Channel
		getMessageResponder(agent:MessageAgent, message:IMessage):MessageResponder Returns the appropriate MessageResponder for the Channel's send() method.	Channel
		internalConnect():void Connects the Channel to its endpoint.	Channel
		internalDisconnect(rejected:Boolean = false):void Disconnects the Channel from its endpoint.	Channel
		internalSend(messageResponder:MessageResponder):void Sends the Message out over the Channel and routes the response to the responder.	Channel

Eventi

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	Riepilogo	Definito da
activate	[evento di trasmissione] Inviato quando Flash Player o l'applicazione AIR ottiene lo stato di attivazione del sistema operativo ed entra nello stato attivo.	EventDispatcher
channelConnect	Dispatched after the channel has connected to its endpoint.	Channel
channelDisconnect	Dispatched after the channel has disconnected from its endpoint.	Channel
channelFault	Dispatched after the channel has faulted.	Channel
deactivate	[evento di trasmissione] Inviato quando Flash Player o l'applicazione AIR perde l'attivazione del sistema operativo e sta entrando nello stato inattivo.	EventDispatcher
message	Dispatched when a channel receives a message from its endpoint.	Channel
propertyChange	Dispatched when a property of the channel changes.	Channel

Costanti protette

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	Costante		Definito da

Descrizione delle proprietà

piggybackingEnabled

proprietà

piggybackingEnabled:Boolean

Versione linguaggio:

ActionScript 3.0

Versioni prodotto:

BlazeDS 4, Adobe Digital Enterprise Platform Data Services per Java EE 3

Versioni runtime:

Flash Player 9, AIR 1.1

Indicates whether this channel will piggyback poll requests along with regular outbound messages when an outstanding poll is not in progress. This allows the server to piggyback data for the client along with its response to client's message.

Implementazione
public function get piggybackingEnabled():Boolean
public function set piggybackingEnabled(value:Boolean):void

polling

proprietà

polling:Boolean [sola lettura]

Versione linguaggio:

ActionScript 3.0

Versioni prodotto:

BlazeDS 4, Adobe Digital Enterprise Platform Data Services per Java EE 3

Versioni runtime:

Flash Player 9, AIR 1.1

Reports whether the channel is actively polling.

Implementazione
public function get polling():Boolean

pollingEnabled

proprietà

pollingEnabled:Boolean

Versione linguaggio:

ActionScript 3.0

Versioni prodotto:

BlazeDS 4, Adobe Digital Enterprise Platform Data Services per Java EE 3

Versioni runtime:

Flash Player 9, AIR 1.1

Indicates whether this channel is enabled to poll.

Implementazione
public function get pollingEnabled():Boolean
public function set pollingEnabled(value:Boolean):void

pollingInterval

proprietà

pollingInterval:Number

Versione linguaggio:

ActionScript 3.0

Versioni prodotto:

BlazeDS 4, Adobe Digital Enterprise Platform Data Services per Java EE 3

Versioni runtime:

Flash Player 9, AIR 1.1

Provides access to the polling interval for this Channel. The value is in milliseconds. This value determines how often this Channel requests messages from the server, to approximate server push.

Implementazione
public function get pollingInterval():Number
public function set pollingInterval(value:Number):void

Genera

ArgumentError — If the pollingInterval is assigned a value of 0 or less.

protocol

proprietà

protocol:String [sola lettura] [override]

Versione linguaggio:

ActionScript 3.0

Versioni prodotto:

BlazeDS 4, Adobe Digital Enterprise Platform Data Services per Java EE 3

Versioni runtime:

Flash Player 9, AIR 1.1

Returns the protocol for this channel (http).

Implementazione
override public function get protocol():String

Descrizione della funzione di costruzione

()

Funzione di costruzione

public function HTTPChannel(id:String = null, uri:String = null)

Versione linguaggio:

ActionScript 3.0

Versioni prodotto:

BlazeDS 4, Adobe Digital Enterprise Platform Data Services per Java EE 3

Versioni runtime:

Flash Player 9, AIR 1.1

Constructor.

Parametri

	`id:String` (default = `null`) — The id of this Channel.

	`uri:String` (default = `null`) — The uri for this Channel.

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HTTPChannel - AS3 BlazeDS LCDS

Classi x

piggybackingEnabled

polling

pollingEnabled

pollingInterval

protocol

HTTPChannel