air.net.SocketMonitor - Adobe® Flex® 4 Language Reference (Flex 4)

Package	air.net
Class	public class SocketMonitor
Inheritance	SocketMonitor ServiceMonitor EventDispatcher Object
Subclasses	SecureSocketMonitor

Runtime Versions:

AIR 1.0, AIR 1.0

A SocketMonitor object monitors availablity of a TCP endpoint.

This class is included in the aircore.swc file. Flash Builder loads this class automatically when you create a project for AIR. The Flex SDK also includes this aircore.swc file, which you should include when compiling the application if you are using Flex SDK.

In Adobe^® Flash^® CS3 Professional, this class is included in the ServiceMonitorShim.swc file. To use classes in the air.net package , you must first drag the ServiceMonitorShim component from the Components panel to the Library and then add the following import statement to your ActionScript 3.0 code:

import air.net.*;

To use air.net package in Adobe^® Flash^® Professional (CS4 or higher):

Select the File > Publish Settings command.
In the Flash panel, click the Settings button for ActionScript 3.0. Select Library Path.
Click the Browse to SWC File button. Browse to Adobe Flash CSn/AIKn.n/frameworks/libs/air/aircore.swc file in the Adobe Flash Professional installation folder.
Click the OK button.
Add the following import statement to your ActionScript 3.0 code: import air.net.*;

Public Properties

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	Property		Defined By
		available : Boolean Whether the service is currently considered "available." The initial value is false until either a status check sets the property to true or the property is initialized to true explicitly. Typically, this property is set by the checkStatus() implementation in a subclass or specializer, but if the application has independent information about a service's availability (for example, a request just succeeded or failed), the property can be set explicitly.	ServiceMonitor
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		host : String [read-only] The host being monitored.	SocketMonitor
		lastStatusUpdate : Date [read-only] The time of the last status update.	ServiceMonitor
		pollInterval : Number The interval, in milliseconds, for polling the server.	ServiceMonitor
		port : int [read-only] The port being monitored.	SocketMonitor
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		running : Boolean [read-only] Whether the monitor has been started.	ServiceMonitor

Public Methods

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	Method		Defined By
		SocketMonitor(host:String, port:int) Creates a SocketMonitor object for a specified TCP endpoint.	SocketMonitor
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.	EventDispatcher
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	EventDispatcher
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		makeJavascriptSubclass(constructorFunction:Object):void [static] Adds public ServiceMonitor methods to a JavaScript constructor function's prototype.	ServiceMonitor
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		start():void Starts the service monitor.	ServiceMonitor
		stop():void Stops monitoring the service.	ServiceMonitor
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String [override] Returns the string representation of the specified object.	SocketMonitor
		valueOf():Object Returns the primitive value of the specified object.	Object
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	EventDispatcher

Protected Methods

	Method		Defined By
		checkStatus():void [override] Calling the checkStatus() method of a SocketMonitor object causes the application to try connecting to the socket, to check for a connect event.	SocketMonitor
		createSocket():Socket Creates a Socket object.	SocketMonitor

Events

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	Summary	Defined By
activate	[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.	EventDispatcher
deactivate	[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.	EventDispatcher
status	Indicates that the service status has changed.	ServiceMonitor

Property Detail

host

property

host:String [read-only]

Runtime Versions:

AIR 1.0

The host being monitored.

Implementation
public function get host():String

port

property

port:int [read-only]

Runtime Versions:

AIR 1.0

The port being monitored.

Implementation
public function get port():int

Constructor Detail

SocketMonitor

()

Constructor

public function SocketMonitor(host:String, port:int)

Runtime Versions:

AIR 1.0

Creates a SocketMonitor object for a specified TCP endpoint.

After creating a SocketMonitor object, the caller should call start to begin monitoring the status of the service.

As with the Timer object, the caller should maintain a reference to the SocketMonitor object. Otherwise, the runtime deletes the object and monitoring ends.

Parameters

	`host:String` — The host to monitor.

	`port:int` — The port to monitor.

Method Detail

checkStatus

()

method

override protected function checkStatus():void

Runtime Versions:

AIR 1.0

Calling the checkStatus() method of a SocketMonitor object causes the application to try connecting to the socket, to check for a connect event.

createSocket

()

method

protected function createSocket():Socket

Runtime Versions:

AIR 1.0

Creates a Socket object.

Returns

Socket — the Socket object to be used by this SocketMonitor.

toString

()

method

override public function toString():String

Runtime Versions:

AIR 1.0

Returns the string representation of the specified object.

Note: Methods of the Object class are dynamically created on Object's prototype. To redefine this method in a subclass of Object, do not use the override keyword. For example, a subclass of Object implements function toString():String instead of using an override of the base class.

Returns

String — A string representation of the object.