Receiving data through TCP Socket

Question

Hi all,
I am trying to receive some data through TCP Socket from the
server using XMLSocketClass. Ther server is responding with some
data. But I can't access this data in my application. Pls tell me
the reasons for not working of handler private function
dataHandler(event:DataEvent):void .
=============================================================================
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute">
<mx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.collections.ArrayCollection;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.DataEvent;
import flash.events.IOErrorEvent;
import flash.net.XMLSocket;
private var socket:XMLSocket;
private var nextId:int;
private var events:ArrayCollection = new ArrayCollection();
public static var host:String = "34.234.43.97";
public static var port:Number = 8002;
public var xml:XML;
private function connectToServer():void
socket = new XMLSocket();
socket.addEventListener(DataEvent.DATA, dataHandler);
configureListeners(socket);
socket.connect(host, port);
//This function is Not working
private function dataHandler(event:DataEvent):void {
Alert.show("dataHandler: " + event.data);
xml = new XML(event.data);
Alert.show(xml); }
private function
configureListeners(dispatcher:IEventDispatcher):void {
dispatcher.addEventListener(Event.CLOSE, closeHandler);
dispatcher.addEventListener(Event.CONNECT, connectHandler);
dispatcher.addEventListener(DataEvent.DATA, dataHandler);
dispatcher.addEventListener(IOErrorEvent.IO_ERROR,
ioErrorHandler);
dispatcher.addEventListener(ProgressEvent.PROGRESS,
progressHandler);
dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR,
securityErrorHandler);
private function closeHandler(event:Event):void {
trace("closeHandler: " + event);
private function ioErrorHandler(event:IOErrorEvent):void {
trace("ioErrorHandler: " + event);
private function progressHandler(event:ProgressEvent):void {
trace("progressHandler loaded:" + event.bytesLoaded + "
total: " + event.bytesTotal);
private function
securityErrorHandler(event:SecurityErrorEvent):void {
trace("securityErrorHandler: " + event);
/* private function dataHandler(event:DataEvent):void {
trace("dataHandler: " + event);
private function connectHandler(event:Event):void
var obj:Object = new Object();
obj.id = nextId++;
obj.eventName="connect";
obj.timestamp = new Date().valueOf();
events.addItem(obj);
private function sendData():void
var xmlvalue:String=txtData.text.toString() ;
var xmlfile:String =
"<command>SndIns<parameter1>0x06</parameter1><parameter2>0x00</parameter2><parameter3>0x7 1</parameter3><parameter4>0x0F</parameter4><parameter5>0x11</parameter5><parameter6>0xFF</ parameter6></command>";
socket.send(xmlfile);
Alert.show(xmlfile);
]]>
</mx:Script>
<mx:HBox width="80%" horizontalAlign="center">
<mx:TextInput id="txtData" name=""/>
<mx:Button id="btnConnect" label="Connect"
click="connectToServer();btnConnect.enabled = false"/>
<mx:Button id="btnSend" label="Send Data"
click="sendData()"/>
<!--<mx:Button label="getData" id="btnGet"
click="getData()"/>-->
</mx:HBox>
<mx:HBox x="10" y="30" width="100%">
<mx:DataGrid width="80%" height="100%"
dataProvider="{xml}">
<mx:columns>
<mx:Array>
<mx:DataGridColumn headerText="Event Name"
dataField="eventName"/>
</mx:Array>
</mx:columns>
</mx:DataGrid>
</mx:HBox>
</mx:Application>

Answer 1

Hi all,
I am trying to receive some data through TCP Socket from the
server using XMLSocketClass. Ther server is responding with some
data. But I can't access this data in my application. Pls tell me
the reasons for not working of handler private function
dataHandler(event:DataEvent):void .
=============================================================================
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute">
<mx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.collections.ArrayCollection;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.DataEvent;
import flash.events.IOErrorEvent;
import flash.net.XMLSocket;
private var socket:XMLSocket;
private var nextId:int;
private var events:ArrayCollection = new ArrayCollection();
public static var host:String = "34.234.43.97";
public static var port:Number = 8002;
public var xml:XML;
private function connectToServer():void
socket = new XMLSocket();
socket.addEventListener(DataEvent.DATA, dataHandler);
configureListeners(socket);
socket.connect(host, port);
//This function is Not working
private function dataHandler(event:DataEvent):void {
Alert.show("dataHandler: " + event.data);
xml = new XML(event.data);
Alert.show(xml); }
private function
configureListeners(dispatcher:IEventDispatcher):void {
dispatcher.addEventListener(Event.CLOSE, closeHandler);
dispatcher.addEventListener(Event.CONNECT, connectHandler);
dispatcher.addEventListener(DataEvent.DATA, dataHandler);
dispatcher.addEventListener(IOErrorEvent.IO_ERROR,
ioErrorHandler);
dispatcher.addEventListener(ProgressEvent.PROGRESS,
progressHandler);
dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR,
securityErrorHandler);
private function closeHandler(event:Event):void {
trace("closeHandler: " + event);
private function ioErrorHandler(event:IOErrorEvent):void {
trace("ioErrorHandler: " + event);
private function progressHandler(event:ProgressEvent):void {
trace("progressHandler loaded:" + event.bytesLoaded + "
total: " + event.bytesTotal);
private function
securityErrorHandler(event:SecurityErrorEvent):void {
trace("securityErrorHandler: " + event);
/* private function dataHandler(event:DataEvent):void {
trace("dataHandler: " + event);
private function connectHandler(event:Event):void
var obj:Object = new Object();
obj.id = nextId++;
obj.eventName="connect";
obj.timestamp = new Date().valueOf();
events.addItem(obj);
private function sendData():void
var xmlvalue:String=txtData.text.toString() ;
var xmlfile:String =
"<command>SndIns<parameter1>0x06</parameter1><parameter2>0x00</parameter2><parameter3>0x7 1</parameter3><parameter4>0x0F</parameter4><parameter5>0x11</parameter5><parameter6>0xFF</ parameter6></command>";
socket.send(xmlfile);
Alert.show(xmlfile);
]]>
</mx:Script>
<mx:HBox width="80%" horizontalAlign="center">
<mx:TextInput id="txtData" name=""/>
<mx:Button id="btnConnect" label="Connect"
click="connectToServer();btnConnect.enabled = false"/>
<mx:Button id="btnSend" label="Send Data"
click="sendData()"/>
<!--<mx:Button label="getData" id="btnGet"
click="getData()"/>-->
</mx:HBox>
<mx:HBox x="10" y="30" width="100%">
<mx:DataGrid width="80%" height="100%"
dataProvider="{xml}">
<mx:columns>
<mx:Array>
<mx:DataGridColumn headerText="Event Name"
dataField="eventName"/>
</mx:Array>
</mx:columns>
</mx:DataGrid>
</mx:HBox>
</mx:Application>