Enabling log Flex applicationEnable log for HTTPService in Flex application

When i started with Flex development, i was trying to make HTTP call to the portlet and i was not able to get any response so i did add this code to my Flex program to enable the log so that i can see what was going on with the HTTPService.

In order to use the Logging you will have to Enable trace in the Flex program 


<?xml version="1.0"?>
<!-- logging/ButtonLifeCycle.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
creationComplete='initLogging()' >
  <mx:Script><![CDATA[
    import mx.controls.Alert;
    import mx.logging.ILogger;
    import mx.logging.Log;
    import mx.logging.LogEventLevel;
    import mx.logging.targets.TraceTarget;
    import mx.rpc.events.FaultEvent;
    import mx.rpc.events.ResultEvent;
    import mx.rpc.http.HTTPService;
    
    private function initLogging():void {
      var logTarget:TraceTarget = new TraceTarget();
      logTarget.filters=["mx.rpc.*","mx.messaging.*"];
      logTarget.level = LogEventLevel.ALL;
      Log.addTarget(logTarget); 
    }
    private function traceClick():void {
      useHttpService("http://www.google.com");  
    }
    
    private var service:HTTPService
    public function useHttpService(url:String):void {
      service = new HTTPService();
      service.url = url;
      service.resultFormat = HTTPService.RESULT_FORMAT_TEXT;
      service.method = "GET";
      service.addEventListener("result", httpResult);
      service.addEventListener("fault", httpFault);
      service.send(parameters);
    }
    public function httpResult(event:ResultEvent):void {
      var result:Object = event.result;
      Alert.show(event.result.toString());
    }
    public function httpFault(event:FaultEvent):void {
      var faultstring:String = event.fault.faultString;
      Alert.show(faultstring + event.fault.faultDetail + event.fault.rootCause);
    }
  ]]></mx:Script>
  <mx:Button id="b1" label="Click Me" click="traceClick()" />
</mx:Application>


The log is disabled by default in Flex so first i had to create initLogging() function to enable trace and then call it from createComplete() so that the log for HTTPService gets enabled. After that i could see this log in flashlog.txt when i tried making call to www.google.com from Flex application

'7671B99A-ED63-A113-A196-E28CF5762B74' producer set destination to 'DefaultHTTP'.
'direct_http_channel' channel endpoint set to http:
'7671B99A-ED63-A113-A196-E28CF5762B74' producer sending message 'D672CE47-357B-884E-07D7-E28CF5D40D82'
'direct_http_channel' channel sending message:
(mx.messaging.messages::HTTPRequestMessage)#0
body = (Object)#1
clientId = (null)
contentType = "application/x-www-form-urlencoded"
destination = "DefaultHTTP"
headers = (Object)#2
httpHeaders = (Object)#3
messageId = "D672CE47-357B-884E-07D7-E28CF5D40D82"
method = "GET"
recordHeaders = false
timestamp = 0
timeToLive = 0
url = "http://www.google.com"
'7671B99A-ED63-A113-A196-E28CF5762B74' producer connected.
'7671B99A-ED63-A113-A196-E28CF5762B74' producer acknowledge of 'D672CE47-357B-884E-07D7-E28CF5D40D82'.
Decoding HTTPService response
Processing HTTPService response message:
(mx.messaging.messages::AcknowledgeMessage)#0
body = "<!doctype html><html onmousemove="google&&google.fade&&google.fade(event)"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8"><title>Google</title><script>window.google={kEI:"upR9S5bhE4_MowTPsPWXCg",kEXPI:"17259,21965,23394,23807",kCSI:{e:"17259,21965,23394,23807",ei:"upR9S5bhE4_MowTPsPWXCg",expi:"17259,21965,23394,23807"},pageState:"#",kHL:"en",time:function(){return(new Date).getTime()},log:function(b,d,c){var a=new Image,e=google,g=e.lc,f=e.li;a.onerror=(a.onload=(a.onabort=function(){delete g[f]}));g[f]=a;c=c||"/gen_204?atyp=i&ct="+b+"&cad="+d+"&zx="+google.time();a.src=c;e.li=f+1},lc:[],li:0,j:{en:1,l:function(){},e:function(){},b:location.hash&&location.hash!="#",pl:[],mc:0,sc:0.5},Toolbelt:{}};(function(){for(var d=0,c;c=["ad","bc","p","pa","zd","ac","pc","pah","ph","sa","xx","zc","zz"][d++];)(function(a){google.j[a]=function(){google.j.pl.push([a,arguments])}})(c)})();
window.google.sn="webhp";window.google.timers={load:{t:{start:(new Date).getTime()}}};try{window.google.pt=window.gtbExternal&&window.gtbExternal.pageT();}catch(u){}window.google.jsrt_kill=1;
"
clientId = "DirectHTTPChannel0"
correlationId = "D672CE47-357B-884E-07D7-E28CF5D40D82"
destination = ""
headers = (Object)#1
DSStatusCode = 200
messageId = "3CAC4096-54F6-BF7C-EEB9-E28CF855D638"
timestamp = 0
timeToLive = 0
Warning: Ignoring 'secure' attribute in policy file from http://ad.doubleclick.net/crossdomain.xml. The 'secure' attribute is only permitted in HTTPS and socket policy files. See http://www.adobe.com/go/strict_policy_files for details.
Warning: Ignoring 'secure' attribute in policy file from http://ad.doubleclick.net/crossdomain.xml. The 'secure' attribute is only permitted in HTTPS and socket policy files. See http://www.adobe.com/go/strict_policy_files for details.
Warning: Domain www.youtube.com does not specify a meta-policy. Applying default meta-policy 'master-only'. This configuration is deprecated. See http://www.adobe.com/go/strict_policy_files to fix this problem.
Warning: Domain i3.ytimg.com does not specify a meta-policy. Applying default meta-policy 'master-only'. This configuration is deprecated. See http://www.adobe.com/go/strict_policy_files to fix this problem.
Warning: Domain i4.ytimg.com does not specify a meta-policy. Applying default meta-policy 'master-only'. This configuration is deprecated. See http://www.adobe.com/go/strict_policy_files to fix this problem.
Warning: Domain i2.ytimg.com does not specify a meta-policy. Applying default meta-policy 'master-only'. This configuration is deprecated. See http://www.adobe.com/go/strict_policy_files to fix this problem.
Warning: Domain www.youtube.com does not specify a meta-policy. Applying default meta-policy 'master-only'. This configuration is deprecated. See http://www.adobe.com/go/strict_policy_files to fix this problem.
Warning: Domain video-stats.video.google.com does not explicitly specify a meta-policy, but Content-Type of policy file http://video-stats.video.google.com/crossdomain.xml is 'text/x-cross-domain-policy'. Applying meta-policy 'by-content-type'.
Warning: Domain www.youtube.com does not specify a meta-policy. Applying default meta-policy 'master-only'. This configuration is deprecated. See http://www.adobe.com/go/strict_policy_files to fix this problem.
Warning: Domain video-stats.video.google.com does not explicitly specify a meta-policy, but Content-Type of policy file http://video-stats.video.google.com/crossdomain.xml is 'text/x-cross-domain-policy'. Applying meta-policy 'by-content-type'.

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