Carlo Alducente's Blog

Carlo,

I believe I fixed a bug in these classes–let me know if I’m overlooking something. In WSProxy::onComplete, it always sets __busyOnCall to false when it completes. However, when calling multiple simultaneous requests, it seems that the __callQueue gets out of sync and the last __completeEvent would get called twice.

I simply pushed “__busyOnCall = false” to an else block so it would only get set back to false after the queue was empty:


if(__callQueue.length > 0){
callService(__callQueue[0].load, __callQueue[0].req, __callQueue[0].path, __callQueue[0].soapAction);
__callQueue.splice(0,1);
} else {
__busyOnCall = false;
}

This seems to be working solidly. Thoughts?

For what it’s worth, another issue is that if a service errors out, the queue will *never* continue to execute, and your application hangs. To fix this, you add a listener for IOErrorEvent in the callService method:


__urlLoader.addEventListener(IOErrorEvent.IO_ERROR, onError);


And continue the queue without completing the method (at the very least):


private function onError(evt:IOErrorEvent):void{
trace("*** WEB SERVICE ERROR ***");
trace(evt.text);
if(__callQueue.length > 0){
callService(__callQueue[0].load, __callQueue[0].req, __callQueue[0].path, __callQueue[0].soapAction);
__callQueue.splice(0,1);
} else {
__busyOnCall = false;
}
}


I’ll let you know when this thing is finished in case you’d be interested where your stuff is being used.

Hi, I have bought Adobe Flash CS3 Professional and found out thers not webservice in AS3 =(. I found this website and downloaded the webservice 1.1.zip. May i know what to do with the file? Thanks. I appreciate if you can email me back.

Very nice Alducente! Just what I needed. Thanks to Francis too for the contributions. I am using this now and I’ll let you know if I come up with anything to add. So far this is the best ( and simplest ) approach I have found. Great job.

Hi!
In the hunt for a good webService component for AS3 I found your sweet solution!
Thanks!

Only…
I’m connecting to a webService that returns a “DataSet”..
I’m new to AS3 and this may be a stupid question: How do I best parse the SOAP response so that I can iterate through and handle the requested data?

Hi, thanks or putting this together. but I don’t understand how to use it. I am connecting to our webservice I think, but how do I call the services? what does this do: ws.ResolveIP(done2, “192.123.0.200″, 0);

thanks!

by Joey Lott and Danny Patterson
Go to chapter 15 for a better and complete solution.

My example code:
private var xmlResults:XML = new URLLoader;
private var urlLoader:URLLoader = new URLLoader();

public function fErrorHandler(e:IOErrorEvent):void {
trace(“xml failed!”);
}

//when the “loader” event object finishes the loading of the xml file, run other needed functions to process the data
private function fLoaderCompleteHandler(event:Event):void {

trace(“xml loaded!!”); //jwt testing
var result2:XML = new XML(urlLoader.data); // loads the xml file data into the xml object
xmlResults = result2; //have the global xml object equal the current data loaded xml object
result2 = null; // dont need current xml object any more so erase it

fParseXML(0); //process the first set of records from the xml object
trace(“found xml” + xmlResults.toString());
}

public function fParseXML(intAddNum:Number):void{
//create variables to store the record info
//
var envelope:XML = xmlResults; //XML(urlLoader.data);
var soap:Namespace = envelope.namespace(“soap”);
var responseN:Namespace = new Namespace(“http://www.domain.com/school/ServiceCollege”);
var resultL:XMLList = envelope.soap::Body.responseN::HelloTestResponse.responseN::HelloTestResult;

var strTest:String;
//if only one response field will be return by the web service
strTest = resultL;
//do something like this if multiple response feilds will be returned
//strTest = resultL.response::schoolName.toString();
trace(“parsing:” + strTest);
trace(“done loading:”);
}

public function fBeginRequest():void{
var strXMLDataRequest:String
var urlRequest:URLRequest = new URLRequest();
urlRequest.contentType = “text/xml; charset=utf-8″;
urlRequest.method = “POST”;
urlRequest.url = “http://www.domain.com/school/serviceCollege.asmx”;
var soapAction:URLRequestHeader = new URLRequestHeader(“SOAPAction”,”http://www.domain.com/school/ServiceCollege/HelloTest”);
urlRequest.requestHeaders.push(soapAction);
strXMLDataRequest = “<soap:Envelope xmlns:xsi=\”http://www.w3.org/2001/XMLSchema-instance\” xmlns:xsd=\”http://www.w3.org/2001/XMLSchema\” xmlns:soap=\”http://schemas.xmlsoap.org/soap/envelope/\”>”;
strXMLDataRequest = strXMLDataRequest + “<soap:Body>”;
strXMLDataRequest = strXMLDataRequest + “<HelloTest xmlns=\”http://www.domain.com/school/ServiceCollege\” />”;
strXMLDataRequest = strXMLDataRequest + “</soap:Body>”;
strXMLDataRequest = strXMLDataRequest + “</soap:Envelope>”;
urlRequest.data = new XML(strXMLDataRequest);
urlLoader.load(urlRequest);
urlLoader.addEventListener(IOErrorEvent.IO_ERROR, fErrorHandler); //add the event to the “loader” object
urlLoader.addEventListener(Event.COMPLETE, fLoaderCompleteHandler); //add the event to the “loader” object
}

Soap Request:
<?xml version=”1.0″ encoding=”utf-8″?>
<soap:Envelope xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xmlns:xsd=”http://www.w3.org/2001/XMLSchema” xmlns:soap=”http://schemas.xmlsoap.org/soap/envelope/”>
<soap:Body>
<HelloTest xmlns=”http://www.domain.com/school/ServiceCollege” />
</soap:Body>
</soap:Envelope>

Soap Response:
<?xml version=”1.0″ encoding=”utf-8″?>
<soap:Envelope xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xmlns:xsd=”http://www.w3.org/2001/XMLSchema” xmlns:soap=”http://schemas.xmlsoap.org/soap/envelope/”>
<soap:Body>
<HelloTestResponse xmlns=”http://www.domain.com/school/ServiceCollege”>
<HelloTestResult>string</HelloTestResult>
</HelloTestResponse>
</soap:Body>
</soap:Envelope>