[flexcoders] Problem invoking any webservice operation if the API contains a method called 'logout'

Thu, 19 Oct 2006 01:48:02 -0700

Figured out a weird issue with Flex 2.0 / Flash Player 9 .  Your comments welcome.
 
 
Issue:
When you are calling any webservice where the API contains a method/function/operation named 'logout' your call wont be processed.
and you get the exception mentioned in trace .
 
Just to confirm the issue I tried  writing webservice  in Intersystems Cache and .NET 1.0 .
The issue lies with webmethod name 'logout' , if its renamed to something else the life is good.
 
Trace :
TypeError: Error #1034: Type Coercion failed: cannot convert MC{mx.rpc.soap.mxml::[EMAIL PROTECTED] mx.rpc::AbstractService/logout()[EMAIL PROTECTED] to mx.rpc.soap.Operation.
 at mx.rpc.soap::WebService/::createOperationsFromPort()
 at mx.rpc.soap::WebService/::setPort()
 at mx.rpc.soap::WebService/http://www.adobe.com/2006/flex/mx/internal::wsdlHandler()
 at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction()
 at flash.events::EventDispatcher/dispatchEvent()
 at mx.rpc.soap::WSDLParser/dispatchEvent()
 at mx.rpc.soap::WSDLParser/::parseCompleted()
 at mx.rpc.soap::WSDLParser/http://www.adobe.com/2006/flex/mx/internal::httpResultHandler()
 at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction()
 at flash.events::EventDispatcher/dispatchEvent()
 at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()
 at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::resultHandler()
 at mx.rpc::Responder/result()
 at mx.rpc::AsyncRequest/acknowledge()
 at ::DirectHTTPMessageResponder/completeHandler()
 at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction()
 at flash.events::EventDispatcher/dispatchEvent()
 at flash.net::URLLoader/flash.net:URLLoader::onComplete()
 
 
Code:
.Net (C#)  Webservice
----------------------------------

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Diagnostics;

using System.Web;

using System.Web.Services;

namespace TestWS

{

[WebService(Namespace="http://vishwajit.com")]

public class Service1 : System.Web.Services.WebService

{

public Service1()

{

InitializeComponent();

}

private IContainer components = null;

private void InitializeComponent()

{

}

protected override void Dispose( bool disposing )

{

if(disposing && components != null)

{

components.Dispose();

}

base.Dispose(disposing);

}

[WebMethod]

public string login(string loginId , string password)

{

return "ok" ;

}

[WebMethod]

public string logout(string sessionId)

{

return "ok" ;

}

}//class

}//namespace

Flex 2.0 (AS3) Code for Webservice Client
--------------------------------------------------------------------
 
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="creationCompleteHandler()" >
 <mx:WebService id="loginWS"
 wsdl="http://vishwajit/TestWS/Service1.asmx?WSDL"
 useProxy="false" 
 fault="wsFault(event)" >
 
 <mx:operation name="login" result="getLoginResult(event)"  >
    <mx:request xmlns="" >  
    <username>a1</username>
    <password>a1</password> 
   </mx:request>
  </mx:operation>
 </mx:WebService>
 
 
 <mx:Script>
  <![CDATA[
  import mx.controls.Alert;
  
  public function creationCompleteHandler()
  {
   loginWS.login.send();  
  }
  public function getLoginResult(result : Object)
  {
    Alert.show(loginWS.login.lastResult + "");
  }
   
  public function wsFault(fault:Object)
  {
   Alert.show(""+fault);
  }
   
  ]]>
 </mx:Script>
</mx:Application>
 
--------------------------
 
Thank you.
 
Feedback / comments welcome.
 
 Vishwajit Girdhari  
 
The best way to be prepared for future is to invent it !
 
Flex Blog: http://flexiness.blogspot.com
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