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function TestTimeout()

{

    debug.trace("--Start--");

    TestService.set_defaultFailedCallback( 

            function(result, userContext, methodName)

    {

        var timedOut = result.get_timedOut();

        if( timedOut )

            debug.trace( "Timedout: " + methodName );

        else

            debug.trace( "Error: " + methodName );

    });

    TestService.set_defaultSucceededCallback( function(result)

    {

        debug.trace( result );

    });

    

    TestService.set_timeout(5000);

    TestService.HelloWorld("Call 1");

    TestService.Timeout("Call 2");

    TestService.Timeout("Call 3");

    TestService.HelloWorld("Call 4");

    TestService.HelloWorld("Call 5");

    TestService.HelloWorld(null); // 这句将导致错误

}

服务端的web service也非常简单：

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class TestService : System.Web.Services.WebService ...{
 
    public TestService () ...{
 
        // 如果使用设计的组件，请取消注释以下行  
        // InitializeComponent(); 
    }
 
    [WebMethod][ScriptMethod(UseHttpGet=true)]
    public string HelloWorld(string param) ...{
        Thread.Sleep(1000);
        return param;
    }
    
    [WebMethod][ScriptMethod(UseHttpGet=true)]
    public string Timeout(string param) ...{
        Thread.Sleep(10000);
        return param;
    }
}