Accessing a Web Service using a Query String

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Jim Lewis - 22 Dec 2004 04:50 GMT

I have read several things that state accessing a Web Service through a
Query String should work. However, when I try to execute
http://localhost/webservice1/service1.asmx/HelloWorld I get the error below.
Can I access a Web Service through a Query Sting. I need to send XML to a
Flash movie using a Web Service.

Thank You,
Jim Lewis

Server Error in '/WebService1' Application.
----------------------------------------------------------------------------
----

Request format is unrecognized.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Request format is
unrecognized.

Source Error:

An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of the
exception can be identified using the exception stack trace below.

Stack Trace:

[InvalidOperationException: Request format is unrecognized.]

System.Web.Services.Protocols.WebServiceHandlerFactory.CoreGetHandler(Type
type, HttpContext context, HttpRequest request, HttpResponse response) +388

System.Web.Services.Protocols.WebServiceHandlerFactory.GetHandler(HttpContex
t context, String verb, String url, String filePath) +94
System.Web.HttpApplication.MapHttpHandler(HttpContext context, String
requestType, String path, String pathTranslated, Boolean useAppConfig) +696

System.Web.MapHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep
.Execute() +95
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&
completedSynchronously) +173

----------------------------------------------------------------------------
----
Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET
Version:1.1.4322.2032

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erymuzuan - 22 Dec 2004 14:40 GMT

May be you should add the HttpGet request protocol for the Web services
<configuration>
<system.web>
<webServices>
<protocols>
<add name="HttpGet"/>
<add type="HttpPost"/>
<add type="Documentation"/>
</protocols>
</webServices>
<system.web>
</configuration>

Regards
Erymuzuan Mustapa

> I have read several things that state accessing a Web Service through a
> Query String should work. However, when I try to execute
[quoted text clipped - 44 lines]
> Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET
> Version:1.1.4322.2032

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Jim Lewis - 22 Dec 2004 15:38 GMT

Erymuzuan,

I do not undersand what you mean by "add the HttpGet request protocol for
the Web services"

Regards,
Jim Lewis

> May be you should add the HttpGet request protocol for the Web services
> <configuration>
[quoted text clipped - 43 lines]
> >
> > [InvalidOperationException: Request format is unrecognized.]

System.Web.Services.Protocols.WebServiceHandlerFactory.CoreGetHandler(Type

> > type, HttpContext context, HttpRequest request, HttpResponse response) +388

System.Web.Services.Protocols.WebServiceHandlerFactory.GetHandler(HttpContex

> > t context, String verb, String url, String filePath) +94
> > System.Web.HttpApplication.MapHttpHandler(HttpContext context, String
> > requestType, String path, String pathTranslated, Boolean useAppConfig) +696

System.Web.MapHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep

> > .Execute() +95
> > System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&
[quoted text clipped - 4 lines]
> > Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET
> > Version:1.1.4322.2032

Reply to this Message

Dan Rogers - 22 Dec 2004 20:44 GMT

Hi Jim,

Here's a few things that may help.

First off, if you go into your project within Visual Studio, and then click
Debug/Start, do you get the default test page for your service? If you do,
you will find that for each method there is a link. Click on the method
you like to try, and this should take you to a page that has a button on it
(assuming you have very simple argument types), and a form that lets you
fill them in.

When you click that button, the HTTP Get protocol is used - which is
basically a query string that has the asmx address for the page where the
service lives, followed by an argument list that uses field names and
question marks just like you would expect a paramaterized query string to
look.

The HTTPGet protocol setting is something you'll find in the project's
web.config file. By default, it's always on so that the test page can be
displayed.

It isn't clear to me how this is, however, related to sending XML to a
flash movie. Flash movies aren't web services that I am aware of.

I hope this helps

Dan Rogers
Microsoft Corporation
--------------------
From: "Jim Lewis" <j_jim_lewis@hotmail.com>
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Subject: Re: Accessing a Web Service using a Query String
Date: Wed, 22 Dec 2004 07:38:39 -0800
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Erymuzuan,

I do not undersand what you mean by "add the HttpGet request protocol for
the Web services"

Regards,
Jim Lewis

> May be you should add the HttpGet request protocol for the Web services
> <configuration>
[quoted text clipped - 16 lines]
> > Query String should work. However, when I try to execute
> > http://localhost/webservice1/service1.asmx/HelloWorld I get the error

below.

> > Can I access a Web Service through a Query Sting. I need to send XML toa
> > Flash movie using a Web Service.
[quoted text clipped - 5 lines]
>
> --------------------------------------------------------------------------

> > ----
> >
[quoted text clipped - 10 lines]
> > An unhandled exception was generated during the execution of the
> > current web request. Information regarding the origin and location of

the

> > exception can be identified using the exception stack trace below.
> >
> > Stack Trace:
> >
> > [InvalidOperationException: Request format is unrecognized.]

System.Web.Services.Protocols.WebServiceHandlerFactory.CoreGetHandler(Type

> > type, HttpContext context, HttpRequest request, HttpResponse response)

+388

System.Web.Services.Protocols.WebServiceHandlerFactory.GetHandler(HttpContex

+696

System.Web.MapHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep

> > .Execute() +95
> > System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&
> > completedSynchronously) +173
>
> --------------------------------------------------------------------------

> > ----
> > Version Information: Microsoft .NET Framework Version:1.1.4322.2032;

ASP.NET

> > Version:1.1.4322.2032

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Accessing a Web Service using a Query String

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