I have written a custom httpModule for web service plumbing feature. It means the plumbing class will log the request details and also the response details. Its like suppose we have a web service to get the customer nameaccording to the customer id; so the input to the web service is customer id and output would be customer name. I generally call the web service through URL and pass this customerid in my querystring. In my httpModule, I can get the customerid easily in Application_BeginRequestbecause I pass this as querystring. But I face problem when I try to get the response in Application_EndRequest.
Suppose I pass the customerid as http://xxx/WS.asmx/getCustomerName?sCustomerID=000000and the output is <string xmlns="xxxxx">TBD</string>. Now I need this xml string <string xmlns="xxxxx">TBD</string> in my Application_EndRequest through Response object. I bet that Response object should have this xml string but I dont know how to get that. I dont know whether I make you clear about my problem. If not, please let me know. Is there any way to get the response in httpModule.

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Subhendu De

Hi Subhendu,

As for ASP.NET ASMX webservice, for http get scenario, SoapExtension does not work. I haven't tested yet, but onething you can have a look is the "HttpResponse Filter" which can let you intercept the response stream(underlying binary data). You can try to see whether you can attach a custom filter in HttpModule's begining

#HttpResponse..::.Filter Property
http://msdn.microsoft.com/en-us/library/system.web.httpresponse.filter.aspx

As for WCF, you can use MessageInspector to inspect or modify underlying soap message. Here are some reference articles about WCF Message Inspector:

#Message Inspectors
http://msdn.microsoft.com/en-us/library/aa717047.aspx

#Writing a WCF Message Inspector
http://weblogs.asp.net/paolopia/archive/2007/08/23/writing-a-wcf-message-inspector.aspx

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Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Look into the SoapExtension class instead of HttpModule's when working with ASMX web services.

Better yet, consider that Microsoft now considers ASMX to be "legacy technology" and use WCF instead.

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John Saunders
WCF is Web Services. They are not two separate things.
Use WCF for All New Web Service Development, instead of legacy ASMX or obsolete WSE
Use File->New Project to create Web Service Projects

yes, soapextension comes into action when I add the service using web reference in my project. But I call the web service using HTTP GET url calling as I mentioned in my post. If I call this using URL then SoapExtension doesn't work. Is there any other way. How can I accomplishthe thing if I use WCF?

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Subhendu De

You'll need to ask on the WCF forum, so I'll move the question there. There's no other way to do that with ASMX web services.

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John Saunders
WCF is Web Services. They are not two separate things.
Use WCF for All New Web Service Development, instead of legacy ASMX or obsolete WSE
Use File->New Project to create Web Service Projects

Hi Subhendu,

As for ASP.NET ASMX webservice, for http get scenario, SoapExtension does not work. I haven't tested yet, but onething you can have a look is the "HttpResponse Filter" which can let you intercept the response stream(underlying binary data). You can try to see whether you can attach a custom filter in HttpModule's begining

#HttpResponse..::.Filter Property
http://msdn.microsoft.com/en-us/library/system.web.httpresponse.filter.aspx

As for WCF, you can use MessageInspector to inspect or modify underlying soap message. Here are some reference articles about WCF Message Inspector:

#Message Inspectors
http://msdn.microsoft.com/en-us/library/aa717047.aspx

#Writing a WCF Message Inspector
http://weblogs.asp.net/paolopia/archive/2007/08/23/writing-a-wcf-message-inspector.aspx

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Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Thanks Steven... I have reviewed the post and found a solution.

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Subhendu De