webservices trace / log

Question

I have set of web services and I want to add a trace layer. I don't want to modify each web service since I have many. I would like to write log every entering to a web service: name of web service and parameters.

What is the best way to do so?

P.S. I am using asp.net and C#.

EDIT: I only want to wrap the web services as each one will have log(..) at the beginning.

Answer 1

A common way to achieve this is to inject a SOAP extension. From there you can intercept every request/response packet in raw SOAP. The sample shows how to implement one, and the explanation describes how it works and how to configure it.

Sample:

http://msdn.microsoft.com/en-us/library/system.web.services.protocols.soapextension.aspx

Explanation:

http://msdn.microsoft.com/en-us/library/esw638yk(vs.71).aspx

Configuration:

http://msdn.microsoft.com/en-us/library/b5e8e7kk(v=vs.71).aspx

<configuration>
 <system.web>
   <webServices>
     <soapExtensionTypes>
      <add type="{Type name}, {Assembly}" priority="1" group="0" />
     </soapExtensionTypes>
    </webServices>
 </system.web>
</configuration>