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CHAPTER 5 WEB SERVICES ENHANCEMENTS 3.0
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Listing 5-5. Digitally Signing a SOAP Request Message via the SoapContext using Microsoft.Web.Services3; using Microsoft.Web.Services3.Security; using Microsoft.Web.Services3.Security.Tokens; // Retrieve the SoapContext for the outgoing SOAP request message StockTraderServiceWse serviceProxy = new StockTraderServiceWse(); // Retrieve the X509 certificate from the CurrentUserStore certificate store X509SecurityToken token = GetSigningToken(); // Add signature element to a security section on the request to sign the request serviceProxy.RequestSoapContext.Security.Tokens.Add( token ); serviceProxy.RequestSoapContext.Security.Elements.Add( new MessageSignature( token ) ); This concludes the introduction to the WSE 3.0 API. The remainder of this chapter focuses on installation and configuration options for WSE 3.0. The subsequent chapters in the book are dedicated to showing you how to use the WSE API to implement the WS- specifications in your own service-oriented applications.
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Install and Configure WSE 3.0
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WSE 3.0 is easy to install and to configure. You must install Visual Studio 2005 prior to installing WSE 3.0, since WSE 3.0 will not install with earlier versions. You can install Visual Studio 2005 side by side with Visual Studio .NET 2003 if required. WSE 3.0 is a package of QuickStart sample applications and documentation that shows you how to use the various classes in the WSE assembly. But the engine of WSE 3.0 is a single assembly called Microsoft.Web.Services3.dll, which is installed by default under C:\Program Files\Microsoft WSE\v3.0. In addition, this assembly gets automatically registered in the Global Assembly Cache (GAC). In order to use the new assembly in your Web services projects, you will need to register it as a SOAP extension within either the machine.config or web.config files. If you update the machine.config file, the assembly will automatically be registered for all future Web services projects. Otherwise, you will need to update the web.config files for each new project individually. Listing 5-6 shows the two additional elements that you must update in the web.config file in order for your project to use WSE. You may actually require additional entries, but these are specific to individual WS- specifications such as WS-Security and are only required as needed. Note that you must include each individual element on a single line. In Listing 5-6, elements such as <section> are broken out on multiple lines for clarity only. They must, however, be entered as single lines in the actual web.config file.
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CHAPTER 5 WEB SERVICES ENHANCEMENTS 3.0
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Listing 5-6. The web.config Updates for a WSE-Enabled Web Service Project <configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0"> <configSections> <section name="microsoft.web.services3" type="Microsoft.Web.Services3.Configuration.WebServicesConfiguration, Microsoft.Web.Services3, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> </configSections> <system.web> <webServices> < soapServerProtocolFactory type="Microsoft.Web.Services3.WseProtocolFactory, Microsoft.Web.Services3, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/> </soapServerProtocolFactory> <soapExtensionImporterTypes> <add type="Microsoft.Web.Services3.Description.WseExtensionImporter, Microsoft.Web.Services3, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/> </soapExtensionImporterTypes> </webServices> </system.web> </configuration> Web service client projects do not need to register the SOAP extension, but they do need to register the WebServicesConfiguration class. In addition, the client s Web service proxy class must inherit from Microsoft.Web.Services3.WebServicesClientProtocol Without WSE, the proxy class file inherits from System.Web.Services.Protocols.SoapHttpClientProtocol This change is required so that Web service requests get routed through the WSE filters rather than through the standard HTTP-based SOAP filters.
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Note If you want to update the machine.config file, simply copy the <section> element from Listing 5-2
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into the machine.config file, under the <configSections> node.
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If you prefer to not type these entries manually (and we certainly do!), then you can use the convenient Configuration Editor that ships with WSE 3.0. This tool provides a tabbed GUI interface in which you specify configuration settings for a project and then automatically apply the settings without having to write the code manually. The tool can be accessed directly from within your Visual Studio .NET project, as shown in Figure 5-2.
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CHAPTER 5 WEB SERVICES ENHANCEMENTS 3.0
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Figure 5-2. Menu access for the WSE 3.0 Configuration Editor Figure 5-3 shows how you can use the editor to implement the basic settings we have covered so far. You can use the editor for all .NET project types. If you are using it for an ASP .NET Web application or service project, it gives you an additional option to register the SOAP extension class. Otherwise, the second check box in the GUI interface is disabled. The editor settings shown in Figure 5-3 will generate the web.config settings that are shown in Listing 5-6. This is not bad for two simple check box clicks!
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