data matrix generator c# Lab: Defining the Message Security in Visual C#.NET

Draw Data Matrix in Visual C#.NET Lab: Defining the Message Security

Lab: Defining the Message Security
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In this lab, you will configure some of the elements associated with message-level security and view the differences that exist in the number and purpose of the messages that are sent and received.
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Lesson 2: Message-Level Security
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Exercise 1
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Configure Basic Message Security
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In this first exercise, you will configure a client and service to use basic message-level security. To see the format of the secured message, you use the Service Trace Viewer utility. 1. Navigate to the InstallHome>/7/Lesson2/Exercise1/<language>/Before directory and double-click the Exercise1.sln file to open the solution in Visual Studio. The solution consists of two projects. They are as follows: The DemoService project, a simple WCF service library that implements the IGetHeaders interface. This interface consists of a single method (GetHeaders) that strips a custom header out of the request and returns it to the client. The TestClient project, a Console application that generates a request for the service and displays the result in the Console window. To get a sense of how message security changes the message, start by creating a baseline trace. 2. In Windows Explorer, navigate to the InstallHome>/7/Lesson2/Exercise1/<language>/Before/DemoService/bin/Debug directory and delete any .svclog files you find there. 3. In Visual Studio 2008, ensure that TestClient is set as the startup project, and then launch the application by pressing F5. In a few seconds, the Console window appears, and the text indicates that the call was successful. 4. Press Enter to terminate the application. 5. In Solution Explorer, double-click the app.config file for the DemoService project. 6. Locate the bindings element. In this element there is a wsHttpBinding element for the SecurityDemo binding configuration. You must add the XML elements necessary to implement message-level security by giving the mode attribute in the security element a value of Message. 7. To do so, locate the security element in the wsHttpBinding element. Replace the existing element with the following:
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<security mode="Message"> </security>
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For message security to function, you must provide client credentials. 8. For this example, specify the Windows credentials by adding the following XML element between the starting and ending security tags that you just added.
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<message clientCredentialType="Windows" />
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The same configuration must be performed in the client application. 9. In Solution Explorer, double-click the app.config file for the TestClient project.
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7
Infrastructure Security
10. Locate the bindings element. In the wsHttpBinding element, replace the existing security element with the following XML:
<security mode="Message"> </security>
11. For message security to function, you must provide client credentials. As with the service, specify the Windows credentials by adding the following XML element between the starting and ending security tags that were just added:
<message clientCredentialType="Windows" />
12. Launch the application by pressing F5. In a few moments, the Console window indicates that the call is complete. 13. Press Enter to terminate the application. Now look at the two request chains. 14. Launch the Service Trace Viewer by clicking the Start button. Choose All Programs, and then select Microsoft Windows SDK v6.1. Choose Tools, and then select Service Trace Viewer. 15. In the Service Trace Viewer, choose Open from the File menu, and then browse to InstallHome>/7/Lesson2/Exercise1/<language>/Before/DemoService/bin/Debug and open the Traces.svclog file. Notice that roughly 120 message log traces were recorded in the log. The two runs are likely to be distinguishable by the Thread Id column. The first message in each group will show the unencrypted message (through the XML tab). Figure 7-1 shows the Service Trace Viewer view of this message.
Figure 7-1
An unencrypted message as seen in the Service Trace Viewer
Lesson 2: Message-Level Security
16. Compare this to the corresponding message in the second group (about the fourth or fifth from the bottom, and illustrated in Figure 7-2).
Figure 7-2
An encrypted message as seen in the Service Trace Viewer
In the first message, the Body element of the message is in clear text. However, in the second message, the Body element has been converted to an encrypted version. Exercise 2 Use a Security Context If you are making more than one call to a service, and message security is being used, it is more efficient to establish a secure conversation. In this exercise, you will configure a secure conversation. 1. Navigate to the <InstallHome>/7/Lesson2/Exercise2/<language>/Before directory and double-click the Exercise2.sln file to open the solution in Visual Studio. The solution consists of two projects. They are as follows: The DemoService project, a simple WCF service library that implements the IGetHeaders interface. This interface consists of a single method (GetHeaders) that strips a custom header out of the request and returns it to the client. The TestClient project is a Console application that generates a request for the service and displays the result in the Console window. The configuration portion of establishing a secure conversation is quite simple. 2. In Solution Explorer, double-click the app.config file for the TestClient project. 3. Locate the message element that is part of the wsHttpBinding security node. Add the following attribute to the message element:
establishSecurityContext="true"
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