ean 13 check digit c# Lesson 3: How to Deploy and Publish a Web Service in Visual C#.NET

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Lesson 3: How to Deploy and Publish a Web Service
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<soap address="http://localhost/MyWebService/MyWebService.asmx" xmlns:q2="http://www.mycompany.com/" binding="q2:MyWebServiceSoap12" xmlns="http://schemas.xmlsoap.org/disco/soap/" /> </discovery>
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A discovery file is also automatically generated when you add a Web reference to your Web service from a client ASP.NET application. In this case the discovery file is placed in the App_WebReferences subdirectory of your Web services root folder.
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Using a Static Discovery File
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Another method for Web service discovery is to create your own XML-based discovery file that can reference more than one Web service. This is done by first creating the XML document that contains a discovery root element such as the one that follows:
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< xml version="1.0" encoding="utf-8" >
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<discovery xmlsns="http://schemas.xmlsoap.org/disco/">
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</discovery>
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The discovery document should contain references to service descriptions, XML Schema Definition (XSD) schemas, and any other discovery documents used by your Web service. You can add as many references as you want and can refer to more than one Web service. The following elements are used to add references in your discovery document:
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contractRef
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Used to reference one or more service descriptions with the ref attribute. The contractRef element should include an xmlns attribute that refer ences the following XML namespace: http://schemas.xmlsoap.org/disco/scl/. Used to reference one or more other discovery documents with the ref attribute.
discoveryRef
schemaRef
Used to reference one or more XML schema files with the ref attribute. This element should include an xmlns attribute that references the fol lowing XML namespace: http://schemas.xmlsoap.org/disco/schema/.
The following example is for a contractRef element that points to the WSDL document for a Web service. The example also includes a docRef attribute that references an HTML document named MyWebServiceDoc.html, which contains information about the Web service:
<contractRef xmlns="http://schemas.xmlsoap.org/disco/scl/" ref="http://www.MyCompany.com/MyWebService/MyWebService.wsdl" docRef="http://www.MyCompany.com/MyWebService/MyWebServiceDoc.html"/>
3
Configuring and Publishing XML Web Services
Using a Dynamic Discovery File
An alternative to using a static discovery file is to enable dynamic discovery for a Web service. Use this option when you want to make all Web services on a Web server dis coverable. Because dynamic discovery makes all Web services discoverable, care should be taken before enabling this option because it can represent a security risk. To enable dynamic discovery, you include an add element in the httpHandlers section of your Machine.config file on the Web server. The following code is an example of what this add element should look like:
<add verb="*" path=".vsdicso" type="System.Web.Services.Discovery.DiscoveryRequestHandler,System.Web.Services, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false"/>
The type attribute contains a reference to the DiscoveryRequestHandler class, which is the handler for all Web services using a discovery document. This class handles all the incoming requests and routes them to the appropriate discovery document with a .disco file extension.
Real World
Sara Morgan In earlier versions of Visual Studio, dynamic discovery files were handled a little differently. In the past, Visual Studio would automatically generate a dynamic discovery file for every project and put it in the root folder of the project. The file would be named the same as the project name but with a .vsdisco extension. This file included references to folders that would be excluded from a dynamic search. This method of dynamic discovery is no longer used. The process of dynamic discovery exposes all Web services beneath a requested URL. Depending on your network configuration, this can represent a security risk for your organization. Use care when deciding whether to utilize this method of discovery. I personally would recommend against it.
Lesson 3: How to Deploy and Publish a Web Service
Deploying a Web Service Application
The final step to making your Web service accessible to the outside world is to publish it out to a Web server. Because Web services are really just ASP.NET applications, they can be deployed in the same manner as traditional Web applications. You can deploy the Web service by either copying the necessary files to a virtual directory on the des tination Web server or by utilizing a setup project.
Copying the Project
To copy a project to a Web server using Visual Studio, first select the project that you want to copy in Solution Explorer. Click the Website menu and then click Copy Web Site. You should then see a split screen that displays the source Web site in the left pane and the remote Web site in the right pane. Initially, the Remote Web Site portion of the screen should be empty. Click Connect to start the copy process. In the Open Web Site dialog box, select the location to which you want to copy the project files. You can deploy the project to a folder within the file system, the local IIS Web server, an FTP site, or a Remote site. Enter whatever connection properties are necessary for the deployment destination and click Open. After the connection is made, the right pane should appear populated with folders and files from the destination server (refer to Figure 3-2). At this point you can select any files that you want to copy and click the arrow to copy the file from the source to the remote site. You will want to copy only those files that will be executed on the remote site. This includes all Web service files with an .asmx file extension as well as any configuration files, such as the Web.config file. You can also copy any discovery documents that you might have created. You do not need to copy any code files, such as those with a .vb or .cs extension, because those will be compiled into the .dll file that is created when you compile your Web service. However, you do need to copy the .dll file to the \bin directory of the virtual directory on the target Web server.
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