ASP.NET—How It Works

Figure 25.1 depicts the static model for how a browser and Web server communicate. In ASP.NET, some extra steps occur on the server side. Figure 25.2 illustrates this process.

Figure 25.2. ASP.NET Browser/Web Server communication.

To the client, the process is the same: The client, or browser, makes a request to the server. Upon receiving the request, the server—IIS in this case—determines that the client is requesting an ASP.NET page by its (.aspx) extension. IIS then sends the Web page to a separate ISAPI server, aspnet_isapi.dll. This server sends the page to an ASP.NET Worker Process, aspnet_wp.exe ...

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