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Communicating with a WebObjects application involves the following processes:

• An HTTP server. Any HTTP server that uses the Common Gateway Interface (CGI), the Netscape Server API (NSAPI), or the Internet Server API (ISAPI).

• A WebObjects adaptor. Acts as an intermediary between WebObjects applications and HTTP servers. Adaptors insulate applications from server interfaces by handling all server communication. Simply by switching adaptors, you use a different HTTP server and a different server interface without modifying application code.

• A WebObjects application executable. The application executable receives incoming requests and responds to them, usually by returning a dynamically generated HTML page.
  
  Figure 3. Chain of Communication between Browser and WebObjects

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