Chapter 6. HTTP Responses
Once a Web server has received an HTTP request from the client, whether valid or not, it will send an HTTP response. HTTP has allocations for handling many types of error conditions as well as other unique situations.
It is important to remember that an HTTP response completes the HTTP transaction. Many people new to Web development have a difficult time distinguishing between server-side code (code that executes on the server) and client-side code (code that executes on the client). Scripting languages such as PHP, ColdFusion, and JSP are executed on the server, and their output is included in the HTTP response. In fact, their output is the content of the HTTP response, and most modern Web scripting languages also ...
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