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TCP/IP Guide by Charles M. Kozierok

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Chapter 81. HTTP MESSAGES, METHODS, AND STATUS CODES

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As you saw in the previous chapter, the Hypertext Transfer Protocol (HTTP) is entirely oriented around the sending of client requests and server responses. These take the form of HTTP messages sent between clients and servers. As with all protocols, HTTP uses a special format that dictates the structure of both client Request messages and server Response messages. Understanding how these messages work is a big part of comprehending HTTP as a whole.

In this chapter, I describe the messages used by HTTP and the specific commands and responses issued by clients and servers. I begin with a look at ...

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