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The Java Workshop
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With HTTP, a client application sends a specially formatted request to a server and then awaits a response. Technically, HTTP is a stateless protocol. This means that the server is not required to maintain any state information related to the client. Each client request can be treated individually as a new operation. The server does not need to store client-specific information.
Many servers do maintain some sort of state across multiple requests, though, such as when you make a purchase online, and the server needs to store the products you have selected; however, the basic protocol does not require this.
HTTP is a textual protocol (with allowances for compression). An HTTP request includes the following parts:
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