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Chapter 17. HTTP > Client Requests

17.1. Client Requests

Client requests are broken into three sections. The first line of a message always contains an HTTP command called a method, a URI that identifies the file or resource the client is querying, and the HTTP version number. The second section of a client request contains header information, which provides information about the client and the data entity it is sending the server. The third part of a client request is the entity body, the data being sent to the server.

A Uniform Resource Identifier (URI) is a general term for all valid formats of addressing schemes supported on the World Wide Web. The one in common use now is the Uniform Resource Locator (URL) addressing scheme. See Chapter 1 for more information on URLs.


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