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Hypertext Transfer Protocol - HTTP/1.0

5. Request

A request message from a client to a server includes, within the first line of that message, the method to be applied to the resource requested, the identifier of the resource, and the protocol version in use. For backwards compatibility with the more limited HTTP/0.9 protocol, there are two valid formats for an HTTP request:

Request	=	Simple-Request | Full-Request
Simple-Request	=	"GET" SP Request-URI CRLF
Full-Request	=	Request-Line		; Section 5.1
		*(	General-Header	; Section 4.3
		|	Request-Header	; Section 5.4
		|	Entity-Header )	; Section 7.1
		[ Entity-Body ]		; Section 7.2
If an HTTP/1.0 server receives a Simple-Request, it must respond with an HTTP/0.9 Simple-Response. An HTTP/1.0 client capable of receiving a Full-Response should never generate a Simple-Request.

5.1 - Request-Line
5.2 - Method
5.3 - Request-URI
5.4 - Request Header Fields

T. Berners-Lee, R. T. Fielding, H. Frystyk Nielsen - 12 MAR 95

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