本文介绍了HTTP协议从HTTP V0.9到HTTP/1.1的发展历程，包括关键改进及特性，如持久连接机制的引入及其对请求延迟的显著减少等。
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[color=darkred]The first documented version of HTTP was HTTP V0.9 (1991). [/color]
Dave Raggett led the HTTP Working Group (HTTP WG) in 1995 and wanted to expand the protocol with extended operations, extended negotiation, richer meta-information, tied with a security protocol which became more efficient by adding additional methods and header fields.
[color=darkred]RFC 1945 officially introduced and recognized HTTP V1.0 in 1996.[/color]
[color=darkred]The HTTP/1.1 standard as defined in RFC 2068 was officially released in January 1997.[/color] Improvements and updates to the HTTP/1.1 standard were released under RFC 2616 in June 1999.
In HTTP/0.9 and 1.0, the connection is closed after a single request/response pair. In HTTP/1.1 a keep-alive-mechanism was introduced, where a connection could be reused for more than one request. Such persistent connections reduce request latency perceptibly, because the client does not need to re-negotiate the TCP 3-Way-Handshake connection after the first request has been sent. Another positive side effect is that in general the connection becomes faster with time due to TCP's slow-start-mechanism.
Roy Thomas Fielding (born 1965) is an American computer scientist,[1] one of the principal authors of the HTTP specification, an authority on computer network architecture and co-founder of the Apache HTTP Server project.
[color=red]Fielding used REST to design HTTP 1.1 and Uniform Resource Identifiers (URI).[/color]
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[color=darkred]The first documented version of HTTP was HTTP V0.9 (1991). [/color]
Dave Raggett led the HTTP Working Group (HTTP WG) in 1995 and wanted to expand the protocol with extended operations, extended negotiation, richer meta-information, tied with a security protocol which became more efficient by adding additional methods and header fields.
[color=darkred]RFC 1945 officially introduced and recognized HTTP V1.0 in 1996.[/color]
[color=darkred]The HTTP/1.1 standard as defined in RFC 2068 was officially released in January 1997.[/color] Improvements and updates to the HTTP/1.1 standard were released under RFC 2616 in June 1999.
In HTTP/0.9 and 1.0, the connection is closed after a single request/response pair. In HTTP/1.1 a keep-alive-mechanism was introduced, where a connection could be reused for more than one request. Such persistent connections reduce request latency perceptibly, because the client does not need to re-negotiate the TCP 3-Way-Handshake connection after the first request has been sent. Another positive side effect is that in general the connection becomes faster with time due to TCP's slow-start-mechanism.
Roy Thomas Fielding (born 1965) is an American computer scientist,[1] one of the principal authors of the HTTP specification, an authority on computer network architecture and co-founder of the Apache HTTP Server project.
[color=red]Fielding used REST to design HTTP 1.1 and Uniform Resource Identifiers (URI).[/color]
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