ssl - HTTPS version 1 vs v2 - differences -

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what major differences between https 1.x vs https 2.x? tls , ssl part came in version 2.x?

is http/2 (https://en.wikipedia.org/wiki/http/2) called https 2? http 1.1 ( https://tools.ietf.org/html/rfc2068 ) called https 1?

there no https 1.x or https 2.x. there http 1.0, http 1.1 , http/2. https means of these http protocols encapsulated inside tls connection.

the tls part same of these. there restrictions regarding protocol versions, ciphers , tls compression when using tls http/2, see rfc 7540, section 9.2 details. , make easier server know major http protocol version used inside tls connection client should use alpn tls extension tell server supports http/2.


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