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openssl: doc clarification on supported TLS versions

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Closes #3551
This commit is contained in:
Matthew Flatt 2020-12-14 13:36:25 -07:00
parent 0561d71e60
commit e90c2a2138
1 changed files with 4 additions and 2 deletions
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6
pkgs/racket-doc/openssl/openssl.scrbl
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@ -197,10 +197,10 @@ The @racket[protocol] should be one of the following:
@item{@racket['auto] : Automatically negotiates the protocol version
from those that this library considers sufficiently secure---currently
TLS versions 1.0 and higher, but subject to change.}
@item{@racket['tls] : Only TLS protocol version 1.0.}
@item{@racket['tls11] : Only TLS protocol version 1.1.}
@item{@racket['tls12] : Only TLS protocol version 1.2.}
]
Note that later TLS versions are supported, but there is no corresponding
@racket[protocol] symbol; using @racket['secure] is best and forward-compatible.
The following @racket[protocol] symbols are deprecated but still supported:
@itemlist[
@item{@racket['sslv2-or-v3] : Alias for @racket['auto]. Note that
@ -209,6 +209,8 @@ secure, so this @racket[protocol] no longer allows either of them.}
@item{@racket['sslv2] : SSL protocol version 2.0. @bold{Insecure.}
Note that SSL 2.0 support has been removed from many platforms.}
@item{@racket['sslv3] : SSL protocol version 3.0. @bold{Insecure.}}
@item{@racket['tls] : Only TLS protocol version 1.0.}
@item{@racket['tls11] : Only TLS protocol version 1.1.}
]
Not all protocol versions are supported by all servers. The