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Document deprecation of version-specific SSL/TLS methods

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In commit 2b8fa1d56c the version-specific SSL/TLS methods were
deprecated. This patch improves the documentation of that change
by stating the deprecation more prominently in the manual page
and explaining the reason for the deprecation.

Fixes #8989

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9001)
This commit is contained in:
Dr. Matthias St. Pierre 2019-05-24 14:04:26 +02:00
parent fac9200a88
commit f308fa2573
1 changed files with 12 additions and 7 deletions
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19
doc/man3/SSL_CTX_new.pod
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@ -94,28 +94,31 @@ The actual protocol version used will be negotiated to the highest version
mutually supported by the client and the server.
The supported protocols are SSLv3, TLSv1, TLSv1.1, TLSv1.2 and TLSv1.3.
Applications should use these methods, and avoid the version-specific
methods described below.
methods described below, which are deprecated.
=item SSLv23_method(), SSLv23_server_method(), SSLv23_client_method()
Use of these functions is deprecated. They have been replaced with the above
TLS_method(), TLS_server_method() and TLS_client_method() respectively. New
code should use those functions instead.
These functions do not exist anymore, they have been renamed to
TLS_method(), TLS_server_method() and TLS_client_method() respectively.
Currently, the old function calls are renamed to the corresponding new
ones by preprocessor macros, to ensure that existing code which uses the
old function names still compiles. However, using the old function names
is deprecated and new code should call the new functions instead.
=item TLSv1_2_method(), TLSv1_2_server_method(), TLSv1_2_client_method()
A TLS/SSL connection established with these methods will only understand the
TLSv1.2 protocol.
TLSv1.2 protocol. These methods are deprecated.
=item TLSv1_1_method(), TLSv1_1_server_method(), TLSv1_1_client_method()
A TLS/SSL connection established with these methods will only understand the
TLSv1.1 protocol.
TLSv1.1 protocol. These methods are deprecated.
=item TLSv1_method(), TLSv1_server_method(), TLSv1_client_method()
A TLS/SSL connection established with these methods will only understand the
TLSv1 protocol.
TLSv1 protocol. These methods are deprecated.
=item SSLv3_method(), SSLv3_server_method(), SSLv3_client_method()
@ -131,10 +134,12 @@ Currently supported protocols are DTLS 1.0 and DTLS 1.2.
=item DTLSv1_2_method(), DTLSv1_2_server_method(), DTLSv1_2_client_method()
These are the version-specific methods for DTLSv1.2.
These methods are deprecated.
=item DTLSv1_method(), DTLSv1_server_method(), DTLSv1_client_method()
These are the version-specific methods for DTLSv1.
These methods are deprecated.
=back