commit 8364547d29ced3c00f11510817c0796b6b175635
author Maxim Dounin <mdounin@mdounin.ru> Mon Jul 16 17:47:18 2018 +0300
committer Maxim Dounin <mdounin@mdounin.ru> Mon Jul 16 17:47:18 2018 +0300
tree 0386cb0abacc2c71c6acf2eaa7db180f06d40e4c
parent 4544c5065a6b7436ea18afa34b5197713b64fab5

SSL: logging levels of "unsupported protocol", "version too low".

Starting with OpenSSL 1.1.0, SSL_R_UNSUPPORTED_PROTOCOL instead of
SSL_R_UNKNOWN_PROTOCOL is reported when a protocol is disabled via
an SSL_OP_NO_* option.

Additionally, SSL_R_VERSION_TOO_LOW is reported when using MinProtocol
or when seclevel checks (as set by @SECLEVEL=n in the cipher string)
rejects a protocol, and this is what happens with SSLv3 and @SECLEVEL=1,
which is the default.

There is also the SSL_R_VERSION_TOO_HIGH error code, but it looks like
it is not possible to trigger it.