JRuby 1.7.12, as well as the current tip of JRuby's master branch, supports setting the ssl protocol version to TLS 1.1. However, it does not refer to the protocol in the same way that MRI's OpenSSL library does.

MRI 2.0 and later refer to TLS 1.1 and TLS 1.2 as :TLSv1_1 and :TLSv1_2, respectively. MRI 1.9.3 does not support either of these, but JRuby supports TLS 1.1 as :"TLSv1.1", requiring different symbols/strings to refer to TLS 1.1 depending on the chosen Ruby implementation.

An easy fix would be for JRuby support both :TLSv1_1 and :"TLSv1.1".

Split off of #1733

Expected behavior

$ ruby --version
ruby 2.0.0p451 (2014-02-24 revision 45167) [x86_64-darwin12.5.0]

$ ruby -ropenssl -e 'p OpenSSL::SSL::SSLContext.new.ssl_version=:"TLSv1_1"'
:TLSv1_1

Observed behavior

$ jruby -ropenssl -e 'p OpenSSL::SSL::SSLContext.new.ssl_version=:"TLSv1_1"'
OpenSSL::SSL::SSLError: unknown SSL method `TLSv1_1'.
  ssl_version= at org/jruby/ext/openssl/SSLContext.java:355
        (root) at -e:1

$ jruby -ropenssl -e 'p OpenSSL::SSL::SSLContext.new.ssl_version=:"TLSv1.1"'
:"TLSv1.1"