Error establishing SSL connections: OpenSSL::SSL::SSLError: Socket closed

I have been intermittently seeing "SSLError: Socket closed" upon `connect`, trying to establish an SSL socket connection. Hard to tell whether it was just my connection or not. Then I noticed that it happens without fail upon `accept` when running WEBrick in https mode--except from Safari. I mean, Webrick starts up okay, but when I navigate to https://localhost:3000 in my browser (though, strangely, Safari works fine), it fails with the following backtrace:
—
#<OpenSSL::SSL::SSLError: Socket closed>
org/jruby/ext/openssl/SSLSocket.java:227:in `accept'
/Users/mhauck/.rvm/gems/jruby-1.6.5.1/gems/jruby-openssl-0.7.5.1.dev.ibm/lib/1.9/openssl/ssl-internal.rb:164:in `accept'
/Users/mhauck/.rvm/rubies/jruby-1.6.5.1/lib/ruby/1.9/webrick/server.rb:159:in `accept_client'
/Users/mhauck/.rvm/rubies/jruby-1.6.5.1/lib/ruby/1.9/webrick/server.rb:94:in `start'
org/jruby/RubyArray.java:1612:in `each'
/Users/mhauck/.rvm/rubies/jruby-1.6.5.1/lib/ruby/1.9/webrick/server.rb:91:in `start'
/Users/mhauck/.rvm/rubies/jruby-1.6.5.1/lib/ruby/1.9/webrick/server.rb:22:in `start'
/Users/mhauck/.rvm/rubies/jruby-1.6.5.1/lib/ruby/1.9/webrick/server.rb:81:in `start'
/Users/mhauck/.rvm/gems/jruby-1.6.5.1/gems/rack-1.2.4/lib/rack/handler/webrick.rb:13:in `run'
/Users/mhauck/.rvm/gems/jruby-1.6.5.1/gems/rack-1.2.4/lib/rack/server.rb:217:in `start'
/Users/mhauck/.rvm/gems/jruby-1.6.5.1/gems/railties-3.0.10/lib/rails/commands/server.rb:65:in `start'
/Users/mhauck/.rvm/gems/jruby-1.6.5.1/gems/railties-3.0.10/lib/rails/commands.rb:30:in `(root)'
org/jruby/RubyKernel.java:1804:in `tap'
/Users/mhauck/.rvm/gems/jruby-1.6.5.1/gems/railties-3.0.10/lib/rails/commands.rb:27:in `(root)'
org/jruby/RubyKernel.java:1047:in `require'
script/rails:59:in `(root)'
—

The failure in `connect` comes from the following code (from jtv-apns gem):
—
context = OpenSSL::SSL::SSLContext.new
context.cert = cert
context.key = pem
sock = TCPSocket.new(host, port)
ssl = OpenSSL::SSL::SSLSocket.new(sock, context)
ssl.connect
—

PS. I configured webrick to use SSL as detailed here: http://www.nearinfinity.com/blogs/chris_rohr/configuring_webrick_to_use_ssl.html