class Net::HTTP::Persistent::SSLReuse

def connect # :nodoc:
  D "opening connection to #{conn_address()}..."
  s = timeout(@open_timeout) { TCPSocket.open(conn_address(), conn_port()) }
  D "opened"
  if use_ssl?
    ssl_parameters = Hash.new
    iv_list = instance_variables
    SSL_ATTRIBUTES.each do |name|
      ivname = "@#{name}".intern
      if iv_list.include?(ivname) and
         value = instance_variable_get(ivname)
        ssl_parameters[name] = value
      end
    end
    unless @ssl_context then
      @ssl_context = OpenSSL::SSL::SSLContext.new
      @ssl_context.set_params(ssl_parameters)
    end
    s = OpenSSL::SSL::SSLSocket.new(s, @ssl_context)
    s.sync_close = true
  end
  @socket = Net::BufferedIO.new(s)
  @socket.read_timeout = @read_timeout
  @socket.continue_timeout = @continue_timeout if
    @socket.respond_to? :continue_timeout
  @socket.debug_output = @debug_output
  if use_ssl?
    begin
      if proxy?
        @socket.writeline sprintf('CONNECT %s:%s HTTP/%s',
                                  @address, @port, HTTPVersion)
        @socket.writeline "Host: #{@address}:#{@port}"
        if proxy_user
          credential = ["#{proxy_user}:#{proxy_pass}"].pack('m')
          credential.delete!("\r\n")
          @socket.writeline "Proxy-Authorization: Basic #{credential}"
        end
        @socket.writeline ''
        Net::HTTPResponse.read_new(@socket).value
      end
      s.session = @ssl_session if @ssl_session
      # Server Name Indication (SNI) RFC 3546
      s.hostname = @address if s.respond_to? :hostname=
      timeout(@open_timeout) { s.connect }
      if @ssl_context.verify_mode != OpenSSL::SSL::VERIFY_NONE
        s.post_connection_check(@address)
      end
      @ssl_session = s.session
    rescue => exception
      D "Conn close because of connect error #{exception}"
      @socket.close if @socket and not @socket.closed?
      raise exception
    end
  end
  on_connect
end if RUBY_VERSION > '1.9'