EventMachine.run do
  connection_opts = {
    :proxy => {
       :host => 'www.myproxy.com',
       :port => 8080,
       :authorization => ['username', 'password']
    }
  }
  http = EventMachine::HttpRequest.new('https://www.website.com/', connection_opts).get
  http.callback { }
end

EventMachine.run do
  connection_opts = {:proxy => {:host => 'www.myproxy.com', :port => 8080, :type => :socks5 }}
  http = EventMachine::HttpRequest.new('https://www.website.com/', connection_opts).get
  http.callback { }
end