def get_handler(preferred_handler_name = nil)
      servers = %w(puma mongrel thin webrick)
      servers.unshift(preferred_handler_name) if preferred_handler_name

      handler, server_name = detect_valid_handler(servers)

      if preferred_handler_name && server_name != preferred_handler_name
        puts "Handler '#{preferred_handler_name}' not found, using fallback ('#{handler.inspect}')."
      end
      handler
    end
def get_handler(preferred_handler_name = nil)
      servers = %w(puma mongrel thin webrick)
      servers.unshift(preferred_handler_name) if preferred_handler_name

      handler, server_name = detect_valid_handler(servers)

      if preferred_handler_name && server_name != preferred_handler_name
        puts "Handler '#{preferred_handler_name}' not found, using fallback ('#{handler.inspect}')."
      end
      handler
    end
Get the actual handler for use in the server
 Will always return a handler, it will try to use the fallbacks