    # File lib/merb-core/rack/handler/mongrel.rb, line 36
            def self.run(app, options={})
              @server = ::Mongrel::HttpServer.new(options[:Host] || '0.0.0.0',
                                                 options[:Port] || 8080)
              @server.register('/', ::Merb::Rack::Handler::Mongrel.new(app))
              yield @server  if block_given?
              @server.run.join
            end