# File lib/rack/handler/webrick.rb, line 8
 8:       def self.run(app, options={})
 9:         options[:BindAddress] = options.delete(:Host) if options[:Host]
10:         @server = ::WEBrick::HTTPServer.new(options)
11:         @server.mount "/", Rack::Handler::WEBrick, app
12:         yield @server  if block_given?
13:         @server.start
14:       end