Rack::XServedBy

Rack::XServedBy is a Rack middleware, that adds X-Served-By HTTP header to your responses.

That is useful if load balance between many servers and want to know which one served the request.

Add this line to your application's Gemfile:

gem 'rack-x_served_by'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rack-x_served_by

In config.ru

use Rack::XServedBy

run YourApp

Or in Rails config/application.rb

module YourApp
  class Application < Rails::Application
    config.middleware.use Rack::XServedBy
  end
end  

You can configure custom hostname as:

use Rack::XServedBy, 'custom-hostname'

With example config.ru:

$ curl -v localhost:9292

* Rebuilt URL to: localhost:9292/
* Hostname was NOT found in DNS cache
*   Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 9292 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.37.1
> Host: localhost:9292
> Accept: */*
>
< HTTP/1.1 200 OK
< X-Served-By: Michals-MacBook-Pro.local
< Transfer-Encoding: chunked
* Server WEBrick/1.3.1 (Ruby/2.2.2/2015-04-13) is not blacklisted
< Server: WEBrick/1.3.1 (Ruby/2.2.2/2015-04-13)
< Date: Fri, 22 May 2015 13:37:22 GMT
< Connection: Keep-Alive
<
* Connection #0 to host localhost left intact
Hello, world%

After checking out the repo, run bin/setup to install dependencies. Then, run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release to create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

1. Fork it ( https://github.com/3scale/rack-x_served_by/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request