如何从我的Rack应用中删除“服务器” HTTP响应标头

Question

I am trying to remove the server information from the http response header in my ruby on rails application running on Heroku but I am stuck. Inspecting the response headers gives me:

Server:thin 1.5.0 codename Knife

Can anyone point me in the right direction?

Answer 1

This Server header is set by the Thin server when assembling the response. A recent commit adds the ability to set the Server to something else , but it doesn't look like you can totally remove it.

One thing you can do is to set the value of the Thin::VERSION contsant to nil , which results in no Server header being sent:

Thin.send :remove_const, :SERVER
Thin::SERVER = nil

The first line is to avoid the warning that would be generated when altering a constant. Now when Thin tries to set the Server header it sees it is nil and skips it , so no header is set at all.