Sinatra: Delete Response Headers

Question

How do I configure Sinatra to omit the Date & Server HTTP response headers? I also want to omit the Content-Type & Content-Length headers when there's no response body. I'm building a REST API server for an iPhone app. My iPhone app doesn't use these headers, and I want to be as efficient as possible.

I tried adding the following after filter, but the headers are still included.

after do
  response.headers.delete('Date')
  response.headers.delete('Server')
end

Answer 1

A header can be effectively deleted from a Sinatra response by setting it to an empty string. (Not nil, but '') e.g.:

get '/myroute/nodate' do

    response.headers['Date']=''

    body="Hello, No Date header in my header!"

end # get