Class: Rack::NonCache::Engine

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/noncache/engine.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(backend, options) {|_self| ... } ⇒ Engine

Returns a new instance of Engine.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/rack/noncache/engine.rb', line 7

def initialize(backend, options)
  @backend = backend
  whitelist = options[:whitelist]
  blacklist = options[:blacklist]
  yield self if block_given?
end

Instance Attribute Details

#blacklist ⇒ Object

Returns the value of attribute blacklist.



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# File 'lib/rack/noncache/engine.rb', line 5

def blacklist
  @blacklist
end

#whitelist ⇒ Object

Returns the value of attribute whitelist.



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# File 'lib/rack/noncache/engine.rb', line 5

def whitelist
  @whitelist
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/noncache/engine.rb', line 14

def call(env)
  # execute the request using our backend
  status, headers, response = @backend.call(env)

  if target_path? env['REQUEST_URI']

    headers['HTTP_CACHE_CONTROL'] =
      'no-cache, max-age=0, must-revalidate, no-store, private, '

    # Set standard HTTP/1.0 no-cache header.
    headers['HTTP_CACHE_CONTROL'] +=
      'max-stale=0, post-check=0, pre-check=0, ' +
      'no-cache=\"Set-Cookie, Set-Cookie2\"'

    # Set standard HTTP/1.1 no-cache header.
    headers['HTTP_PRAGMA'] = 'no-cache'

    # Set to expire far in the past. Prevents caching at the proxy server
    headers['HTTP_EXPIRES'] = Time.now.httpdate

    # Deprecated header
    headers['HTTP_KEEP_ALIVE'] = 'timeout=3, max=993'

    headers['X-Content-Type-Options'] = 'nosniff'
  end

  [status, headers, response]
end