gist: 206213 - Rack middleware that redirects requests to a canonical host.- GitHub


  
    
      Ruby #
    
    
      
      
        embed
        
      
      
      
      raw
    
  
  
  
    
      
        
          
            
            1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

          
          
            
              class CanonicalHost
  def initialize(app, host=nil, &block)
    @app = app
    @host = (block_given? && block.call) || host
  end
 
  def call(env)
    if url = url(env)
      [301, { 'Location' => url }, ['Redirecting...']]
    else
      @app.call(env)
    end
  end
 
  def url(env)
    if @host && env['SERVER_NAME'] != @host
      url = Rack::Request.new(env).url
      url.sub(%r{\A(https?://)(.*?)(:\d+)?(/|$)}, "\\1#{@host}\\3/")
    end
  end
  private :url
end
Description:	Rack middleware that redirects requests to a canonical host.
Public Clone URL:	git://gist.github.com/206213.git Give this clone URL to anyone. `git clone git://gist.github.com/206213.git gist-206213`
Embed All Files:	show embed