Class: Falcon::Middleware::Redirect

Inherits:
Protocol::HTTP::Middleware
  • Object
show all
Defined in:
lib/falcon/middleware/redirect.rb

Overview

A HTTP middleware for redirecting a given set of hosts to a different endpoint. Typically used for implementing HTTP -> HTTPS redirects.

Instance Method Summary collapse

Constructor Details

#initialize(app, hosts, endpoint) ⇒ Redirect

Initialize the redirect middleware.



27
28
29
30
31
32
 
# File 'lib/falcon/middleware/redirect.rb', line 27

def initialize(app, hosts, endpoint)
  super(app)
  
  @hosts = hosts
  @endpoint = endpoint
end

Instance Method Details

#call(request) ⇒ Object

Redirect the request if the authority matches a specific host.



45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
 
# File 'lib/falcon/middleware/redirect.rb', line 45

def call(request)
  if host = lookup(request)
    if @endpoint.default_port?
      location = "#{@endpoint.scheme}://#{host.authority}#{request.path}"
    else
      location = "#{@endpoint.scheme}://#{host.authority}:#{@endpoint.port}#{request.path}"
    end
    
    Console.info(self, "Redirecting incoming request...", request: request, location: location)
    
    return Protocol::HTTP::Response[301, [["location", location]], []]
  else
    super
  end
end

#lookup(request) ⇒ Object

Lookup the appropriate host for the given request.



36
37
38
39
40
41
 
# File 'lib/falcon/middleware/redirect.rb', line 36

def lookup(request)
  # Trailing dot and port is ignored/normalized.
  if authority = request.authority&.sub(/(\.)?(:\d+)?$/, "")
    return @hosts[authority]
  end
end