Rack::ForwardRequest gets caught by Rack::Recursive and redirects the current request to the app at url.

raise ForwardRequest.new("/not-found")
Methods
N
Attributes
[R] env
[R] url
Class Public methods
new(url, env={})
# File lib/rack/recursive.rb, line 13
def initialize(url, env={})
  @url = URI(url)
  @env = env

  @env[PATH_INFO] =       @url.path
  @env[QUERY_STRING] =    @url.query  if @url.query
  @env[HTTP_HOST] =       @url.host   if @url.host
  @env["HTTP_PORT"] =     @url.port   if @url.port
  @env[RACK_URL_SCHEME] = @url.scheme if @url.scheme

  super "forwarding to #{url}"
end