Make local_request? to returns true when facing ::1 IPv6 address [#3257 status:resolved]

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

actionpack/lib/action_dispatch/middleware/show_exceptions.rb

@@ -20,7 +20,7 @@ module ActionDispatch
   # * :exception - The exception raised;
   #
   class ShowExceptions
-    LOCALHOST = '127.0.0.1'.freeze
+    LOCALHOST = ['127.0.0.1', '::1'].freeze
 
     RESCUES_TEMPLATE_PATH = File.join(File.dirname(__FILE__), 'templates')
 
@@ -118,7 +118,7 @@ def rescue_action_in_public(exception)
 
       # True if the request came from localhost, 127.0.0.1.
       def local_request?(request)
-        request.remote_addr == LOCALHOST && request.remote_ip == LOCALHOST
+        LOCALHOST.any?{ |local_ip| request.remote_addr == local_ip && request.remote_ip == local_ip }
       end
 
       def status_code(exception)

actionpack/test/dispatch/show_exceptions_test.rb

@@ -53,19 +53,21 @@ class ShowExceptionsTest < ActionController::IntegrationTest
 
   test "rescue locally from a local request" do
     @app = ProductionApp
-    self.remote_addr = '127.0.0.1'
+    ['127.0.0.1', '::1'].each do |ip_address|
+      self.remote_addr = ip_address
 
-    get "/"
-    assert_response 500
-    assert_match /puke/, body
+      get "/"
+      assert_response 500
+      assert_match /puke/, body
 
-    get "/not_found"
-    assert_response 404
-    assert_match /#{ActionController::UnknownAction.name}/, body
+      get "/not_found"
+      assert_response 404
+      assert_match /#{ActionController::UnknownAction.name}/, body
 
-    get "/method_not_allowed"
-    assert_response 405
-    assert_match /ActionController::MethodNotAllowed/, body
+      get "/method_not_allowed"
+      assert_response 405
+      assert_match /ActionController::MethodNotAllowed/, body
+    end
   end
 
   test "localize public rescue message" do