diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index 08892ead676ac41feb8eaa4f3c209c9e1550ef96..141d1aef609b1185b1ce6049191da9ee2af050d7 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,5 +1,10 @@
 ## Rails 4.0.0 (unreleased) ##
 
+*   Fix a bug in integration tests where setting the port via a url passed to
+    the process method was ignored when constructing the request environment.
+
+    *Andrew White*
+
 *   Allow `:selected` to be set on `date_select` tag helper.
 
     *Colin Burn-Murdoch*
diff --git a/actionpack/lib/action_dispatch/testing/integration.rb b/actionpack/lib/action_dispatch/testing/integration.rb
index 1fc5933e98bd52365fd18b810c3463ca1b8582a0..ed4e88aab68c8fb7cb540e373cb3a143c36a570e 100644
--- a/actionpack/lib/action_dispatch/testing/integration.rb
+++ b/actionpack/lib/action_dispatch/testing/integration.rb
@@ -273,7 +273,7 @@ def process(method, path, parameters = nil, rack_env = nil)
           if path =~ %r{://}
             location = URI.parse(path)
             https! URI::HTTPS === location if location.scheme
-            host! location.host if location.host
+            host! "#{location.host}:#{location.port}" if location.host
             path = location.query ? "#{location.path}?#{location.query}" : location.path
           end
 
diff --git a/actionpack/test/controller/integration_test.rb b/actionpack/test/controller/integration_test.rb
index cf561d913a17703c216f1ba3ef5f0d73734dfb0f..e2239c05c7ca99b66bc294c1dee189a37f6a1220 100644
--- a/actionpack/test/controller/integration_test.rb
+++ b/actionpack/test/controller/integration_test.rb
@@ -466,6 +466,58 @@ def test_generate_url_with_controller
     assert_equal 'http://www.example.com/foo', url_for(:controller => "foo")
   end
 
+  def test_port_via_host!
+    with_test_route_set do
+      host! 'www.example.com:8080'
+      get '/get'
+      assert_equal 8080, request.port
+    end
+  end
+
+  def test_port_via_process
+    with_test_route_set do
+      get 'http://www.example.com:8080/get'
+      assert_equal 8080, request.port
+    end
+  end
+
+  def test_https_and_port_via_host_and_https!
+    with_test_route_set do
+      host! 'www.example.com'
+      https! true
+
+      get '/get'
+      assert_equal 443, request.port
+      assert_equal true, request.ssl?
+
+      host! 'www.example.com:443'
+      https! true
+
+      get '/get'
+      assert_equal 443, request.port
+      assert_equal true, request.ssl?
+
+      host! 'www.example.com:8443'
+      https! true
+
+      get '/get'
+      assert_equal 8443, request.port
+      assert_equal true, request.ssl?
+    end
+  end
+
+  def test_https_and_port_via_process
+    with_test_route_set do
+      get 'https://www.example.com/get'
+      assert_equal 443, request.port
+      assert_equal true, request.ssl?
+
+      get 'https://www.example.com:8443/get'
+      assert_equal 8443, request.port
+      assert_equal true, request.ssl?
+    end
+  end
+
   private
     def with_test_route_set
       with_routing do |set|