Merge branch '3.4'

* 3.4: (26 commits)
  [Routing] Fix resource miss
  [Security] Fixed auth provider authenticate() cannot return void
  [FrameworkBundle][Serializer] Move DateIntervalNormalizer definition to xml
  declare argument type
  Improving annotation loader message
  [FrameworkBundle][Serializer] Move normalizer/encoders definitions to xml file & remove unnecessary checks
  Update UPGRADE-4.0.md
  streamed response should return $this
  $isClientIpsVali is not used
  [WebServerBundle] Prevent commands from being registered by convention
  content can be a resource
  Adding the Form default theme files to be warmed up in Twig's cache
  Remove BC Break label from `NullDumper` class
  Username and password in basic auth are allowed to contain '.'
  Remove obsolete PHPDoc from UriSigner
  [Serializer] YamlEncoder: throw if the Yaml component isn't installed
  [Serializer] ObjectNormalizer: throw if PropertyAccess isn't installed
  [PropertyInfo] Add support for the iterable type
  pdo session fix
  Fixed pathinfo calculation for requests starting with a question mark.  - fix bad conflict resolving issue  - port symfony/symfony#21968 to 3.3+
  ...

Author: nicolas-grekas

Constraints/UrlValidator.php

@@ -23,7 +23,7 @@ class UrlValidator extends ConstraintValidator
 {
     const PATTERN = '~^
             (%s)://                                 # protocol
-            (([\pL\pN-]+:)?([\pL\pN-]+)@)?          # basic auth
+            (([\.\pL\pN-]+:)?([\.\pL\pN-]+)@)?      # basic auth
             (
                 ([\pL\pN\pS-\.])+(\.?([\pL\pN]|xn\-\-[\pL\pN-]+)+\.?) # a domain name
                     |                                                 # or

Tests/Constraints/UrlValidatorTest.php

@@ -116,6 +116,9 @@ public function getValidUrls()
             array('http://xn--d1abbgf6aiiy.xn--p1ai/'),
             array('http://☎.com/'),
             array('http://username:[email protected]'),
+            array('http://user.name:[email protected]'),
+            array('http://username:[email protected]'),
+            array('http://user.name:[email protected]'),
             array('http://[email protected]'),
             array('http://symfony.com?'),
             array('http://symfony.com?query=1'),