Symfony allow do not autostart session before authentication (implementation of earlySession())

earlysession.patch

--- security-guard/AbstractGuardAuthenticator.php.old	2019-02-21 00:26:03.833716000 +0300
+++ security-guard/AbstractGuardAuthenticator.php	2019-02-21 00:26:35.599839000 +0300
@@ -38,4 +38,12 @@
             $user->getRoles()
         );
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function earlySession()
+    {
+     	return true;
+    }
 }
--- security-http/EntryPoint/AuthenticationEntryPointInterface.php.old	2019-02-20 23:34:23.102549000 +0300
+++ security-http/EntryPoint/AuthenticationEntryPointInterface.php	2019-02-20 23:54:02.778390000 +0300
@@ -46,4 +46,18 @@
      * @return Response
      */
     public function start(Request $request, AuthenticationException $authException = null);
+
+    /**
+     * Returns whether to start session before authentication.
+     *
+     * The true value means to start session and enable PathTrait feature (ability to 
+     * redirect/forward user to initially hitted page after authentication).
+     *
+     * The false value mean no session start (disabling PathTrait feature) 
+     * before authentication avoiding generating and storing session for anonymous
+     * page hit.
+     *
+     * @return bool
+     */
+    public function earlySession();
 }
--- security-http/EntryPoint/BasicAuthenticationEntryPoint.php.old	2019-02-21 00:01:19.143114000 +0300
+++ security-http/EntryPoint/BasicAuthenticationEntryPoint.php	2019-02-21 00:01:25.764162000 +0300
@@ -40,4 +40,12 @@
 
         return $response;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function earlySession()
+    {
+     	return true;
+    }
 }
--- security-http/Firewall/ExceptionListener.php.old	2019-02-21 08:41:43.811223000 +0300
+++ security-http/Firewall/ExceptionListener.php	2019-02-21 08:38:30.617402000 +0300
@@ -179,7 +180,7 @@
             $this->logger->debug('Calling Authentication entry point.');
         }
 
-        if (!$this->stateless) {
+        if (!$this->stateless && $this->authenticationEntryPoint->earlySession()) {
             $this->setTargetPath($request);
         }
 
--- security-http/EntryPoint/FormAuthenticationEntryPoint.php.old	2019-02-21 00:02:30.708653000 +0300
+++ security-http/EntryPoint/FormAuthenticationEntryPoint.php	2019-02-21 00:17:54.238627000 +0300
@@ -60,4 +60,12 @@
 
         return $this->httpUtils->createRedirectResponse($request, $this->loginPath);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function earlySession()
+    {
+     	return true;
+    }
 }
--- security-http/EntryPoint/RetryAuthenticationEntryPoint.php.old	2019-02-21 00:18:48.238740000 +0300
+++ security-http/EntryPoint/RetryAuthenticationEntryPoint.php	2019-02-21 00:18:53.950094000 +0300
@@ -56,4 +56,12 @@
 
         return new RedirectResponse($url, 301);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function earlySession()
+    {
+     	return true;
+    }
 }