Include COOKIE header in request headers

> Cookies *are* available in $_COOKIE, and hence also the cookie params, but
> there may be times you want raw access to the header. There's no good
> reason to omit the header from the request.
-- @weierophinney

Author: simensen

src/ServerRequestFactory.php

@@ -198,11 +198,6 @@ public static function marshalHeaders(array $server)
     {
         $headers = [];
         foreach ($server as $key => $value) {
-            if (strpos($key, 'HTTP_COOKIE') === 0) {
-                // Cookies are handled using the $_COOKIE superglobal
-                continue;
-            }
-
             if ($value && strpos($key, 'HTTP_') === 0) {
                 $name = strtr(substr($key, 5), '_', ' ');
                 $name = strtr(ucwords(strtolower($name)), ' ', '-');

test/ServerRequestFactoryTest.php

@@ -69,6 +69,7 @@ public function testMarshalsExpectedHeadersFromServerArray()
         ];
 
         $expected = [
+            'cookie' => 'COOKIE',
             'authorization' => 'token',
             'content-type' => 'application/json',
             'accept' => 'application/json',