updated Download.php

Author: Shikha Mishra

app/code/Magento/Downloadable/Helper/Download.php

@@ -256,15 +256,17 @@ public function setResource($resourceFile, $linkType = self::LINK_TYPE_FILE)
             }
         }
 
-       /**
-        * check header
-        */
-
         $this->_resourceFile = $resourceFile;
-        $headers = array_change_key_case(get_headers($this->_resourceFile, 1), CASE_LOWER);
-        if(isset($headers['location'])){
-            $this->_resourceFile  = is_array($headers['location']) ? current($headers['location']): 
-                                    $headers['location'];
+        
+        /**
+        * check header for urls
+        */
+        if ($this->_linkType === self::LINK_TYPE_URL) {
+            $headers = array_change_key_case(get_headers($this->_resourceFile, 1), CASE_LOWER);
+            if(isset($headers['location'])){
+                $this->_resourceFile  = is_array($headers['location']) ? current($headers['location']): 
+                                        $headers['location'];
+            }
         }
 
         $this->_linkType = $linkType;