Add support for non-seekable streams

src/FileDownload.php

@@ -77,9 +77,13 @@ public function sendDownload ($filename, $forceDownload = true)
         header("Content-Transfer-Encoding: binary");
         header("Content-Length: {$this->getFileSize()}");
 
-        @ob_clean();
-
-        rewind($this->filePointer);
+        @ob_end_clean();
+
+        $meta = stream_get_meta_data($this->filePointer);
+
+        if( $meta['seekable'] == true )
+            rewind($this->filePointer);
+
         fpassthru($this->filePointer);
     }
 
@@ -159,4 +163,4 @@ public static function createFromString ($content)
 
         return new FileDownload($file);
     }
-}
+}