Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php	(revisión: 19630)
+++ wp-includes/functions.php	(copia de trabajo)
@@ -2968,15 +2968,17 @@
  * @return bool True if SSL, false if not used.
  */
 function is_ssl() {
+    $is_ssl = false;
 	if ( isset($_SERVER['HTTPS']) ) {
 		if ( 'on' == strtolower($_SERVER['HTTPS']) )
-			return true;
+			$is_ssl = true;
 		if ( '1' == $_SERVER['HTTPS'] )
-			return true;
+			$is_ssl = true;
 	} elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
-		return true;
+		$is_ssl = true;
 	}
-	return false;
+    $is_ssl = apply_filters( 'is_ssl', $is_ssl ); 
+	return $is_ssl;
 }
 
 /**