Description
Use this filter to determine whether or not the current page is running securely (https). Useful when using a proxy server that does not set the $_SERVER[‘HTTPS’] variable.
Usage
add_filter( 'gform_is_ssl', '__return_true' );
Examples
add_filter( 'gform_is_ssl', '__return_true' );
Placement
This code should be placed in the functions.php file of your active theme.
Source Code
This filter is located in GFCommon::is_ssl() in common.php