WordPress on Azure App Service via nginx (require any X-FORWARDED headers)

wp-config.php

if ( array_key_exists( "HTTP_X_FORWARDED_SERVER", $_SERVER ) ) {
    if ( ! empty( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https' ) {
       $_SERVER['HTTPS']='on';
    }
    define( "WP_SITEURL", "http://" . $_SERVER["HTTP_X_FORWARDED_SERVER"] );
    define( "WP_HOME", "http://" . $_SERVER["HTTP_X_FORWARDED_SERVER"] );
    $_SERVER['HTTP_HOST'] =  $_SERVER["HTTP_X_FORWARDED_SERVER"];
    $_SERVER['SERVER_NAME'] =  $_SERVER["HTTP_X_FORWARDED_SERVER"];
} else {
    define( "WP_SITEURL", "http://yoursite.azurewebsites.net" );
    define( "WP_HOME", "http://yoursite.azurewebsites.net" );
}