error_page 419 = @https;
set $is_https "0";
if ( $scheme ~* "^https") {
    set $is_https "${is_https}1";
}
if ( $request_uri ~* "api/v") {
    set $is_https "${is_https}1";
}
if ( $is_https = "0" ) {
    return 419;
}
location @https {
    rewrite ^ https://$http_host$request_uri permanent;
}