nginx proxy_set_header $_SERVER["HTTPS"]

with a little digging thru $_SERVER vars, it appears that nginx config of

proxy_set_header HTTPS on;

does NOT set

$_SERVER[‘HTTP’]=on

, but rather, prepends the meta key (for all proxy_set_header vars?) with "HTTP_", so that,

$_SERVER[‘HTTP_HTTPS’]=on

as I thinkg abt it, as the apache server itself is NOT serving https://, HTTPS=on would be, technically, incorrect in this scenario.

in any case, editing in,

advagg_js_cdn/advagg_js_cdn.module

– $schema = ((isset($_SERVER[‘HTTPS’]) && $_SERVER[‘HTTPS’] == ‘on’) || (isset($_SERVER[‘HTTP_X_FORWARDED_PROTO’]) && $_SERVER[‘HTTP_X_FORWARDED_PROTO’] == ‘https’)) ? ‘https’ : ‘http’;

+ $schema = ((isset($_SERVER[‘HTTPS’]) && $_SERVER[‘HTTPS’] == ‘on’) || (isset($_SERVER[‘HTTP_X_FORWARDED_PROTO’]) && $_SERVER[‘HTTP_X_FORWARDED_PROTO’ || (isset($_SERVER[‘HTTP_HTTPS’]) && $_SERVER[‘HTTP_HTTPS’] == ‘on’)] == ‘https’)) ? ‘https’ : ‘http’;

results, correctly, in,

script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"
^^^^^

 http://drupal.org/node/1072812