If you're behind you reverse proxy like varnish for instance and you webserver is running on a non-reachable port the global map doesn't work at all. get_absolute_root_url will return something like "http://domain:8080/...". With get_root_url this will be fixed.
If you're behind you reverse proxy like varnish for instance and you webserver is running on a non-reachable port the global map doesn't work at all. get_absolute_root_url will return something like "http://domain:8080/...". With get_root_url this will be fixed.