[FWR Media]

I identified today the main reason that my oscommerce sites had become very slow loading so below is the solution in the hope that it helps someone.

Do I have this problem?
Check the images on non secure pages, if they are loading as https then you have the same problem. Also viewing source will show that the base href for non secure pages is https.



In catalog/includes/application_top.php the following line sets the request type SSL or not.

// set the type of request (secure or not)
$request_type = (getenv('HTTPS') == 'on') ? 'SSL' : 'NONSSL';

For whatever reason my server was always returning ON even when not an SSL request.

This causes the base href of non secure pages to be https and causes ALL images to load as https://www.mysite.com/thisimage.php causing massive slowdown.

Changing the line to ...

// set the type of request (secure or not)
$request_type = (getenv('SERVER_PORT') == '443') ? 'SSL' : 'NONSSL';

Works, at least on my server.

Hope this helps someone.

[FWR Media]

it is also necessary to make this change in ...

catalog/includes/functions/general.php

tep_redirect

if ( (ENABLE_SSL == true) && (getenv('HTTPS') == 'on') ) { // We are loading an SSL page

change to

if ( (ENABLE_SSL == true) && (getenv('SERVER_PORT') == '443') ) { // We are loading an SSL page