We recently upgraded our site to use Drupal 7. Previously we were using Drupal 6. In the testing phase, the Drupal 7 instance was available at ports 8000 and 8443 of the main domain, while Drupal 6 was on the defaults, i.e.:

That worked fine for the testing phase; we were able to log in to each site and restrict D7 access to our internal network. Once we went live, we switched the ports, i.e.:

This is working in terms of production traffic, so the new D7 site is working fine. However, when we try to log in on the old D6 site for reference, we're redirected to and logged in on the D7 site. That is, operating to https://www.example.com:8443/user and logging in results in being directed to https://www.example.com/user/foo/bar, successfully logged in. Going back to the D6 site (on 8443) shows that we are not logged in there.

I thought it could be related to the cookie domain we were using (.example.com), which seemed a stretch, but removing that didn't help. I also thought it might be a base URL problem, though we have no base URL configured. The secure pages base URLs are configured with the port numbers.

Does anyone know or have an idea as to why this is happening?

I have a feeling that it's a simple thing I've overlooked in our configuration.

HTTPS is enforced on both sites by the Secure Pages module.

EDIT: we think we narrowed it down to the login form submission. The form appears to be submitted to the main domain, without the port. That's logging us in on the wrong site and preventing us from logging in on the D6 one. Why the form would submit without the port and how to fix it is now the issue.

  • OK, OK, but what are you using to enforce https? Module? Apache config? Sorry if you already said that, I just don't see it in the question.
    – Mołot
    Jul 13, 2015 at 19:55
  • @Mołot: fairly certain we narrowed down the cause to login form. I don't think it's related to securepages, though it's possible.
    – Fatbird3
    Jul 13, 2015 at 23:01
  • What do you have the base URL in your settings.php set as? Jul 14, 2015 at 0:31
  • @burnsjeremy: We've tried multiple things; $base_url = 'https://www.example.com:8443';, $base_url = 'http://www.example.com';, no base URL, etc.
    – Fatbird3
    Jul 14, 2015 at 0:36
  • And when you made every change you ensured you cleared the cache :) if you didn't the forms or page could be cached for Drupal 7 especially. Jul 14, 2015 at 0:39

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