401 after logging in on client in Chrome

[RubenVerborgh]

Scenario:

• Go to https://drive.verborgh.org/inbox/
• Log in

Expected behavior:

• 403

Current behavior:

• Firefox: 403
• Chrome: 401

[RubenVerborgh]

The cause is that Chrome does not honor the Set-Cookie from an AJAX request, so the cookie is never established.