IE 8 - invalid auth cookie when printing mail with embedded image part

[jeanderam]

IE7 bug
When trying to print a mail with embedded image :

• printing windows is correctly display and also the embedded image
• but when IE7 is calling the image part we can see in log: invalid auth cookie sent

When the user close the printing window and goes back to the main roundcube window and make an action, the user is disconnected and redirected to the login page.

Printing mail without embedded image works well with IE 7.

Printing mail with embedded image works well with IE 8 and Firefox.

[alec]

Does it happen when you open Roundcube in first tab of the browser only (check with Roundcube in 2nd tab)? What IE7 version? What PHP version?

[jeanderam]

Sorry I've made a mistake. The Bug is on IE8 not IE7.

Works well with IE7, IE9, firefox.

Bug happen, no matter the tab position

IE8 version: 8.0.6001.18702
PHP version : 5.2.10

Bug only appears when IE8 use a proxy.pac (or a proxy host/port configuration).

Bug also reproductible when proxy.pac tell IE8 to make a direct connection.

Sample of proxy.pac to reproduce te problem

function FindProxyForURL(url, host) {
        return "DIRECT";
}

To summarize:
IE8 + proxy + print mail with embedded image makes "invalid auth cookie sent" and session logout on the main rc logout

Perhaps it's more a IE8 bug than a roundcube bug.

[alec]

It's IE issue. There are other known similiar issues eg. in IE9:

policy that affect the regoular printing functionality of roundcube is "Site to 
Zone assignment List" under "Computer Configuration\Policies\Administrative 
Templates\Windows Components\Internet Explorer\Internet Control Panel\Security 
Page". If you set roundcube address or domain under "Intranet Zone" (set to 1), 
you will encounter the log-off issue on MSIE after printing a message with 
inline images.