Don't use domain? It's not required by RFC 2965 and the domain you supply is certainly not a valid one. As far as I know, localhost doesn't have a proper domain name.

Apache2::Cookie says to see also CGI::Cookie which says

Domain names must contain at least two periods to prevent attempts to match on top level domains like ".edu". If no domain is specified, then the browser will only return the cookie to servers on the host the cookie originated from.
I also noticed a comment in the CGI::Cookie source which says 
# IE requires the path and domain to be present for some reason.
$path   ||= "/";
# however, this breaks networks which use host tables without fully qu
+alified
# names, so we comment it out.
#    $domain = CGI::virtual_host()    unless defined $domain;

[download]
So I'm guessing that the root of your problem is an IE bug and that using a space as a domain name seems to work. Please be aware that this is a very specific kludge to a very specific problem (IE and localhost). I'm no expert on cookies but my reading of the RFC makes me think the proper value to use is .local, but I haven't tried it.

Update: Fixed the RFC number.

In reply to Re: Sending Cookies from localhost with perl by rowdog
in thread Sending Cookies from localhost with perl by martell

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