That test actually does do what I would expect to find the bug if it were there. So, nice find. The report here, however, is from rare cases of swapping so it might be a highly intermittent problem that's hard to trigger or requires a fatal at a different point in the request cycle or one related to a specific server implementation. I provided an example not too long ago of a naïve test that would appear to be right but miss intermittent bugs: Re: why Test::More?. That session stealing test ought to be run in parallel with 10 agents, stutter-timed, for hundreds of requests to feel "bomb-proof" to me because that's closer to what can happen in the wild.

My point was it's not a good idea to have a persistent/cache without having it initialized in a known state at the top of all request cycles, as the other two persistent/cache $VARS wisely are.

In reply to Re^3: Security: Dancer Session cookie swap by Your Mother
in thread Security: Dancer Session cookie swap by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.