Hashing on a particular cookie value

[Paul A. Procacci]

> Thanks a lot Paul. Before I read this , I tried the following :
>
> hash_data(regsub(req.http.Cookie,"^.*?mycookie=([^;]*);*.*$" , "\1"));

Your regex differs than mine.  One negligible difference and one that
I'll focus on.  The negligible difference being the anchors "^" and "$".
They aren't necessary.

For reference, my regex was:
regsub(req.http.cookie, ".*mycookie=([^;]+);.*",

                                         ^
                                         ^

The difference is that I'm looking for a value in my regex, and you
don't care if there is a value in yours.  '+' vs '*'.

Your regex matches:
mycookie=
mycookie=a
mycookie=abc
...

My regex _doesn't_ match:
mycookie=

If you want to hash on an empty cookie, then your regex is what you
want.  Otherwise, perhaps mine is what you want.

You know your application best, and how you want to store your
data is entirely dependant upon you.  ;P

~G'Night

> I guess this should also do the trick ?
>
> Regards
>
> Soumendu
>
>

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