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Posted to user@struts.apache.org by Oleg V Alexeev <go...@penza.net> on 2000/09/13 22:55:59 UTC
strange behavior of link tag..
Hello friends,
Can anybody explain me strange behavior of link tag? One time it
generates session id in link, another time it not generates this.
Why?
--
Best regards,
Oleg mailto:gonza@penza.net
Re[2]: strange behavior of link tag..
Posted by Oleg V Alexeev <go...@penza.net>.
Hello Craig,
Thursday, September 14, 2000, 1:36:54 AM, you wrote:
...
CRM> The bottom line -- you will see a session ID added to your links on the
CRM> first request belonging to a session, even if you have cookies enabled.
CRM> After that, they will not appear.
...
Thank you, Craig.
--
Best regards,
Oleg mailto:gonza@penza.net
Re: strange behavior of link tag..
Posted by "Craig R. McClanahan" <Cr...@eng.sun.com>.
Oleg V Alexeev wrote:
> Hello friends,
>
> Can anybody explain me strange behavior of link tag? One time it
> generates session id in link, another time it not generates this.
> Why?
>
Inside the tag, the code is calling HttpServletResponse.encodeURL() for
you. So, your question becomes "under what circumstances does
encodeURL() actually modify the URL?" Here's how Tomcat decides --
other containers are probably similar but not guaranteed to be
identical.
Let's start with the request that creates a session in the first place.
As you are creating the response, the server has no clue whether cookies
are enabled or not, so it sends the session ID *both* ways (rewriting
URLs and as a cookie). On the next request, the server checks whether
the cookie was returned. If it was, it says "aha, this client is using
cookies so I can stop using rewriting". Otherwise, it continues on
using rewriting to maintain session state.
The bottom line -- you will see a session ID added to your links on the
first request belonging to a session, even if you have cookies enabled.
After that, they will not appear.
>
> --
> Best regards,
> Oleg mailto:gonza@penza.net
Craig McClanahan
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