It's technically possible that cookies get shared accros domains,
setting the cookie domaine to .mydomain.com. However, it will be of no
help to you, because each subdomain runs it's own set of webapps in
tomcat. The session can't be shared across webapps. If you need to
shared datas with your subdomain, you would need a way to pass an
identifier (a cookie) accross domains your self and get yourself shared
datas from some common repository of data (a database for example).
As for just authentification, a valve like the signle sign on valve
could be useful. But valves won't magically make your session datas shared.
Steve Parker a écrit :
Guys,
I am using several sub-domains that all point to the same app (they
cause different content to be displayed, depending on the
sub-domain). For example, I have:
content1.myapp.com
content2.myapp.com
content3.myapp.com
..etc...
I need the session data to be shared across these subdomains, so that
when a user is clicking around the app, crossing across sub-domains,
they won't lose the session state (e.g., if they're logged in, etc).
I understand that Tomcat uses session cookies to associate server
session with the client request. And I understand that the default
behavior of this causes these session cookies to be specific to a
domain/sub-domain.
My question:
How can I make the session cookies get written so that they are
relevant to ALL sub-domains under the main domain. I have read a few
things that say that if you set the domain of the cookie to be
".mydomain.com", it will be associated with all sub-domains of that
primary domain. But, not sure how to do this since tomcat has some
built in way of setting these cookies... I saw something with valves,
but need more info.
Any help here, or suggestions for a different approach altogether for
sharing session state across sub-domains, would be very much appreciated.
thx,
steve
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