I'm using a WFS protocol on Vector layer. also I'm working on 2 servers, tomcat (to deploy GeoServer) and Apache web server(because i use php)
I have an HTML page works on Tomcat and login.php and another php files on Apache web server
the problem is the session id changes every request.. so i got the "undefined user id" error
but when i put all my files on Apache.. i got the same session id