"Caldarale, Charles R" <chuck.caldar...@unisys.com> wrote in message news:99c8b2929b39c24493377ac7a121e21f9680850...@usea-exch8.na.uis.unisys.com... >> From: André Warnier [mailto:a...@ice-sa.com] >> Subject: Re: [OT - question] Limit user sessions in tomcat >> >> It would seem that there ought to be some low-level response-direction >> socket flag that should be available, to tell whether the receiving end >> has gone, without actually having to send anything from a higher-level >> code module. But getting to that low-level socket data does not seem >> to be so easy in Java, is it ? > >It's not hard in Java (Socket.getRemoteSocketAddress() or >Socket.isConnected() should work), but there's nothing in >the servlet spec >that allows a servlet thread to obtain for that information. Ideally, the >container (Tomcat) would >asynchronously monitor the socket status and set >some flag in the Request object for the webapp code to examine at >its >leisure. Might also be able to implement this with a new form of listener. > >I haven't looked at the Servlet 3 spec to see if anything is in there for >this rather common problem. >
The Servlet 3 spec has something close: Asynchronous requests (which are sort of like Comet in TC 6). It's more designed to allow the servlet to push content to the client (think a JavaScript progress bar). > - Chuck > > >THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY >MATERIAL and is >thus for use only by the intended recipient. If you >received this in error, please contact the sender and delete the e->mail >and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
