On 27/10/2012 17:56, Michael-O wrote: > Am 2012-10-27 18:38, schrieb Mark Thomas: >> On 27/10/2012 16:28, Michael-O wrote: >>> Am 2012-10-27 16:57, schrieb Mark Thomas: >> >>>> The only mechanism to maintain state between HTTP requests is the HTTP >>>> session. You might be able to hack something together (in a >>>> non-portable >>>> way) on a per connection basis but that is likely to require some >>>> rather >>>> major internal surgery for Tomcat (and may be rejected by the >>>> committers). >>> >>> Is there no way to tell that subsequent n requests come from the very >>> same socket connection? HTTP is just on top of TCP/IP. Something like >>> this should be transparent to HTTP though? >>> I am curious, since I know server implementations which indeed DO >>> maintain state without HTTP sessions but I do not know how they do that. >> >> It is easy if the same request object is reused for each request >> processed for a given connection. Tomcat doesn't do this. >> >> When a connection has data to process, first a processor is taken from >> the processor pool to process the data. The processor has a request >> object that is re-used. Each time an HTTP request is processed, a >> different processor and request object may be used. (This does vary >> slightly between the different connections but lets not complicate >> things). >> >> Undoing this is the major internal surgery I was referring to. You might >> be able to add an API to store/retrieve data to/from the connection >> (similar to notes on the session, but at the connection level) and >> access this from the authenticator (that is a lot further up the stack). >> That could still end up being pretty invasive. > > OK that's a statement. Tomcat does fully support persistent connections > but there is no state information maintained, right?
Correct. Tomcat fully supports HTTP/1.1 and that requires keep-alive support. > The answer would be: There is clearly no way to store any information > for a given connection context and retrieve throughout the Tomcat code. Currently, yes. > Is this something worth being filed in Bugzilla as a longterm goal for > Tomcat 8? Sure, but without a proposed patch I suspect it will sit there for a few years and then closed as WONTFIX. With a patch, it still might not get fixed but at least you'll know for sure and if the patch isn't too invasive (for the benefit it provides) it is likely to be applied. > Thanks for the quick response, You are welcome. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
