How does your legacy client *first* get the session id ?

>> the client passes session ids as a query 
>> parameter named 'session-num'


>From whence does the "session-num" query parameter come?  Does the
legacy client create a random number and use it?  Do the cgi scripts
pass it back on a login of some sort, and then from that point, the
legacy app appends it to any further queries?



> -----Original Message-----
> From: Sandy McArthur [mailto:[EMAIL PROTECTED] 
> Sent: Wednesday, April 07, 2004 10:21 AM
> To: Tomcat Users List
> Subject: Re: Custom session tracking method?
> 
> 
> > Since you're rewriting your CGI scripts as servlets, why not modify
> > them
> > to not expect the session-num parameter, and instead get 
> the session ID
> > via normal java code (request.getSession().getId())?  It's simpler,
> > standard, less code for you to write and test...
> 
> My problem is the client, which is a desktop app, doesn't support 
> cookies and uses hardcoded URIs for the cgi's. The app is 
> what uses the 
> query parameter session-num for session tracking, otherwise I would 
> prefer to use the normal session tracking semantics.
> 
> Sandy
> 
> For those who didn't see the original post on tomcat-dev:
> 
> On Apr 7, 2004, at 8:54 AM, Shapira, Yoav wrote:
> 
> > Hi,
> > The reason your approach feels ugly and fragile to you is 
> because it 
> > IS
> > ;)  Session-tracking is mandated by a couple of specs 
> (J2EE, Servlet),
> > and tomcat implements it per the spec.  If you do something 
> different,
> > you will very likely have misbehaving 3rd party libraries 
> that rely on
> > proper session tracking behavior.
> >
> > Since you're rewriting your CGI scripts as servlets, why not modify
> > them
> > to not expect the session-num parameter, and instead get 
> the session ID
> > via normal java code (request.getSession().getId())?  It's simpler,
> > standard, less code for you to write and test...
> >
> > Please continue this discussion on the tomcat-user list, not
> > tomcat-dev.
> >
> >
> > Yoav Shapira
> > Millennium Research Informatics
> >
> >
> >> -----Original Message-----
> >> From: Sandy McArthur [mailto:[EMAIL PROTECTED]
> >> Sent: Tuesday, April 06, 2004 5:05 PM
> >> To: [EMAIL PROTECTED]
> >> Subject: Custom session tracking method?
> >>
> >> Hi all,
> >>
> >> Is there a way to implement custom session tracking at the 
> container 
> >> level?
> >>
> >> I'm trying to figure out how to implement a custom session 
> tracking 
> >> method. I have a legacy client that interacts with a set of cgi 
> >> scripts and I'd like to port those scripts to servlets. 
> I'm running 
> >> into a problem because the client passes session ids as a query 
> >> parameter named 'session-num' (e.g.: 
> /update?session-num=TOKEN). The 
> >> client does not support cookies and there is no way to 
> tell it use a 
> >> JSESSIONID encoded in the path.
> >>
> >> I've followed the code as best as I can starting at 
> >> org.apache.coyote.tomcat5.CoyoteAdapter parses the JSESSIONID from 
> >> the request/cookies to where the 
> org.apache.catalina.Manager fetches 
> >> the org.apache.catalina.Session and I don't see anyway to directly 
> >> override the session tracking behavior.
> >>
> >> The best idea I currently have is to use a Valve and a 
> custom Manager 
> >> and hope none of the Manager.{create,find}Session() methods are 
> >> called before my Valve can parse the request and stuff the 
> >> "session-num" in a ThreadLocal that Manager can use when 
> returning a 
> >> Session.
> >>
> >> That feels ugly and fragile to me. Does anyone have a better 
> >> solution?
> >>
> >> Sandy McArthur
> >
> >
> >
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