have the applet duplicate the server session scope in its own applet memory
space.
Instead, it sounds like you just want to share the session scope from the
applet such that if the applet makes an http call to the ColdFusion server
and the applet passes the appropriate session id tokens that the server will
see the applet and the browser as one and the same session. Yes, this can be
done so long as the applet sends the session token back to the server with
each response.
Example follows of HTTP Request and Response from a browser having cookies
disabled and a server using CF J2EE Sessions and links using
URLSessionFormat( ).
- - - - - - - - - - - - - - - - - - - - - - - -
1st Req/Resp, Session Starts
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
GET /test/ HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/x-shockwave-flash, */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR
1.1.4322)
Host: serat03:8102
Connection: Keep-Alive
HTTP/1.0 200 OK
Set-Cookie: CFID=300;expires=Fri, 23-Jun-2034 15:04:34 GMT;path=/
Set-Cookie: CFTOKEN=17617117;expires=Fri, 23-Jun-2034 15:04:34 GMT;path=/
Set-Cookie: JSESSIONID=0230234380700$14H$5F$TR;path=/
Date: Wed, 30 Jun 2004 15:05:07 GMT
Content-Language: en-US
Content-Type: text/html; charset=UTF-8
Server: JRun Web Server
{data here ... }
- - - - - - - - - - - - - - - - - - - - - - - -
In the above, the session was started and 3 session tokens were set, CFID,
CFTOKEN, JSESSIONID as session-level cookies.
- - - - - - - - - - - - - - - - - - - - - - - -
2nd Req/Resp, Session Exists
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
GET /test/index.cfm;jsessionid=0230234380700$14H$5F$TR HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/x-shockwave-flash, */*
Referer: http://serat03:8102/test/ <http://serat03:8102/test/>
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR
1.1.4322)
Host: serat03:8102
Connection: Keep-Alive
Cookie: CFID=300; CFTOKEN=17617117; JSESSIONID=0230234380700$14H$5F$TR
HTTP/1.0 200 OK
Date: Wed, 30 Jun 2004 15:05:53 GMT
Content-Language: en-US
Content-Type: text/html; charset=UTF-8
Server: JRun Web Server
{data here ... }
- - - - - - - - - - - - - - - - - - - - - - - -
In the above, the browser returned the session-level cookies in the header
and the JSESSIONID was passed in the URL because this example was using
URLSessionFormat around links.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3rd Req/Resp,
Initiated in browser with Copy/Paste of URL
Session Exists and is Shared from 2nd browser
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
GET /test/index.cfm;jsessionid=0230c35fd150$AD$A7$9TR HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/x-shockwave-flash, */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR
1.1.4322)
Host: serat03:8102
Connection: Keep-Alive
Cookie: CFID=300; CFTOKEN=17617117
HTTP/1.0 200 OK
Date: Wed, 30 Jun 2004 15:07:24 GMT
Content-Language: en-US
Content-Type: text/html; charset=UTF-8
Server: JRun Web Server
{data here ... }
- - - - - - - - - - - - - - - - - - - - - - - -
In the above 3rd Rq/Resp pair, I copied the URL, opened a new browser and
pasted it in. This new browser would normall be assigned a new session if
the JSESSIONID was not used on the URL, but since it was this new browser
was able to share the session of the first browser (note the JSESSIONID was
accepted and a new one was not reset by the server response).
In fact, I copied the URL to a new browser on a different machine which
already had CFID/CFTOKEN but I pasted the same URL with JSESSIONID and I was
able to share the same session from another machine. To me, this
demonstrates that the J2EE Session can be shared between multiple HTTP
clients on multiple locations, and this should hold true whether the client
is an applet or a browser.
HTH,
Steven Erat
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