Forum Discussion

Kevin_Davies_40's avatar
Kevin_Davies_40
Icon for Nacreous rankNacreous
Sep 19, 2017

Multiple Cookies/Sessions same endpoint

I have a rather unique issue. To access a backend service they come into the VS on a special URL eg. /sendto?mydept=24&myplace=23. I then issue them with an encrypted cookie, lets call it "dst" for e...
application delivery
iRules
LTM
  • Kevin_Davies_40's avatar
    Kevin_Davies_40
    Sep 19, 2017

    Solved.

    Session cookies are automatically bound to the site from which they came. I can have 10 cookies of the same name each from a different site and the browser will present the right cookie depending on the site I am going to access. To solve my problem above will use different site names for each session from the same user.

    mysite.virtualserver.com A X.X.X.X
mysite1 CNAME mysite
mysite2 CNAME mysite
mysite3 CNAME mysite
mysite4 CNAME mysite
mysite5 CNAME mysite

    Where X.X.X.X is address of the virtual server handling 100 web management interfaces behind it using the iRule outlined above to route traffic. The above supports 6 concurrent sessions from the same end user.

Kevin_Davies_40's avatar
Kevin_Davies_40
Icon for Nacreous rankNacreous
Sep 19, 2017

Cannot share iRule but here is pseudo code.

 

--- pseudo code ---
if /backendselection lookup destination address
  encrypt destination address
  create headers to set cookie with encrypted address
  respond with 302 redirect and headers
  exit irule.

if cookie not found
  reject connection

if decrypt fails
  reject connection

get ip address from decrypted cookie
send connection to backend address
--- end pseudo code ---