Thanks for the poundctl pointer.
The application is classic ASP.
I tried using the ASP session cookie before and it did not work because the value of the cookie keeps changing and this is why I injected my own cookie with the IP address as the value.
 
It works fine in the sense that it achieves session affinity but I am not seeing close to evenly distributed balancing.
 
> Date: Tue, 27 Oct 2009 16:09:22 -0400
> From: aespitia@castleworldwide.com
> To: pound@apsis.ch
> Subject: RE: [Pound Mailing List] how does session cookie work...
>  
> If this is developed in .net, you can use the aspnetsessionid like in
> the following thread:
>
> http://www.apsis.ch/pound/pound_list/archive/2007/2007-07/1184948236000/
> index_html?fullMode=1185006949000
>
> I'd assume other languages have a similar feature.
>
> I think poundctl will show you the mapping of sessions to backends.
>
> --Alfonso
>
>
> -----Original Message-----
> From: Patrick Ma [mailto:cgeyma@hotmail.com]
> Sent: Tuesday, October 27, 2009 3:00 PM
> To: Pound Mailing List
> Subject: [Pound Mailing List] how does session cookie work...
>
>
> Hi,
>
>
>
> I have defined 1 service with 3 backends.
>
> Session is tracked by cookie.
>
>
>
> At login time of the backend, each backend sets a cookie with a value of
> its IP address.
>
>
>
> My question is WHEN does Pound set its mapping of cookie value and
> backend server.
>
>
>
> Is this correct?
>
> client login request (no cookie yet) --> pound (round robin because
> of no cookie) --> backend
>
> backend (set cookie) --> pound (see cookie and map cookie value to
> backend) --> client
>
>
>
> What if I just restarted pound and the cookie value and backend mapping
> is gone.
>
>
>
> client request (with cookie) --> pound (see cookie but no mapping. so
> round robin. now does pound map the cookie value to the backend it is
> going to?) If so, the cookie value is not necessary the backend's IP
> address.
>
>
>
> I am asking this because I am see the cookie value in the HTTP header
> but pound is not sending the request to the backend I am expecting based
> on the IP address.
>
>
>
> Thanks.
>
>
>
> Patrick Ma
>
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