Re: [Tclhttpd-users] Is there a "guide" for how to use sessions?

[Jeff S. <hea...@ya...>]

Hi David,

I think when it comes to sessions and TclHttpd from
what I have read most people tend to 

roll their own even though TclHttpd has a Session
module built in. I think one of the 

reasons they don't use it is because of lack of
Documentation and examples thus your 

question.

I don't know whether the Session module is a good or
bad design but due to my lack of programming
experience I decided it would be a better experience
for me to try and figure out how it worked rather than
reinvent the wheel.

The Documentation summarises how the Session module
works and there is an snmp.tcl file in the TclHttpd
distribution that uses it. I followed this and wrote a
Username and Password database using Metakit. This is
used on a daily basis at my work and has been running
for several years. The Session module is used for
record locking and as well as serialising the write
requests to the database. This works well for Metakit
due to its concurrency limitations.

The Session module has 2 parts. The first part is used
for the Session id stuff and is stored in a state
array. The second part creates a slave interpreter and
excutes the pages in this interpreter. I followed this
approach but after I finished I realised I could have
just used the first part without the second. Refer to
http://wiki.tcl.tk/8657 for an example.

Since I used the Session module it has been enhanced
so there are probably new features available.

Kind Regards

Jeff Smith

--- David Gravereaux <dav...@po...> wrote:

> Hi,
> 
> I need to manage user sessions across different
> pages of a domain script hooked 
> into data I'll have to save/retrieve from a
> database.  I'm not sure where to begin..
> 
> Well, actually, beginning at the login page seems
> most obvious.. But I don't know 
> how to begin the back-end code for it..  Any
> pointers?
> 
> -- 
>     I'm learning real skills that I can apply
> throughout the rest of my life ...
> Procrastinating and rationalizing.  -- Calvin
> 
>
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