Server-Status 0.1
by Steve Tibbett
28-Nov-1999

Get servstat01.zip for the source and release DLL, or you can browse the contents of the zipfile.

This is an ISAPI module that will give you real-time information on
what your web server is doing.  ISAPI modules are extensions for
Microsoft's Internet Information Server, and any web server that supports
ISAPI will work with this module.

The stats it will show you are:

 1) When the web server was started
 2) Total number of hits since the server was started
 3) List of all the URLs that have been fetched (minus args) and how many times
 4) List of all the unique IP addresses that have visited your site (with hits)
 5) List of all the unique browsers (User-Agents) that have visited (with hits).
 6) Same list for all the Referers (where your hits are coming from).
 7) For the last 24 hours, how many hits you've gotten each hour.
 8) The last 100 hits on your site, with time and IP address.

All of these stats are reset any time you restart IIS.  For persistent stats,
use some sort of log analysis tool.  They're also live - they update instantly.

To install, bring up the Internet Services Manager, go into the section
where you define what ISAPI modules are loaded, and add Uptime.DLL from
the Release directory.  (This applies to IIS 5.0, and I believe 4.0 - earlier
versions required you to edit the registry; search the IIS docs for "ISAPI"
for information on how to do this).

Once it's installed, go to http://yoursite/server-status and you'll see
the real time stats!

Limitations:

 - There is currently no security on the information.  If you think this
   information is secret, then don't use this module without adding
   some sort of security.

 - Referer hits from within your site are included on the referer list.  They
   should probably be filtered.

 - Failed hits still count.

 - The code should be stable and safe from buffer overflows, but it will 
   keep allocating memory as needed.  The amount of memory used should be
   insigifnicant unless you have a huge site and a huge number of users and a
   small amount of RAM... If you run into RAM problems, try taking the DLL out
   and trying it.  If it's a problem, you can put limits on the # of referers,
   browsers and IP addresses it remembers.

Compiling:

I used Microsoft Visual Studio 6.0.  If you have VS6, you should be able to load
up the DSP file (DevStudio Project) and go.  If you have another compiler,
you probably don't have MFC so you won't be able to use it anyway!

Distribution:

This code is free; do with it what you like.  If you make any changes, I'd
appreciate it if you'd send them back to me so I can merge your changes
with mine.  Thanks.

You can contact me at stevex@home.com.  The current version will be at
http://food.dhs.org/code.