Kepler: thttpd

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It is straightforward to use the web server thttpd in conjunction with Kepler.
## Background on thttpd
From the [thttpd homepage](http://www.acme.com/software/thttpd):

_thttpd is a simple, small, portable, fast, and secure HTTP server with the following characteristics:_

* _Simple: It handles only the minimum necessary to implement HTTP/1.1. Well, maybe a little more than the minimum._ 
* _Small: It has a very small run-time size, since it does not fork and is very careful about memory allocation._ 
* _Portable: It compiles cleanly on most any Unix-like OS._ 
* _Fast: In typical use it's about as fast as the best full-featured servers (Apache, NCSA, Netscape). Under extreme load it's much faster._ 
* _Secure: It goes to great lengths to protect the web server machine against attacks and breakins from other sites._ 
* _It also has one extremely useful feature (URL-traffic-based throttling) that no other server currently has. Plus, it supports IPv6 out of the box, no patching required._

While all of these claims may no longer be entirely true in regards to comparisons with other web servers, its statements concerning thttpd directly are accurate.

## thttpd with Kepler
To get thttpd working with the cgi launcher from Kepler 1.1, use the following steps as a guideline.

This setup was tested on a standard linux distribution

* Install thttpd
* Make sure that thttpd is not running in a chroot jail (effectively
enabling CGI processing). See below for a sample thttpd configuration file.
* Build kepler with the configure-time option of ``--launcher=cgi``. Visit [[UNIX Installation]] for further details.
* Copy the cgi file into the cgi-bin directory
* Start producing *.lua and *.lp files, referencing them through the
cgi redirect.

As an example, here is a sample config file and directory setup:

### thttpd.conf
 
    port=80
    user=nobody
    dir=/var/thttpd/www
    nochroot
    cgipat=/cgi-bin/**
    logfile=/var/log/thttpd.log
    pidfile=/var/run/thttpd.pid

### Sample directory structure
 
    /usr/sbin/
              thttpd

/etc/
         thttpd.conf

/var/thttpd/www/
                   status.lp
                   cgi-bin/
                           cgi

Start thttpd along the lines with something like
    /usr/sbin/thttpd -C /etc/thttpd.conf

Bring up in the web browser ``http://your.domain.name/cgi-bin/cgi/status.lp``

This brings up the ability to run on some of these small embedded Linux devices like the Linksys NSLU-2 (affectionately known as the slug); they have a default customized version of thttpd running; it might be dead simple to get it extended using Kepler.

Additionally, one could investigate how to operate in a chroot jail, to really have a level of protection. There is documentation of running CGI inside chroot; I'm guessing that in addition to those steps, kepler would need to exist within that directory structure.

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