This is a very basic HTTP server, designed for real-time server sent
event streams. BEWARE: the server offers little to no security
features.

The server supports:
- the standard HTTP "GET" method for retrieval of events.
- a custom "UPDATE" method to send events.
- HTTP 1.0 and 1.1 connections. HTTP 1.1 uses chunked mode.

The server is hard-coded to listen on TCP *:1180.

Design
------
The design concept is:

public ------ apache reverse ----- event ------ data gathering
internet          proxy         httpd server      application

The reverse proxy is responsible for controlling public access to the
event streams served by the mini-httpd event server; the event server
itself should not be publically accessible.

Security
--------
Virtually none inherent to the server; if you can connect to the server
you can read and write the vent stream. However, the server does detect
a connection forwarded through Apache (via the X-Forwarded* headers)
and denies the UPDATE command.

Bugs
----
Does not treat request header fields case-insensitively
Does not honour the Expect: 100-continue header
Probably many more.