Request property returns reference to WebRequest object.
It holds all information known about user's request -
one you should evaluate and return proper response back to
the client.
There can be only one request at a time per user's
connection. It is possible, however, that client sends
pipelined requests. If so, wodWebServer will wait for you
to evaluate previous request before passing new one to you
- and creating new Request/Response objects.
When new request arrives for you to evaluate it (and
send response back), RequestDone
event will fire.