Class HTTPServerWrapper

This is a dummy wrapper around HTTPServer.
It is intended to be used only through process_request() method
It also has chainedHandler attribute, which refers to a handler instance 
that was created to handle CONNECT method.

Client                              Proxy                               Server                  
   |                                  |                                   |
   | -- CONNECT http://host:port ---> |                                   |
   | <---------- 200 OK ------------  |                                   |
   | -------- Handshake ------------- |                                   |
   |                                  | -- create --> Wrapped Proxy       |
   |                                  |                     |             |
   | --------- (Over SSL) GET /path?params ---------------> |             |
   |                                  | <--- Get info ----  |             |  
   |                                  |                     | --- GET --> | 

Due to the wrapper object, the second (wrapped) proxy know almost nothing about
SSL and works just as with plain sockets.
Examples of what a second proxy handler would want to know from the original
one is the CONNECT method path or urlOpener (see spiderMan).