echo_cherrypy_server with Python 3.2 fails on client connection

[v-legoff]

When launching the 'echo_cherrypy_server.py' example, the CherryPy server starts, but the client connection fails with a TypeError.

To reproduce:

1. Launch the 'echo_cherrypy_server.py' example with Python 3.2 [1]
2. Open a compatible browser (Mozilla Firefox 16 in my case) and go to the URL: http://localhost:9000
3. On the server-side (Python console), the following error occurs:

[31/Oct/2012:10:40:14] HTTP
Request Headers:
PRAGMA: no-cache
UPGRADE: websocket
HOST: 127.0.0.1:9000
ORIGIN: http://localhost:9000
CONNECTION: keep-alive, Upgrade
CACHE-CONTROL: no-cache
SEC-WEBSOCKET-VERSION: 13
ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8
USER-AGENT: Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20100101 Firefox/16.0
ACCEPT-LANGUAGE: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3
SEC-WEBSOCKET-KEY: 6mxn50NE+8xKZ15w2/NQRw==
Remote-Addr: 127.0.0.1
ACCEPT-ENCODING: gzip, deflate
[31/Oct/2012:10:40:14] HTTP Traceback (most recent call last):
File "C:\python32\lib\site-packages\cherrypy-3.2.2-py3.2.egg\cherrypy_cprequest.py", line 647, in respond
self.hooks.run('before_request_body')
File "C:\python32\lib\site-packages\cherrypy-3.2.2-py3.2.egg\cherrypy_cprequest.py", line 112, in run
raise exc
File "C:\python32\lib\site-packages\cherrypy-3.2.2-py3.2.egg\cherrypy_cprequest.py", line 102, in run
hook()
File "C:\python32\lib\site-packages\cherrypy-3.2.2-py3.2.egg\cherrypy_cprequest.py", line 62, in call
return self.callback(**self.kwargs)
File "C:\python32\lib\site-packages\ws4py-0.2.3-py3.2.egg\ws4py\server\cherrypyserver.py", line 149, in upgrade
ws_key = base64.b64decode(key)
File "C:\python32\lib\base64.py", line 83, in b64decode
raise TypeError("expected bytes, not %s" % s.class.name)
TypeError: expected bytes, not str

127.0.0.1 - - [31/Oct/2012:10:40:14] "GET /ws HTTP/1.1" 500 1686 "" "Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20100101 Firefox/16.0"

[1] Windows 7, Python 3.2.3, CherryPy 3.2.2.