Fix HyBi support on 64-bit systems.

https://github.com/kanaka/noVNC/issues/76

- cleanup/update TODO.
- remove explicit check for ctypes module for HyBi.

docs/TODO

@@ -1,17 +1,9 @@
-- Support protocol version 07:
-    http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-07
+- Go implementation
 
 - Support multiple targets that are selected by the path line. Some
   sort of wildcarding of ports too.
 
+- Support SSL targets too.
+
 - wstelnet: support CSI L and CSI M
 
-- create gevent version:
-    http://nichol.as/benchmark-of-python-web-servers
-    http://n01se.net/paste/QXO
-
-    - Need at least libevent-1.4 (i.e. not 9.04 Jaunty)
-
-    sudo aptitude install python-dev libevent-dev python-setuptools
-
-    sudo easy_install gevent

websocket.py

@@ -49,8 +49,7 @@ else:
 
 # Degraded functionality if these imports are missing
 for mod, sup in [('numpy', 'HyBi protocol'),
-        ('ctypes', 'HyBi protocol'), ('ssl', 'TLS/SSL/wss'),
-        ('resource', 'daemonizing')]:
+        ('ssl', 'TLS/SSL/wss'), ('resource', 'daemonizing')]:
     try:
         globals()[mod] = __import__(mod)
     except ImportError:
@@ -298,9 +297,9 @@ Sec-WebSocket-Accept: %s\r
             f['mask'] = buf[f['hlen']:f['hlen']+4]
             b = c = ''
             if f['length'] >= 4:
-                mask = numpy.frombuffer(buf, dtype=numpy.dtype('<L4'),
+                mask = numpy.frombuffer(buf, dtype=numpy.dtype('<u4'),
                         offset=f['hlen'], count=1)
-                data = numpy.frombuffer(buf, dtype=numpy.dtype('<L4'),
+                data = numpy.frombuffer(buf, dtype=numpy.dtype('<u4'),
                         offset=f['hlen'] + 4, count=int(f['length'] / 4))
                 #b = numpy.bitwise_xor(data, mask).data
                 b = numpy.bitwise_xor(data, mask).tostring()