python 处理websocket
http://pypi.python.org/pypi/websocket-client/0.4
http://eventlet.net/doc/examples.html#websocket-server-example
https://github.com/mtah/python-websocket
http://pypi.python.org/pypi/gevent-websocket/0.2.2
http://www.nublue.co.uk/blog/threaded-python-websocket-server-and-javascript-client/
