Documentation improvement

[warvariuc]

http://aiohttp.readthedocs.org/en/stable/web.html#websockets

@asyncio.coroutine
def websocket_handler(request):

    ws = web.WebSocketResponse()
    ws.start(request)

    while True:
        msg = yield from ws.receive()

        if msg.tp == aiohttp.MsgType.text:
            if msg.data == 'close':
                yield from ws.close()
            else:
                ws.send_str(msg.data + '/answer')
        elif msg.tp == aiohttp.MsgType.close:
            print('websocket connection closed')
        elif msg.tp == aiohttp.MsgType.error:
            print('ws connection closed with exception %s',
                  ws.exception())

    return ws

print('ws connection closed with exception %s', ws.exception()) -> print('ws connection closed with exception %s' % ws.exception())

Also when print('websocket connection closed') happens after that there is no break -- the loop will still run forever. I am suggesting to replace while True: -> while not ws.closed:

[asvetlov]

Fixed by 50fa781
Thanks

[lock]

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