i am having an error with the example code provided and i have not found anything on google, here is the traceback
ERROR:websockets.server:Error in connection handler
Traceback (most recent call last):
File "C:\Users\felix\AppData\Local\Programs\Python\Python36\lib\site-packages\websockets\server.py", line 84, in handler
yield from self.ws_handler(self, path)
File "C:\Users\felix\Desktop\letistry\server.py", line 45, in counter
async for message in websocket:
TypeError: 'async for' requires an object with __aiter__ method, got WebSocketServerProtocol
all i have done is copy and paste code from https://websockets.readthedocs.io/en/stable/intro.html
im running the Synchronization example (code follows) on python 3.6 on windows 10.
#!/usr/bin/env python
# WS server example that synchronizes state across clients
import asyncio
import json
import logging
import websockets
logging.basicConfig()
STATE = {'value': 0}
USERS = set()
def state_event():
return json.dumps({'type': 'state', **STATE})
def users_event():
return json.dumps({'type': 'users', 'count': len(USERS)})
async def notify_state():
if USERS: # asyncio.wait doesn't accept an empty list
message = state_event()
await asyncio.wait([user.send(message) for user in USERS])
async def notify_users():
if USERS: # asyncio.wait doesn't accept an empty list
message = users_event()
await asyncio.wait([user.send(message) for user in USERS])
async def register(websocket):
USERS.add(websocket)
await notify_users()
async def unregister(websocket):
USERS.remove(websocket)
await notify_users()
async def counter(websocket, path):
# register(websocket) sends user_event() to websocket
await register(websocket)
try:
await websocket.send(state_event())
async for message in websocket:
data = json.loads(message)
if data['action'] == 'minus':
STATE['value'] -= 1
await notify_state()
elif data['action'] == 'plus':
STATE['value'] += 1
await notify_state()
else:
logging.error(
"unsupported event: {}", data)
finally:
await unregister(websocket)
asyncio.get_event_loop().run_until_complete(
websockets.serve(counter, 'localhost', 6789))
asyncio.get_event_loop().run_forever()
