import asyncio
import logging
from datetime import datetime
from aiowebsocket.converses import AioWebSocket
import json


async def startup(uri):
    data = ["message", {
        "_url": "/chain/get_token_holder_ranks",
        "_method": "POST",
        "_headers": {"content-type": "application/json"},
        "contract": "bgbgbgbgbgbg",
        "symbol": "BG",
        "page": 0,
        "limit": 50,
        "sortBy": "balance",
        "ascending": False,
        "lang": "zh-CN"
    }]
    message = json.dumps(data, ensure_ascii=False)
    async with AioWebSocket(uri) as aws:
        converse = aws.manipulator
        message = '42' + message  # 要发送的数据
        while True:
            await converse.send(message)
            print('{time}-Client send: {message}'
                  .format(time=datetime.now().strftime('%Y-%m-%d %H:%M:%S'), message=message))
            mes = await converse.receive()
            print('{time}-Client receive: {rec}'
                  .format(time=datetime.now().strftime('%Y-%m-%d %H:%M:%S'), rec=mes))


if __name__ == '__main__':
    remote = 'wss://api-v1.eosflare.io/socket.io/?EIO=3&transport=websocket'
    # remote = 'ws://echo.websocket.org'
    try:
        asyncio.get_event_loop().run_until_complete(startup(remote))
    except KeyboardInterrupt as exc:
        logging.info('Quit.')

参考连接：

https://github.com/asyncins/aiowebsocket