Python websockets连接被拒绝

我试图执行这段使用python库websockets的代码，但我无法连接，因为服务器拒绝连接并终止连接 突然好像有什么东西挡住了我的请求，我不知道是什么。以下是我的websockets库代码：

import requests
import asyncio
import json
import traceback
import websockets


async def async_processing():
   
 async def on_message(message):
   print(message)
   # here the code to process message


 async def get_url():
    url = 'https://rtds.retabet.es/realTimeDataHub/negotiate?negotiateVersion=1'
    headers = {
             "Host": "rtds.retabet.es",
             "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0",
             "Accept": "*/*",
             "Accept-Language": "es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3",
             "Accept-Encoding": "gzip, deflate, br",
             "Referer": "https://apuestas.retabet.es/",
             "X-Requested-With": "XMLHttpRequest",
             "Content-Type": "text/plain;charset=UTF-8",
             "Origin": "https://apuestas.retabet.es",
             "Connection": "keep-alive",
             "Content-Length": "0",
           }

    resp = requests.post(url, headers=headers,timeout=5)
    resp = json.loads(resp.text)
    connection_id = resp["connectionToken"].strip()
    url = 'wss://rtds.retabet.es/realTimeDataHub?id={}'.format(connection_id)
    return url

    
 url = await get_url()
 async with websockets.connect(url) as websocket:
  print("opened")
  await websocket.send('{"protocol":"json","version":1}\x1e')
  while True:
      try:
          message = await websocket.recv()
          await on_message(message)
 
      except Exception as e:
          print('ConnectionClosed')
          print(traceback.format_exc())
          raise

    
async def other_tasks():
   while True:
      print("Here I will do the task")
      await asyncio.sleep(1)
      
      
     
    
asyncio.get_event_loop().run_until_complete(asyncio.wait([   
   other_tasks(),
   async_processing()
   ], return_when=asyncio.FIRST_EXCEPTION))

或者，我也尝试使用websocket库。在这种情况下，我可以连接websocket，但我的循环中的并行任务在websocket连接后不会执行 打开了。下面是我的websocket库代码：

import requests
import websocket
import asyncio
import json


async def async_processing():

  async def on_message(message):
    print(message)
    # here the code to process message
  
  async def get_url():
     url = 'https://rtds.retabet.es/realTimeDataHub/negotiate?negotiateVersion=1'
     headers = {
              "Host": "rtds.retabet.es",
              "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0",
              "Accept": "*/*",
              "Accept-Language": "es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3",
              "Accept-Encoding": "gzip, deflate, br",
              "Referer": "https://apuestas.retabet.es/",
              "X-Requested-With": "XMLHttpRequest",
              "Content-Type": "text/plain;charset=UTF-8",
              "Origin": "https://apuestas.retabet.es",
              "Connection": "keep-alive",
              "Content-Length": "0",
            }

     resp = requests.post(url, headers=headers,timeout=5)
     resp = json.loads(resp.text)
     connection_id = resp["connectionToken"].strip()
     url = 'wss://rtds.retabet.es/realTimeDataHub?id={}'.format(connection_id)
     return url


      
  url = await get_url()
  websocket.enableTrace(True)
  ws = websocket.create_connection(url)
  print("opened")
  ws.send('{"protocol":"json","version":1}\x1e')
  while True:
    try:
        message = ws.recv()
        await on_message(message)
  
    except Exception as e:
        print(e)
        print('ConnectionClosed')
        ws.close()
        break
  
async def other_tasks():
  while True:   
    print("Here I will do the task")
    await asyncio.sleep(1)

asyncio.get_event_loop().run_until_complete(asyncio.wait([   
   other_tasks(),
   async_processing()
   ], return_when=asyncio.FIRST_EXCEPTION))

我的目标是连接websocket并并行运行一些东西。我以前使用WebSocket连接过一些WebSocket，但我遇到了任何问题，所以我需要知道为什么现在不可能。如果有人能让我了解一下这个话题，我将不胜感激。 另外，知道第二段中的错误也很好，因为我有点困惑

谢谢