remove caching for domains check

proxy/config.py

@@ -1,5 +1,6 @@
 import logging
 import os
+import string
 import random
 import socket as _socket
 import threading
@@ -53,7 +54,8 @@ proxy_config = ProxyConfig()
 
 def _fetch_cfproxy_domain_list() -> List[str]:
     try:
-        req = Request(CFPROXY_DOMAINS_URL, headers={'User-Agent': 'tg-ws-proxy'})
+        req = Request(CFPROXY_DOMAINS_URL + "?" + "".join(random.choices(string.ascii_letters, k=7)),
+                       headers={'User-Agent': 'tg-ws-proxy'})
         with urlopen(req, timeout=10) as resp:
             text = resp.read().decode('utf-8', errors='replace')
         encoded = [