diff --git a/backend/stream.py b/backend/stream.py
index b49ac7d..a3ed8ca 100755
--- a/backend/stream.py
+++ b/backend/stream.py
@@ -101,10 +101,10 @@ class UpstreamHandler():
         self.proxy = ProxyElem(None)
         self.upstream = None
     async def test_socks(self, proxy):
-        if not isinstance(proxy, str):
+        if not hasattr(proxy, "proxy") or not isinstance(proxy.proxy, str):
             return (True, ProxyElem(None))
         try:
-            splitted = proxy.rsplit(":", 1)
+            splitted = proxy.proxy.rsplit(":", 1)
             host = proxy
             port = 1080
             if len(splitted) == 2:
@@ -130,7 +130,7 @@ class UpstreamHandler():
             if isinstance(proxy_list, list):
                 futures = []
                 for current in proxy_list:
-                    future = asyncio.create_task(self.test_socks(current.proxy))
+                    future = asyncio.create_task(self.test_socks(current))
                     futures.append(future)
                 for future in asyncio.as_completed(futures):
                     success, current = await future