fix UDP source port issue

clowwindy · clowwindy · commit c34c99450f7d · 2015-07-10T16:58:04.000+08:00
diff --git a/shadowsocks/udprelay.py b/shadowsocks/udprelay.py
@@ -76,8 +76,8 @@
 BUF_SIZE = 65536
 
 
-def client_key(a, b, c, d):
-    return '%s:%s:%s:%s' % (a, b, c, d)
+def client_key(source_addr, dest_addr):
+    return '%s:%s' % (source_addr[0], source_addr[1])
 
 
 class UDPRelay(object):
@@ -169,7 +169,7 @@ def _handle_server(self):
         else:
             server_addr, server_port = dest_addr, dest_port
 
-        key = client_key(r_addr[0], r_addr[1], dest_addr, dest_port)
+        key = client_key(r_addr, (dest_addr, dest_port))
         client = self._cache.get(key, None)
         if not client:
             # TODO async getaddrinfo
