diff --git a/local.py b/local.py
index 6484874..899b8f8 100755
--- a/local.py
+++ b/local.py
@@ -103,7 +103,7 @@ class Socks5Server(SocketServer.StreamRequestHandler):
             sock = self.connection
             sock.recv(262)
             sock.send("\x05\x00")
-            data = self.rfile.read(4)
+            data = self.rfile.read(4) or '\x00' * 4
             mode = ord(data[1])
             if mode != 1:
                 logging.warn('mode != 1')