添加DEBUG功能

lib/tcp/tcp_server.py

@@ -1,3 +1,5 @@
+from _typeshed import Self
+from ctypes import set_errno
 import socket
 
 
@@ -25,6 +27,8 @@ class TcpServer:
     def send_data(self, data: bytes):
         self.conn.sendall(data)
 
-    def close(self):
+    def conn_close(self):
         self.conn.close()
+
+    def close(self):
         self.sock.close()