minor fix

MP1/client.py

@@ -27,7 +27,7 @@ def receive_exact(sock, num_bytes):
     while len(received_data) < num_bytes:
         chunk = sock.recv(num_bytes - len(received_data))
         if not chunk:
-            break
+            raise ConnectionError("connection closed before the full message arrived")
         received_data += chunk
     return received_data
 
@@ -62,6 +62,7 @@ def grep_all_ips(ips, cmd):
 
         except Exception as e:
             print(f"Failed to connect to {ip}:{PORT} - {e}")
+            match_count.append(0)
         finally:
             client_socket.close()