added python test client

vs.pu01/src/main/java/vs/testClient.py

@@ -0,0 +1,20 @@
+import socket
+
+# Simple one-shot version
+sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+sock.settimeout(10)
+
+try:
+    sock.sendto(b"DISCOVER", ('255.255.255.255', 8888))
+    print("Broadcast sent, waiting for response...")
+    
+    data, addr = sock.recvfrom(1024)
+    print(f"Response from {addr}: {data.decode()}")
+    
+except socket.timeout:
+    print("No response received")
+except Exception as e:
+    print(f"Error: {e}")
+finally:
+    sock.close()