update contrib

contrib/data_safety_training/image_classification/server/receiver.py

+import zmq
+import socket
+import msgpack
+import os
+random_port = 60001
+current_ip = socket.gethostbyname(socket.gethostname())
+print(current_ip)
+os.system("python -m SimpleHTTPServer 8080 &")
+
+#listening for client
+context = zmq.Context()
+zmq_socket = context.socket(zmq.REP)
+zmq_socket.bind("tcp://{}:{}".format(current_ip, random_port))
+print("binding tcp://{}:{}".format(current_ip, random_port))
+
+#get mission and return the path of encoder
+message = msgpack.loads(zmq_socket.recv())
+print(message["mission"])
+zmq_socket.send("user.py")
+
+#wait client finish encoding
+while True:
+    message = zmq_socket.recv()
+    if message == 'complete':
+        break
+
+#start training
+os.system("python -u server.py > server.log &")