update removing pickle

.idea/misc.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (pythonProject)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file

.idea/opcua-cloning.iml

@@ -2,7 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-    <orderEntry type="jdk" jdkName="Python 3.9 (pythonProject)" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.9" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file

asyncua_server.py

@@ -4,6 +4,7 @@ from asyncua import ua, Server
 import socket
 import threading
 import json
+import struct
 
 server_up=False
 
@@ -188,8 +189,9 @@ def hash_receive(udp_receiver_ip,udp_receiver_port):
     while (True):
         bytesAddressPair = UDPServerSocket.recvfrom(bufferSize)
         message = bytesAddressPair[0]
-        hierarchy=pickle.loads(message)
-        hierarchy=json.loads(hierarchy)
+        string_length = struct.unpack("!I", message[:4])[0]
+        json_string = message[4:].decode('utf-8')
+        hierarchy=json.loads(json_string)
         if(prev_hash!=hierarchy["hash"] and asr.idx):
             analyse_hierarchy(hierarchy)
             prev_hash=hierarchy["hash"]

hash_sender.py

@@ -2,7 +2,7 @@ from asyncua import Client
 import asyncio
 import socket
 from time import sleep
-import pickle
+import struct
 import json
 
 nm_no = None
@@ -50,8 +50,12 @@ async def get_send_hash(ENDPOINT,NAMESPACE,server_hash_udp_ip,server_hash_udp_po
             node_hierarchy["hash"] = hash(str(node_hierarchy))
             node_hierarchy["namespace_idx"]=nm_no
             json_hierarchy = json.dumps(node_hierarchy)
-            hierarchy=pickle.dumps(json_hierarchy)
-            UDPClientSocket.sendto(hierarchy, serverAddressPort)
+            hierarchy=json.dumps(json_hierarchy)
+            utf8_encoded_string = hierarchy.encode('utf-8')
+            string_length = len(utf8_encoded_string)
+            length_bytes = struct.pack("!I", string_length)
+            binary_data = length_bytes + utf8_encoded_string
+            UDPClientSocket.sendto(binary_data, serverAddressPort)
 
 def send_hash(Endpoint,Namespace,server_hash_udp_ip,server_hash_udp_port):
     asyncio.run(get_send_hash(Endpoint,Namespace,server_hash_udp_ip,server_hash_udp_port))
\ No newline at end of file