Netfilter Regex tests complete

tests/utils/udpserver.py

@@ -0,0 +1,34 @@
+from multiprocessing import Process
+import socket
+
+class UdpServer:
+    def __init__(self,port,ipv6):
+        def _startServer(port):
+            sock = socket.socket(socket.AF_INET6 if ipv6 else socket.AF_INET, socket.SOCK_DGRAM)
+            sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            sock.bind(('::1' if ipv6 else '127.0.0.1', port))
+            while True:
+                bytesAddressPair = sock.recvfrom(432)
+                message = bytesAddressPair[0]
+                address = bytesAddressPair[1]
+                sock.sendto(message, address)
+                
+        self.ipv6 = ipv6
+        self.port = port
+        self.server = Process(target=_startServer,args=[port])
+
+    def start(self):
+        self.server.start()
+    
+    def stop(self):
+        self.server.terminate()
+
+    def sendCheckData(self,data):
+        s = socket.socket(socket.AF_INET6 if self.ipv6 else socket.AF_INET, socket.SOCK_DGRAM)
+        s.settimeout(2)
+        s.sendto(data, ('::1' if self.ipv6 else '127.0.0.1', self.port))
+        try:
+            received_data = s.recvfrom(432)
+        except Exception:
+            return False
+        return received_data[0] == data