diff --git a/demo.py b/demo.py
index b7f2ff1..601b22c 100644
--- a/demo.py
+++ b/demo.py
@@ -1,8 +1,33 @@
 import apns
 from base64 import b64decode, b64encode
+from hashlib import sha1
 
 conn1 = apns.APNSConnection()
 print(f"Push Token 1: {b64encode(conn1.token).decode()}")
 
-conn2 = apns.APNSConnection(cert=conn1.cert, private_key=conn1.private_key, token=conn1.token)
-print(f"Push Token 2: {b64encode(conn2.token).decode()}")
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+conn2 = apns.APNSConnection()
+print(f"Push Token 2: {b64encode(conn2.token).decode()}")
+
+# Create a topic filter payload with SHA1 hash of the topic
+payload = apns.Payload(9, apns.Fields({1: conn2.token, 2: sha1(b"com.apple.madrid").digest()}))
+# Send the payload
+#conn1.sock.write(payload.to_bytes())
+conn2.sock.write(payload.to_bytes())
+
+#print(sha1(b"com.apple.madrid").digest())
+# Send a notification
+# expiry timestamp in UNIX epoch
+expiry = 1680761868
+expiry = expiry.to_bytes(4, "big")
+
+# Current time in UNIX nano epoch
+import time
+now = int(time.time() * 1000).to_bytes(8, "big")
+payload = apns.Payload(0x0a, apns.Fields({1: sha1(b"com.apple.madrid").digest(), 2: conn2.token, 3: b"Hello World!", 5: expiry, 6: now, 7: 0x00.to_bytes()}))
+conn1.sock.write(payload.to_bytes())
+
+print("Waiting for response...")
+
+# Check if the notification was sent
+resp = apns.Payload.from_stream(conn2.sock)
+print(resp)
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