From 3fab3d818ccc08b52c4479b09fa247c083b05c79 Mon Sep 17 00:00:00 2001
From: ASHISH JULEY <Ashish2.Juley@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 09:08:42 +0100
Subject: [PATCH] Add task3.py
---
task3.py | 28 ++++++++++++++++++++++++++++
worksheet3 | 1 +
2 files changed, 29 insertions(+)
create mode 100644 task3.py
create mode 160000 worksheet3
diff --git a/task3.py b/task3.py
new file mode 100644
index 0000000..920839b
--- /dev/null
+++ b/task3.py
@@ -0,0 +1,28 @@
+import asyncio
+import websockets
+import time
+import struct
+
+async def main_loop(uri):
+ async with websockets.connect(uri) as websocket:
+ await recv_and_decode_packet(websocket)
+ while True:
+ packet = struct.pack('<HHHH4s', 0, 542, len(b'1111'), checksum, b'1111')
+ await websocket.send(packet)
+ await recv_and_decode_packet(websocket)
+ time.sleep(1)
+
+def recv_and_decode_packet(websocket):
+ response = await websocket.recv()
+ print(f"Base64: {response}")
+
+ decoded = struct.unpack('<HHHH4s', response)
+ print(f"Decoded Packet:\nSource Port: {decoded[0]}\nDest Port: {decoded[1]}\nData Length: {decoded[2]}\nChecksum: {decoded[3]}\nPayload: {decoded[4]}")
+
+def calculate_checksum(data):
+ # Implement your checksum calculation here
+ return checksum
+
+# Run the main loop
+asyncio.run(main_loop('ws://localhost:5612'))
+
diff --git a/worksheet3 b/worksheet3
new file mode 160000
index 0000000..513c13c
--- /dev/null
+++ b/worksheet3
@@ -0,0 +1 @@
+Subproject commit 513c13c4573e1da6aa19acfaec07dcdf66b105f4
--
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