How to debug websockets with wireshark

Question

I have hosted my websocket server using python tornado server on localhost ws://localhost:8001 and client is on another system on 192.168.0

Answer 1

Finally i found it.

When i put

tcp.dstport == 8001 || tcp.srcport == 8001

At that time i can capture it.

Answer 2

Check the syntax for filters, in your case, it should be tcp port 8001.

Step by step:

1. Capture options
2. Select the network interface
3. Fill the filed next to the button "Capture Filter:" with tcp port 8001
4. Start

Answer 3

You can also filter to show only WebSocket packets by using a display filter:

(websocket)