Chrome developer tools now have the ability to list WebSocket frames and also inspect the data if the frames are not binary. Process: Launch Chrome Developer tools. Load your page and initiate the WebSocket connections.
Read moreHow do I enable throttling on Google Chrome?
To use the network throttler in Chrome:
Read moreHow do I disable WebSockets in Google Chrome?
When you want to turn off WebSockets, click on the TamperMonkey icon and the toggle switch to enable blocking . Refresh the page. Disable the script when you no longer want to block WebSockets.
Read more