Google does not support WebSocket connections in Googlebot. This was first known, I think, back in May 2019, when Martin Splitt and Zoe Clifford presented at Google I/O. Zoe Clifford said there ...

Firefox 71 will include a built-in WebSocket Inspector, a tool to inspect WebSocket connections. The tool is already available in Firefox Developer Edition 70, an experimental version of the browser.

Microsoft is previewing a new Azure Web PubSub service used to create real-time applications based on WebSockets communication tech. Because WebSockets allows for full-duplex communication channels ...