JS fetch
            Fetch results:
            
        
        Subresource loading
            Subresource results:
             
        
        
        Subframe loading
WebSocket connection
            WebSocket results:
            
        
        WebTransport connection
            WebTransport results:
            
        
        Permissions API
            Permissions API results:
            
        
        Navigation
Testing setup
- Download this image file, this html file, and this python script to a local directory
- 
                From the directory with those files, run python3 -m http.serverfor the HTTP server and runpython3 ws.pyfor the WebSocket server
- For testing WebTransport, download webtransport_server.py and follow the instructions in there to get it running. Self-signed certificate is the easiest thing to do for https (WebTransport does not work with http://localhost, it requires https://localhost).