Detected Browser:
...
Click Here to have the test server send a big picture by http.
Not initialized
The incrementing number is coming from the server at 20Hz and is individual for each connection to the server... try opening a second browser window.

The button sends a message over the websocket link to ask the server to zero just this connection's number.
libwebsockets "lws-mirror-protocol"
Use the mouse to draw on the canvas below -- all other browser windows open on this page see your drawing in realtime and you can see any of theirs as well.

The lws-mirror protocol doesn't interpret what is being sent to it, it just re-sends it to every other websocket it has a connection with using that protocol, including the guy who sent the packet.

libwebsockets-test-client joins in by spamming circles on to this shared canvas when run.
Drawing color:
Not initialized
libwebsockets "open and close testing"
Not initialized
 To help with open and close testing, you can open and close a connection by hand using the buttons.
"Close" closes the connection from the browser with code 3000 and reason 'Bye!".
"Request Server Close" sends a message asking the server to initiate the close, which it does with code 1001 and reason "Seeya".
Looking for support? https://libwebsockets.org, https://github.com/warmcat/libwebsockets
Join the mailing list: https://libwebsockets.org/mailman/listinfo/libwebsockets