Hey,

I have a webapp that needs some kind of connection-tracking (online-offline). I use the SSE ext. for triggering updates in my frontend.

On connection loss, I open a modal like this:

  htmx.on("htmx:sseError", function(evt){
                        console.log("SSE disconnect");
                        htmx.addClass(htmx.find("#disconnect-modal"), "is-active");

It would be great to also have a lifecycle event for reconnection or connection at all. I tried to access the eventSource object from the internal data to add a callback to onopen but it does not work.

How about adding an event htmx:sseOpen to the sse extension?