We are using the Undertow SSE support.
In the SSE spec, it is possible to send a "retry: <time in milliseconds>"
that tells the client to try a reconnection after a certain amount of time (
Right now, we haven't found the ability to send the "retry" via the
If we look at the ServerSentEventConnection class, you can only send an
event, an id and a data.
So, is it a missing feature or is there a way, we may have missed, to send
Thanks in advance for the answer!