Server-side events with EventSource.
var http =eventSource =http
$ curl -v 127.0.0.1:8765
To connect to the EventSource server, use the browser's EventSource interface.
keepAlive- Boolean, default:
true, send a comment every 15 seconds to guard against timeouts.
onClose- Function, called when the connection is terminated.
Send an event down the event stream.
Close the connection.
Send a message down the event stream. It will be ignored by the receiver.