Add default ticker

cmd/eksterd/events.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"net"
+	"time"
 
 	"p83.nl/go/ekster/pkg/microsub"
 )
@@ -22,14 +23,22 @@ func newConsumer(conn net.Conn) *Consumer {
 	fmt.Fprint(conn, "\r\n")
 
 	go func() {
-		for msg := range cons.output {
+		for {
+			select {
+			case <-time.Tick(10 * time.Second):
 				fmt.Fprint(conn, `event: ping`)
 				fmt.Fprint(conn, "\r\n")
+				fmt.Fprint(conn, "\r\n")
+
+			case msg := <-cons.output:
+				fmt.Fprint(conn, `event: message`)
+				fmt.Fprint(conn, "\r\n")
 				fmt.Fprint(conn, `data:`)
 				json.NewEncoder(conn).Encode(msg)
 				fmt.Fprint(conn, "\r\n")
 				fmt.Fprint(conn, "\r\n")
 			}
+		}
 		conn.Close()
 	}()