fix

e2e/e2e_test.go

@@ -14,12 +14,19 @@ import (
 // startClient builds and starts an in-process client against the hub, with the
 // given mappings, returning the running client.
 func startClient(t *testing.T, hubAddr, psk string, maxConn int, mappings []client.Mapping) *client.Client {
+	t.Helper()
+	return startClientWithPing(t, hubAddr, psk, maxConn, 20000, mappings)
+}
+
+// startClientWithPing is startClient with an explicit heartbeat interval, for
+// tests that need liveness detection to trigger quickly.
+func startClientWithPing(t *testing.T, hubAddr, psk string, maxConn, pingMs int, mappings []client.Mapping) *client.Client {
 	t.Helper()
 	cfg := &client.Config{
 		Server:         hubAddr,
 		PSK:            psk,
 		MaxConn:        maxConn,
-		PingIntervalMs: 20000,
+		PingIntervalMs: pingMs,
 		Mappings:       mappings,
 	}
 	c := client.New(cfg)