} var eventId = envelope.GetEventType().String() switch envelope.GetEventType() { case events.Envelope_HttpStart: eventId += envelope.GetHttpStart().GetPeerType().String() case events.Envelope_HttpStop: eventId += envelope.GetHttpStop().GetPeerType().String() case events.Envelope_Heartbeat: default: panic("Unexpected message type") } if envelope.GetOrigin() != origin { panic("origin not as expected") } func() { lock.Lock() defer lock.Unlock() receivedEvents[eventId] = true }() } }() httpListener, err := net.Listen("tcp", "localhost:0") Expect(err).ToNot(HaveOccurred()) defer httpListener.Close() httpHandler := autowire.InstrumentedHandler(FakeHandler{})