the ETCD service discovery could not be run as readme described

[SmartsYoung]

In function (s *ServiceDiscovery) WatchService(prefix string) error , the sentence resp, err := s.cli.Get(context.Background(), prefix, clientv3.WithPrefix()) there is no any result return. And run the discovery.go and the register.go there is nothing to show in the terminal. Could you please test it, thanks!

[Bingjian-Zhu]

@SmartsYoung Please make sure the ETCD is running.

[SmartsYoung]

Thanks, It's ok! But in the discovery.go, the function (s *ServiceDiscovery) GetServices() []string define the addrs := make([]string, 0, len(serverList)) may lead to fix as the serverList not a global var.

[Bingjian-Zhu]

@SmartsYoung Yes, Thanks!