Imports k8s.io/client-go/1.5/pkg/api k8s.io/client-go/1.5/pkg/kubelet/server/portforward k8s.io/client-go/1.5/pkg/util/httpstream k8s.io/client-go/1.5/pkg/util/runtime Standard library imports errors fmt io io/ioutil net net/http strconv strings sync