kubernetes/staging/src/k8s.io/apimachinery/third_party/forked/golang/netutil/addr.go

// FROM: http://golang.org/src/net/http/client.go
// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
// return true if the string includes a port.
func hasPort(s string) bool { … }

var portMap …

// FROM: http://golang.org/src/net/http/transport.go
// canonicalAddr returns url.Host but always with a ":port" suffix
func CanonicalAddr(url *url.URL) string { … }