discovery.go
func HostPort(service, name string) (string, error) {
	host, err := Host(service, name)
	if err != nil {
		return "", err
	}
	port, err := Port(service, name)
	if err != nil {
		return "", err
	}

	return net.JoinHostPort(host, port), nil
}
func HostPort(service, name string) (string, error) {
	host, err := Host(service, name)
	if err != nil {
		return "", err
	}
	port, err := Port(service, name)
	if err != nil {
		return "", err
	}

	return net.JoinHostPort(host, port), nil
}
func HostPort ( service , name string ) ( string , error ) { host , err := Host ( service , name ) if err != nil { return " " , err } port , err := Port ( service , name ) if err != nil { return " " , err } return net . JoinHostPort ( host , port ) , nil }
// HostPort finds the specified host:port combo for a service based off of the service's name and
// which interface you are accessing. Values are found in environment variables fitting the scheme:
// SERVICE_{SERVICE NAME}_{INTERFACE NAME}_{PROTO,HOST,PORT}.
HostPort finds the specified host : port combo for a service based off of the service s name and which interface you are accessing . Values are found in environment variables fitting the scheme : SERVICE_ { SERVICE NAME } _ { INTERFACE NAME } _ { PROTO HOST PORT } .