netaddress.go
func (na *NetAddress) Dial() (net.Conn, error) {
	conn, err := net.Dial("tcp", na.String())
	if err != nil {
		return nil, err
	}
	return conn, nil
}
func (na *NetAddress) Dial() (net.Conn, error) {
	conn, err := net.Dial("tcp", na.String())
	if err != nil {
		return nil, err
	}
	return conn, nil
}
// Dial calls net.Dial on the address.