code: func main() {
      // Get Udp data, you can use GOnetstat.Tcp() to get TCP data
       d := GOnetstat.Udp()
  
       // format header
       fmt.Printf("Proto %16s %20s %14s %24s\n", "Local Adress", "Foregin Adress",
                  "State", "Pid/Program")
  
       for _, p := range(d) {
          // format data like netstat output
          ip_port := fmt.Sprintf("%v:%v", p.Ip, p.Port)
          fip_port := fmt.Sprintf("%v:%v", p.ForeignIp, p.ForeignPort)
          pid_program := fmt.Sprintf("%v/%v", p.Pid, p.Name)
  
          fmt.Printf("udp %16v %20v %16v %20v\n", ip_port, fip_port,
                              p.State, pid_program)
       }
  }
docs: /* Get Udp information and show like netstat.
     Information like 'user' and 'name' of some processes will not show if you
     don't have root permissions */