Go rpc server over tcp

server.go

package main

import (
	"log"
	"net"
	"net/rpc"
)

type System int

func (System) Ping(message, reply *string) error {

	if *message == "ping" {
		*reply = "pong"
	} else {
		*reply = "wut?"
	}

	return nil
}

func main() {

	sys := new(System)
	server := rpc.NewServer()
	server.Register(sys)

	l, err := net.Listen("tcp", ":8080")
	if err != nil {
		log.Fatal("listen error:", err)
	}

	server.Accept(l)

}