Example of how to use msgpack-rpc functionality in github.com/ugorji/go/codec

msgpack-rpc-client.go

package client

import (
	"fmt"
	"net"
	"net/rpc"
	"github.com/ugorji/go/codec"
)

func main() {
	var mh MsgpackHandle

	conn, err := net.Dial("tcp", "localhost:5555")
	if err != nil {
		panic(err)
	}

	rpcCodec := MsgpackSpecRpc.ClientCodec(conn, &mh)
	client := rpc.NewClientWithCodec(rpcCodec)

	var reply string
	err = client.Call("TestServer.Test", "", &reply)
	if err != nil {
		panic(err)
	}

	fmt.Println(reply)
	// Output: reply
}

msgpack-rpc-server.go

package server

import (
	"fmt"
	"net"
	"net/rpc"
	"github.com/ugorji/go/codec"
)

type TestServer struct{}

func (t *TestServer) Test(args *string, reply *string) error {
	*reply = "reply"
	return nil
}

func main() {
	var mh codec.MsgpackHandle

	testServer := new(TestServer)
	rpc.Register(testServer)

	listener, err := net.Listen("tcp", ":5555")
	if err != nil {
		panic(err)
	}
	defer listener.Close()

	for {
		conn, err := listener.Accept()
		if err != nil {
			panic(err)
		}
		rpcCodec := codec.MsgpackSpecRpc.ServerCodec(conn, &mh)
		go rpc.ServeCodec(rpcCodec)
	}
}