added some client wrappers... async is not async yet

package rpcexamplelib

import (

	"net/rpc"

)

// MultiplySync is a rpc wrapper for the synchronos call to Multiply.

func MultiplySync(client *rpc.Client, a int, b int) (int, error) {

	args := &Args{A: a, B: b}

	var reply int

	err := client.Call("Arith.Multiply", args, &reply)

	return reply, err

}

// DivideSync is a rpc wrapper for the synchronos call to Divide.

func DivideSync(client *rpc.Client, a int, b int) (int, int, error) {

	args := &Args{A: a, B: b}

	var quotient Quotient

	err := client.Call("Arith.Divide", args, &quotient)

	return quotient.Quo, quotient.Rem, err

}

// DivideAsync is a apc wrapper for the asynchronos call to Divide.

// TBD: this is not async, yet

func DivideAsync(client *rpc.Client, a int, b int) (int, int, error) {

	args := &Args{A: a, B: b}

	quotient := new(Quotient)

	divCall := client.Go("Arith.Divide", args, quotient, nil)

	replyCall := <-divCall.Done

	return quotient.Quo, quotient.Rem, replyCall.Error

}