go语言简单模拟RPC，详见个人新博客：

代码如下：

package mainimport (	"errors"	"fmt"	"time")func RPCClient(ch chan string, req string) (string, error) {	ch <- req	select {	case ack := <-ch:		return ack, nil	case <-time.After(time.Second):		return "", errors.New("Time out")	}}func RPCServer(ch chan string) {	for {		data := <-ch		fmt.Println("server received:", data)		//time.Sleep(time.Second * 2)		ch <- "roger"	}}func main() {	ch := make(chan string)	go RPCServer(ch)	recv, err := RPCClient(ch, "hi")	if err != nil {		fmt.Println(err)	} else {		fmt.Println("client received", recv)	}}