package main

import (
	"bufio"
	"fmt"
	"log"
	"net"
	"os"
	"strings"
)

//TCP server端

func process(conn net.Conn) {
	defer conn.Close()
	var tmp = make([]byte, 1024)
	reader := bufio.NewReader(os.Stdin)
	for {
		n, err := conn.Read(tmp)
		if err != nil {
			log.Fatal("read failed on:", err)
			return
		}
		fmt.Println(string(tmp[:n]))
		fmt.Print("请回复:")
		msg, _ := reader.ReadString('\n')
		msg = strings.TrimSpace(msg)
		if msg == "exit" {
			break
		}
		conn.Write([]byte(msg))
		fmt.Println("等待回复中..")
	}
}

func main() {
	//1.本地端口启动服务
	listener, err := net.Listen("tcp", "127.0.0.1:20000")
	if err != nil {
		log.Fatal("start Tcp server failed on:", err)
		return
	}
	//2.等待别人来跟我建立链接
	for {
		conn, err := listener.Accept()
		if err != nil {
			log.Fatal("accept failed on:", err)
		}
		//3与客户端通信
		go process(conn)
	}

}