请用golang写一个简单的聊天室，包含服务端客户端

package main
import (
"fmt"
"net"
)
type client chan<- string // 只能发送 string 类型的消息的通道类型别名
var (
entering = make(chan client)
leaving  = make(chan client)
messages = make(chan string) // 所有客户端共享的消息通道
)
func broadcaster() {
clients := make(map[client]bool) // 客户端集合
for {
select {
case msg := <-messages:
// 把收到的消息发送给所有客户端
for cli := range clients {
cli <- msg
}
case cli := <-entering:
// 新客户端连接
clients[cli] = true
cli <- "Welcome to the chat room!"
case cli := <-leaving:
// 客户端离开
delete(clients, cli)
close(cli)
}
}
}
func handleConn(conn net.Conn) {
ch := make(chan string) // 发送给客户端的消息通道
go clientWriter(conn, ch)
who := conn.RemoteAddr().String()
ch &lt;- &quot;You are &quot; + who
messages &lt;- who + &quot; has arrived&quot;
entering &lt;- ch

input := make(chan string) // 接收客户端的消息通道
go clientReader(conn, input)

for {
	select {
	case line, ok := &lt;-input:
		if !ok {
			break
		}
		messages &lt;- who + &quot;: &quot; + line
	}
}

leaving &lt;- ch
messages &lt;- who + &quot; has left&quot;
conn.Close()

}
func clientWriter(conn net.Conn, ch <-chan string) {
for msg := range ch {
fmt.Fprintln(conn, msg)
}
}
func clientReader(conn net.Conn, ch chan<- string) {
buf := make([]byte, 1024)
for {
n, err := conn.Read(buf)
if err != nil {
break
}
ch <- string(buf[:n])
}
close(ch)
}
func main() {
listener, err := net.Listen("tcp", ":8888")
if err != nil {
panic(err)
}
go broadcaster()

for {
	conn, err := listener.Accept()
	if err != nil {
		fmt.Printf(&quot;failed to accept connection: %s\n&quot;, err)
		continue
	}
	go handleConn(conn)
}

}

package main
import (
"bufio"
"fmt"
"net"
"os"
"strings"
)
func main() {
conn, err := net.Dial("tcp", "localhost:8888")
if err != nil {
panic(err)
}
defer conn.Close()
go func() {
	// 接收服务端的消息并输出到控制台
	scanner := bufio.NewScanner(conn)
	for scanner.Scan() {
		fmt.Println(scanner.Text())
	}
}()

// 从控制台读取输入并发送到服务端
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
	line := scanner.Text()
	if strings.TrimSpace(line) == "" {
		continue
	}
	fmt.Fprintf(conn, "%s\n", line)
}

}