go实现tcp通讯

1.客户端代码

package main

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

func main(){
    conn,err:= net.Dial("tcp","127.0.0.1:8890")
    if err != nil {
        fmt.Println("is erro")
    }
    reader:= bufio.NewReader(os.Stdin)
    fmt.Printf("%v,\n","请写入内容")
    for {
        text,_:=reader.ReadString('\n')
        text = strings.TrimSpace(text)
        if text == "exit" {
            break
        }
        conn.Write([]byte(text))

    }
    conn.Close()
}

2.服务端代码

package main

import (
    "bufio"
    "fmt"
    "io"
    "net"
)

func process(conn net.Conn){
    defer conn.Close()
    var buf[1024]byte
    reader:=bufio.NewReader(conn)
    for {
        n,err:=reader.Read(buf[:])
        if err  == io.EOF {
            break
        }
        if err != nil {
            return
        }
        recvStr:= string(buf[:n])
        fmt.Printf("收到的数据为:%v\n",recvStr)
    }
}

func main(){
    listener,err:=net.Listen("tcp","127.0.0.1:8890")
    if err != nil {
        fmt.Println("start server is erros")
        return
    }
    for {
        conn,_:= listener.Accept()
        go process(conn)
    }
    defer listener.Close()
}