Cara menggunakan bahasa Go untuk pengaturcaraan rangkaian

package main

import (
    "fmt"
    "net"
)

func main() {
    // 监听地址和端口
    listen, err := net.Listen("tcp", "localhost:8888")
    if err != nil {
        fmt.Println("Listen error:", err)
        return
    }
    defer listen.Close()

    fmt.Println("Server is running...")

    for {
        // 等待客户端连接
        conn, err := listen.Accept()
        if err != nil {
            fmt.Println("Accept error:", err)
            continue
        }
        fmt.Println("Client connected:", conn.RemoteAddr().String())

        // 处理客户端请求
        go handleConn(conn)
    }
}

func handleConn(conn net.Conn) {
    defer conn.Close()

    for {
        // 读取客户端发送的数据
        buf := make([]byte, 1024)
        n, err := conn.Read(buf)
        if err != nil {
            fmt.Println("Read error:", err)
            return
        }

        // 输出客户端发送的数据
        fmt.Println("Received:", string(buf[:n]))

        // 向客户端发送数据
        conn.Write([]byte("Hello, client!"))
    }
}

package main

import (
    "fmt"
    "net/http"
)

func main() {
    // 注册一个处理函数
    http.HandleFunc("/", handler)

    // 启动HTTP服务器
    err := http.ListenAndServe(":8888", nil)
    if err != nil {
        fmt.Println("ListenAndServe error:", err)
        return
    }
}

func handler(w http.ResponseWriter, r *http.Request) {
    // 处理HTTP请求
    fmt.Fprintf(w, "Hello, client!")
}

package main

import (
    "fmt"
    "net"
)

func main() {
    // 解析UDP地址
    addr, err := net.ResolveUDPAddr("udp", "localhost:8888")
    if err != nil {
        fmt.Println("ResolveUDPAddr error:", err)
        return
    }

    // 创建UDP连接
    conn, err := net.ListenUDP("udp", addr)
    if err != nil {
        fmt.Println("ListenUDP error:", err)
        return
    }
    defer conn.Close()

    fmt.Println("Server is running...")

    for {
        // 读取客户端发送的数据
        buf := make([]byte, 1024)
        n, remoteAddr, err := conn.ReadFromUDP(buf)
        if err != nil {
            fmt.Println("ReadFromUDP error:", err)
            continue
        }

        fmt.Println("Client connected:", remoteAddr.String())

        // 处理客户端请求
        go handleUDPConn(conn, remoteAddr, buf[:n])
    }
}

func handleUDPConn(conn *net.UDPConn, remoteAddr *net.UDPAddr, data []byte) {
    // 处理客户端请求
    fmt.Println("Received:", string(data))

    // 向客户端发送数据
    conn.WriteToUDP([]byte("Hello, client!"), remoteAddr)
}