Golang TCP 连接有效，但 UDP 无效-Golang-PHP中文网

Golang TCP 连接有效，但 UDP 无效

PHPz

发布： 2024-02-06 10:54:12

转载

596人浏览过

golang tcp 连接有效，但 udp 无效

问题内容

我正在通过 netcat 监听 nc -lkp 1902

每当我建立 tcp 连接并尝试发送日志时，它都会起作用

timeout := 30 * time.second
    conn, err := net.dialtimeout("tcp", "localhost:1902", timeout)
    if err != nil {
        panic("failed to connect to localhost:1902")
    }
    defer conn.close()

    f := log.ldate | log.lshortfile
    logger := log.new(conn, "example-", f)
    logger.println("this is a regular message1")
    logger.println("this is a regular message2")
    logger.println("this is a regular message3")
    logger.println("this is a regular message4")
    logger.println("this is a regular message5")
    logger.println("this is a regular message6")

登录后复制

输出

example-2022/11/18 technique24.go:21: this is a regular message1
example-2022/11/18 technique24.go:22: this is a regular message2
example-2022/11/18 technique24.go:23: this is a regular message3
example-2022/11/18 technique24.go:24: this is a regular message4
example-2022/11/18 technique24.go:25: this is a regular message5
example-2022/11/18 technique24.go:26: this is a regular message6

登录后复制

但是每当我尝试建立 udp 连接时它都不起作用，有人可以解释为什么我的记录器上什么也没有得到吗？

timeout := 30 * time.Second
    conn, err := net.DialTimeout("udp", "localhost:1902", timeout)
    if err != nil {
        panic("Failed to connect to localhost:1902")
    }
    defer conn.Close()

    f := log.Ldate | log.Lshortfile
    logger := log.New(conn, "example-", f)
    logger.Println("This is a regular message1")
    logger.Println("This is a regular message2")
    logger.Println("This is a regular message3")
    logger.Println("This is a regular message4")
    logger.Println("This is a regular message5")
    logger.Println("This is a regular message6")

登录后复制

想要制作一个小poc来通过udp发送日志以减少积压，尝试首先建立tcp连接，它工作正常，但udp不起作用，有人可以解释我必须做什么才能使其工作吗？ p>