我正在通過 netcat 收聽 nc -lkp 1902每當我建立 tcp 連接并嘗試發送日志時，它都會工作        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")輸出example-2022/11/18 technique24.go:21: This is a regular message1example-2022/11/18 technique24.go:22: This is a regular message2example-2022/11/18 technique24.go:23: This is a regular message3example-2022/11/18 technique24.go:24: This is a regular message4example-2022/11/18 technique24.go:25: This is a regular message5example-2022/11/18 technique24.go:26: This is a regular message6但是每當我嘗試建立 udp 連接時它都不起作用，誰能解釋為什么我的記錄器上什么也沒有？        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")想要通過 udp 發送日志以減少積壓，嘗試先建立一個 tcp 連接并且它工作正常但 udp 不起作用，任何人都可以解釋我必須做些什么才能讓它工作嗎？