http://godoc.org/net#UDPConn.File
"The returned os.File's file descriptor is different from the connection's.
Attempting to change properties of the original using this duplicate may or
may not have the desired effect."
On Wednesday, 2 August 2017 23:34:16 UTC+10, jlu...@gmail.com wrote:
>
> Hi guys,
>
> I wrapped some code to do listen UDP port and set priority, like this
>
> func ListenUDP(t string, laddr *net.UDPAddr, priority int) (*net.UDPConn,
> error) {
> conn, err := net.ListenUDP(t, laddr)
> if err != nil {
> return nil, err
> }
>
> if priority < 0 {
> return conn, nil
> }
>
> file, err := conn.File()
> if err != nil {
> conn.Close()
> return nil, fmt.Errorf("error in getting file for the connection")
> }
> defer file.Close()
>
> err = syscall.SetsockoptInt(int(file.Fd()), syscall.SOL_SOCKET,
> syscall.SO_PRIORITY, priority)
> if err != nil {
> return nil, fmt.Errorf("error in setting priority option on
> socket: %s", err)
> }
>
> return conn, nil
> }
>
> And, read data from that port with timeout
>
> conn.SetReadDeadline(time.Now().Add(time.Second * 5))
> n, addr, err = conn.ReadFromUDP(buf)
>
> But, i found the deadline not work...
>
> Any good suggestions?
>
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