Did you test Go 1.9 betas or RCs ?
Le lundi 28 août 2017 01:14:20 UTC+2, oldCoderException a écrit :
>
> Hi all,
>
> I upgraded to Go 1.9 and since then UDP multicast code that has been
> running fine for over a year is now failing on JoinGroup. I run this
> program on linux Mint 18 as root (using sudo), both for the multicast
> permissions and also to allow listening on TCP port 80 and redirecting to
> port 443 for SSL. The error returned from JoinGroup is "operation not
> permitted" which I could expect for a non-privileged user, but not for
> root.
>
> If I recompile the program using Go 1.8.3 the exact same works again.
>
> I won't show all the code since there are several structs and "objects"
> involved, but here's the failing bit, with the interface, listen address,
> and group address all hard coded just for this example:
>
> iFace := "eno1"
> listenAddr := "0.0.0.0:12080"
> grpAddress := "224.0.0.12"
> inetConn, err3 := net.ListenPacket("udp4", listenAddr)
> if err3 != nil {
> alertMsg = bsutils.CreateFormattedBSAlert(bsutils.ALERT_CRITICAL,
> "ListenPacket Failed: %s", err3.Error())
> return nil, alertMsg
> }
>
> mConn := ipv4.NewPacketConn(inetConn)
> if err := mConn.JoinGroup(iFace, &net.UDPAddr{IP: grpAddress}); err != nil
> {
> alertMsg = bsutils.CreateFormattedBSAlert(bsutils.ALERT_CRITICAL,
> "JoinGroup Failed: %s", err.Error())
> return nil, alertMsg
> }
>
> If it gets past the above code, I then do a SetControlMessage and return
> mConn for normal serving.
>
> thanks,
> Paul
>
>
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