[Mono-list] Porting UPnP Tools to MONO - Socket "ExclusiveAddressUse" problem

Ylian ysainthilaire at hotmail.com
Mon May 10 18:05:50 EDT 2010


I own the  http://opentools.homeip.net/dev-tools-for-upnp Developer Tools
for UPnP Technologies , I widely used set of tools for building and
debugging UPnP related software. I have gotten many requests to run the
tools on MONO and have gotten rid of all the C/C++ native code and so far,
it's working except for one problem:

I need to bind to UDP port 1900 non-exclusively to receive SSDP multicast
traffic. I use Ubuntu 10.04, MONO 2.4.4 and I get a "SocketException:
Protocol Option not supported" when trying to set UdpClient's
ExclusiveAddressUse property. Are there any alternatives?

I am also trying to find precedents for UPnP work on MONO. My multicast
socket setup code below (Apache 2.0 license).



http://opentools.homeip.net/ opentools.homeip.net 

    public class UPnPMulticastSniffer


        public delegate void PacketHandler(object sender, string Packet,
IPEndPoint Local, IPEndPoint From);

        public event PacketHandler OnPacket;

        private UdpClient client = null;

        public UPnPMulticastSniffer(IPEndPoint local)


            client = new UdpClient(local.AddressFamily);

            client.ExclusiveAddressUse = false;

SocketOptionName.ExclusiveAddressUse, false);

SocketOptionName.ReuseAddress, true);

            client.EnableBroadcast = true;


            if (local.AddressFamily == AddressFamily.InterNetwork) 
            if (local.AddressFamily == AddressFamily.InterNetworkV6) 
            client.BeginReceive(new AsyncCallback(OnReceiveSink), null);


        public void OnReceiveSink(IAsyncResult ar)


            IPEndPoint ep = null;

            byte[] buf = null;

            try { buf = client.EndReceive(ar, ref ep); } catch (Exception) {

            if (buf != null && OnPacket != null) OnPacket(this,
UTF8Encoding.UTF8.GetString(buf, 0, 
buf.Length), (IPEndPoint)client.Client.LocalEndPoint, ep);
            try { client.BeginReceive(new AsyncCallback(OnReceiveSink),
null); } catch (Exception) { }


        public void Dispose()


            if (client == null) return;


            client = null;



View this message in context: http://mono.1490590.n4.nabble.com/Porting-UPnP-Tools-to-MONO-Socket-ExclusiveAddressUse-problem-tp2173013p2173013.html
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