JoinMulticastGroup() [1/4]

void System.Net.Sockets.UdpClient.JoinMulticastGroup ( int ifindex, IPAddress multicastAddr )

inline

Definition at line 353 of file UdpClient.cs.

    {
        ThrowIfDisposed();
        if (multicastAddr == null)
        {
            throw new ArgumentNullException("multicastAddr");
        }
        if (ifindex < 0)
        {
            throw new ArgumentException(System.SR.net_value_cannot_be_negative, "ifindex");
        }
        if (_family != AddressFamily.InterNetworkV6)
        {
            throw new SocketException(10045);
        }
        IPv6MulticastOption optionValue = new IPv6MulticastOption(multicastAddr, ifindex);
        _clientSocket.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.AddMembership, optionValue);
    }

References System.Net.Sockets.UdpClient._clientSocket, System.Net.Sockets.UdpClient._family, System.SR.net_value_cannot_be_negative, System.Net.Sockets.Socket.SetSocketOption(), and System.Net.Sockets.UdpClient.ThrowIfDisposed().