public virtual void Close()
{
if (socket != null)
{
socket.Close();
socket = null;
}
}
public virtual void Close()
{
if (socket != null)
{
socket.Close();
socket = null;
}
if (multicastListenSocket != null)
{
multicastListenSocket.Close();
multicastListenSocket = null;
}
}
public virtual void Open()
{
if (socket == null)
{
socket = new SlpSocket();
socket.NewPacket += new EventHandler <NewPacketEventArgs>(socket_NewPacket);
if (this is SlpUserAgent)
{
socket.Open(new IPEndPoint(NetworkAdapter, 0));
}
else
{
socket.Open(NetworkAdapter);
}
}
}
/// <summary>
/// Opens a unicast socket bound to any local port on <see cref="NetworkAdapter"/> for
/// sending and receiving SLP datagrams, and optionally also opens a socket listening to
/// the SLP well-known port (<see cref="SlpSocket.Port"/>) to receive multicast SLP
/// datagrams.
/// </summary>
/// <param name="openWellKnownPort">Whether the socket listening on the well-known port
/// should be opened or not. If false, the ephemeral port will join the multicast group
/// instead.</param>
public virtual void Open(bool openWellKnownPort)
{
//Open the socket on any available port, this will be used for all unicast communication.
//Using an assigned port rather than 427 ensures we are discoverable on a system running multiple SLP clients.
if (socket == null)
{
socket = new SlpSocket();
socket.NewPacket += new EventHandler <NewPacketEventArgs>(socket_NewPacket);
/* If we won't be opening the well known port to join the multicast group, we should
* join the multicast group with this port instead so that we do receive multicast traffic. */
socket.Open(new IPEndPoint(NetworkAdapter, port: 0), !openWellKnownPort);
}
//Open a socket to listen to multicast traffic on port 427, this socket is only used to listen for multicast traffic.
//As unicast traffic is not able to share port 427 we only use this socket to recieve multicast.
if (openWellKnownPort && multicastListenSocket is null)
{
multicastListenSocket = new SlpSocket();
multicastListenSocket.NewPacket += new EventHandler <NewPacketEventArgs>(socket_NewPacket);
multicastListenSocket.Open(NetworkAdapter, true);
}
}
