rework dlna project

RSSDP/SsdpDeviceLocator.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Rssdp.Infrastructure;
+
+namespace Rssdp
+{
+	// THIS IS A LINKED FILE - SHARED AMONGST MULTIPLE PLATFORMS	
+	// Be careful to check any changes compile and work for all platform projects it is shared in.
+
+	/// <summary>
+	/// Allows you to search the network for a particular device, device types, or UPnP service types. Also listenings for broadcast notifications of device availability and raises events to indicate changes in status.
+	/// </summary>
+	public sealed class SsdpDeviceLocator : SsdpDeviceLocatorBase
+	{
+
+		/// <summary>
+		/// Default constructor. Constructs a new instance using the default <see cref="ISsdpCommunicationsServer"/> and <see cref="ISocketFactory"/> implementations for this platform.
+		/// </summary>
+		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification="Can't expose along exception paths here (exceptions should be very rare anyway, and probably fatal too) and we shouldn't dipose the items we pass to base in any other case.")]
+		public SsdpDeviceLocator() : base(new SsdpCommunicationsServer(new SocketFactory(null)))
+		{
+			// This is not the problem you are looking for;
+			// Yes, this is poor man's dependency injection which some call an anti-pattern.
+			// However, it makes the library really simple to get started with or to use if the calling code isn't using IoC/DI.
+			// The fact we have injected dependencies is really an internal architectural implementation detail to allow for the
+			// cross platform and testing concerns of this library. It shouldn't be something calling code worries about and is 
+			// not a deliberate extension point, except where adding new platform support in which case...
+			// There is a constructor that takes a manually injected dependency anyway, so proper DI using
+			// a container or whatever can be done anyway.
+		}
+
+		/// <summary>
+		/// Full constructor. Constructs a new instance using the provided <see cref="ISsdpCommunicationsServer"/> implementation.
+		/// </summary>
+		public SsdpDeviceLocator(ISsdpCommunicationsServer communicationsServer)
+			: base(communicationsServer)
+		{
+		}
+
+	}
+}