transferred from trunk/Generation3 of lidgren-network

Lidgren.Network/NetPeer.Discovery.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Net;
+
+namespace Lidgren.Network
+{
+	public partial class NetPeer
+	{
+		/// <summary>
+		/// Emit a discovery signal to all hosts on your subnet
+		/// </summary>
+		public void DiscoverLocalPeers(int serverPort)
+		{
+			NetOutgoingMessage om = CreateMessage();
+			SendUnconnectedLibraryMessage(om, NetMessageLibraryType.Discovery, new IPEndPoint(IPAddress.Broadcast, serverPort));
+		}
+
+		/// <summary>
+		/// Emit a discovery signal to a single known host
+		/// </summary>
+		public bool DiscoverKnownPeer(string host, int serverPort)
+		{
+			IPAddress address = NetUtility.Resolve(host);
+			if (address == null)
+				return false;
+			return DiscoverKnownPeer(new IPEndPoint(address, serverPort));
+		}
+
+		/// <summary>
+		/// Emit a discovery signal to a single known host
+		/// </summary>
+		public bool DiscoverKnownPeer(IPEndPoint endpoint)
+		{
+			NetOutgoingMessage om = CreateMessage();
+			SendUnconnectedLibraryMessage(om, NetMessageLibraryType.Discovery, endpoint);
+			return true;
+		}
+	}
+}