Add C# P/INVOKE wrapper and client/server example

examples/csharp/Event.cs

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c)2013-2020 ZeroTier, Inc.
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file in the project's root directory.
+ *
+ * Change Date: 2024-01-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2.0 of the Apache License.
+ */
+/****/
+
+using System.Net;
+
+using ZeroTier;
+
+namespace ZeroTier
+{
+	/* Convenience structures for exposing lower level operational details to the user.
+	These structures do not have the same memory layout or content as those found in
+	include/ZeroTierSockets.h */
+
+	/// <summary>
+	/// Structure containing information about the local Node.
+	/// </summary>
+	public class NodeDetails
+	{
+		// Node ID
+		public ulong nodeId;
+
+		/**
+		 * The port used by the service to send and receive
+		 * all encapsulated traffic
+		 */
+		public ushort primaryPort;
+		public ushort secondaryPort;
+		public ushort tertiaryPort;
+
+		/**
+		 * ZT version
+		 */
+		public byte versionMajor;
+		public byte versionMinor;
+		public byte versionRev;
+	}
+
+	public class MulticastSubscription
+	{
+		ulong macAddress;
+		uint AdditionalDistinguishingInformation;
+	}
+
+	/// <summary>
+	/// Structure containing information about virtual networks.
+	/// </summary>
+	public class NetworkDetails
+	{
+		public ulong networkId;
+		public ulong macAddress;
+		public string networkName;
+		//public byte status;
+		public byte type;
+		public ushort mtu;
+		public bool bridgingAllowed;
+		public bool broadcastEnabled;
+		//public int portError;
+		public IPAddress[] assignedAddresses;
+		public IPAddress[] routes;
+		public MulticastSubscription[] multicastSubscroptions;
+	}
+
+	/// <summary>
+	/// Structure containing state information about the low-level ethernet driver.
+	/// </summary>
+	public class NetifDetails
+	{
+		public ulong networkId;
+		public ulong macAddress;
+		public int mtu;
+	}
+
+	/// <summary>
+	/// Structure containing routing information for networks.
+	/// </summary>
+	public class RouteDetails
+	{
+		public EndPoint target;
+		public EndPoint via;
+		public ushort flags;
+		public ushort metric;
+	}
+
+	/// <summary>
+	/// Structure containing information about remote peer reachability.
+	/// </summary>
+	public class PeerDetails
+	{
+		ulong nodeId;
+		byte versionMajor;
+		byte versionMinor;
+		byte versionRev;
+		int latency;
+		byte role;
+		IPAddress[] paths;
+	}
+
+	/// <summary>
+	/// Structure containing information about assigned addresses.
+	/// </summary>
+	public class AddrDetails
+	{
+		ulong networkId;
+		IPAddress address;
+	}
+
+	/// <summary>
+	/// Class used to convey details of a low-level network event to the user.
+	/// </summary>
+	public class Event
+	{
+		int _eventCode;
+		string _eventName;
+
+		public NodeDetails nodeDetails;
+		public NetworkDetails networkDetails;
+		public NetifDetails netifDetails;
+		public RouteDetails routeDetails;
+		public PeerDetails peerDetails;
+		public AddrDetails addrDetails;
+
+		public Event(int eventCode, string eventName)
+		{
+			_eventCode = eventCode;
+			_eventName = eventName;
+			nodeDetails = null;
+			networkDetails = null;
+			netifDetails = null;
+			routeDetails = null;
+			peerDetails = null;
+			addrDetails = null;
+		}
+
+		public int EventCode {
+			get {
+				return _eventCode;
+			}
+		}
+
+		public string EventName {
+			get {
+				return _eventName;
+			}
+		}
+	}
+}