Update C# wrapper (Namespace restructure, API additions, memory leak fix)

2021-02-16 00:14:26 -08:00
parent d4525a39c7
commit 02a401bf7f
9 changed files with 264 additions and 121 deletions
--- a/examples/csharp/example.cs
+++ b/examples/csharp/example.cs
@@ -5,24 +5,39 @@ using System.Net;
 using System.Net.Sockets; // For SocketType, etc
 using System.Text; // For Encoding

-using ZeroTier; // For ZeroTier.Node, ZeroTier.Event, and ZeroTier.Socket
+/**
+ *
+ * Namespaces explained:
+ *
+ * ZeroTier.Core (API to control a ZeroTier Node)
+ *   -> class ZeroTier.Core.Node
+ *   -> class ZeroTier.Core.Event
+ *
+ * ZeroTier.Sockets (Socket API similar to System.Net.Sockets)
+ *   -> class ZeroTier.Sockets.Socket
+ *   -> class ZeroTier.Sockets.SocketException
+ *
+ * ZeroTier.Central (upcoming)
+ *
+ */
+using ZeroTier;

 public class ExampleApp {

-	ZeroTier.Node node;
+	ZeroTier.Core.Node node;

 	/**
 	 * Initialize and start ZeroTier
 	 */
 	public void StartZeroTier(string configFilePath, ushort servicePort, ulong networkId)
 	{
-		node = new ZeroTier.Node(configFilePath, OnZeroTierEvent, servicePort);
+		node = new ZeroTier.Core.Node(configFilePath, OnZeroTierEvent, servicePort);
 		node.Start(); // Network activity only begins after calling Start()

 		/* How you do this next part is up to you, but essentially we're waiting for the node
-		to signal to us (via a ZeroTier.Event) that it has access to the internet and is
-		able to talk to one of our root servers. As a convenience you can just periodically check
-		IsOnline() instead of looking for the event via the callback. */
+		to signal to us via OnZeroTierEvent(ZeroTier.Core.Event) that it has access to the
+		internet and is able to talk to one of our root servers. As a convenience you can just
+		periodically check Node.IsOnline() instead of looking for the event via the callback. */
 		while (!node.IsOnline()) { Thread.Sleep(100); }

 		/* After the node comes online you may now join/leave networks. You will receive
@@ -31,7 +46,7 @@ public class ExampleApp {
 		or removed routes, etc. */
 		node.Join(networkId);

-		/* Note that ZeroTier.Socket calls will fail if there are no routes available, for this
+		/* Note that ZeroTier.Sockets.Socket calls will fail if there are no routes available, for this
 		reason we should wait to make those calls until the node has indicated to us that at
 		least one network has been joined successfully. */
 		while (!node.HasRoutes()) { Thread.Sleep(100); }
@@ -49,7 +64,7 @@ public class ExampleApp {
 	 * Your application should process event messages and return control as soon as possible. Blocking
 	 * or otherwise time-consuming operations are not reccomended here.
 	 */
-	public void OnZeroTierEvent(ZeroTier.Event e)
+	public void OnZeroTierEvent(ZeroTier.Core.Event e)
 	{
 		Console.WriteLine("Event.eventCode = {0} ({1})", e.EventCode, e.EventName);

@@ -73,7 +88,7 @@ public class ExampleApp {
 		byte[] bytes = new Byte[1024];

 		Console.WriteLine(localEndPoint.ToString());
-		ZeroTier.Socket listener = new ZeroTier.Socket(AddressFamily.InterNetwork,
+		ZeroTier.Sockets.Socket listener = new ZeroTier.Sockets.Socket(AddressFamily.InterNetwork,
 			SocketType.Stream, ProtocolType.Tcp );

 		// Bind the socket to the local endpoint and
@@ -89,13 +104,13 @@ public class ExampleApp {
 				// Program is suspended while waiting for an incoming connection.
 				bool nonblocking = true;

-				ZeroTier.Socket handler;
+				ZeroTier.Sockets.Socket handler;

 				if (nonblocking) { // Non-blocking style Accept() loop using Poll()
 					Console.WriteLine("Starting non-blocking Accept() loop...");
 					listener.Blocking = false;
 					// loop
-					int timeout = 1000000; // microseconds (1 second)
+					int timeout = 100000; // microseconds (1 second)
 					while (true) {
 						Console.WriteLine("Polling... (for data or incoming connections)");
 						if (listener.Poll(timeout, SelectMode.SelectRead)) {
@@ -103,7 +118,7 @@ public class ExampleApp {
 							handler = listener.Accept();
 							break;
 						}
-						Thread.Sleep(1000);
+						//Thread.Sleep(5);
 					}
 				}
 				else { // Blocking style
@@ -113,26 +128,40 @@ public class ExampleApp {
 				data = null;
 				Console.WriteLine("Accepted connection from: " + handler.RemoteEndPoint.ToString());

+				// handler.ReceiveTimeout = 1000;
+
 				// An incoming connection needs to be processed.
 				while (true) {
-					int bytesRec = handler.Receive(bytes);
-					Console.WriteLine("Bytes received: {0}", bytesRec);
-					data += Encoding.ASCII.GetString(bytes,0,bytesRec);
-
+					int bytesRec = 0;
+					try {
+						Console.WriteLine("Receiving...");
+						bytesRec = handler.Receive(bytes);
+					}
+					catch (ZeroTier.Sockets.SocketException e)
+					{
+						Console.WriteLine("ServiveErrorCode={0} SocketErrorCode={1}", e.ServiceErrorCode, e.SocketErrorCode);
+					}
 					if (bytesRec > 0) {
+						Console.WriteLine("Bytes received: {0}", bytesRec);
+						data = Encoding.ASCII.GetString(bytes,0,bytesRec);
 						Console.WriteLine( "Text received : {0}", data);
-						break;
-					}
-				}
+						//break;
 						// Echo the data back to the client.
 						byte[] msg = Encoding.ASCII.GetBytes(data);
-
 						handler.Send(msg);
+					}
+					else
+					{
+						System.GC.Collect();
+						Console.WriteLine("No data...");
+					}
+				}
+
 				handler.Shutdown(SocketShutdown.Both);
 				handler.Close();
 			}

-		} catch (ZeroTier.SocketException e) {
+		} catch (ZeroTier.Sockets.SocketException e) {
 			Console.WriteLine(e);
 			Console.WriteLine("ServiveErrorCode={0} SocketErrorCode={1}", e.ServiceErrorCode, e.SocketErrorCode);
 		}
@@ -151,7 +180,7 @@ public class ExampleApp {
 		// Connect to a remote device.
 		try {
 			// Create a TCP/IP  socket.
-			ZeroTier.Socket sender = new ZeroTier.Socket(AddressFamily.InterNetwork,
+			ZeroTier.Sockets.Socket sender = new ZeroTier.Sockets.Socket(AddressFamily.InterNetwork,
 				SocketType.Stream, ProtocolType.Tcp );

 			// Connect the socket to the remote endpoint. Catch any errors.
@@ -181,7 +210,7 @@ public class ExampleApp {

 			} catch (ArgumentNullException ane) {
 				Console.WriteLine("ArgumentNullException : {0}",ane.ToString());
-			} catch (ZeroTier.SocketException e) {
+			} catch (ZeroTier.Sockets.SocketException e) {
 				Console.WriteLine(e);
 				Console.WriteLine("ServiveErrorCode={0} SocketErrorCode={1}", e.ServiceErrorCode, e.SocketErrorCode);
 			}
--- a/pkg/nuget/ZeroTier.Sockets/ZeroTier.Sockets.x64.nuspec
+++ b/pkg/nuget/ZeroTier.Sockets/ZeroTier.Sockets.x64.nuspec
@@ -9,7 +9,7 @@
 		<license type="file">LICENSE.txt</license>
 		<icon>icon.png</icon>
 		<requireLicenseAcceptance>false</requireLicenseAcceptance>
-		<releaseNotes>Initial release</releaseNotes>
+		<releaseNotes>Namespace adjustments, additions to Socket API, memory leak fixes.</releaseNotes>
 		<description>Encrypted P2P SD-WAN networking layer (Managed C# API) [x64]</description>
 		<title>Encrypted P2P SD-WAN networking layer (Managed C# API) [x64]</title>
 		<copyright>Copyright 2021 ZeroTier, Inc.</copyright>
--- a/pkg/nuget/ZeroTier.Sockets/nuget.org.md
+++ b/pkg/nuget/ZeroTier.Sockets/nuget.org.md
@@ -0,0 +1,29 @@
+[ZeroTier](https://www.zerotier.com) SDK
+=====
+
+Connect physical devices, virtual devices, and application instances as if everything is on a single LAN.
+
+ZeroTier brings your network into user-space. We've paired our network hypervisor core with a TCP/UDP/IP stack [(lwIP)](https://en.wikipedia.org/wiki/LwIP) to provide your application with an exclusive and private virtual network interface. All traffic on this interface is end-to-end encrypted between each peer and we provide an easy-to-use socket interface similar to [Berkeley Sockets](https://en.wikipedia.org/wiki/Berkeley_sockets). Since we aren't using the kernel's IP stack that means no drivers, no root, and no host configuration requirements.
+
+ - Website: https://www.zerotier.com/
+ - ZeroTier Manual: https://www.zerotier.com/manual/
+ - ZeroTier Repo: https://github.com/zerotier/zerotierone
+ - SDK Repo: https://github.com/zerotier/libzt
+ - Forum: https://discuss.zerotier.com
+
+## 1.3.3-alpha.2 Release Notes
+
+### New namespace structure:
+- `ZeroTier.Core` (API to control a ZeroTier Node)
+    - `class ZeroTier.Core.Node`
+    - `class ZeroTier.Core.Event`
+- `ZeroTier.Sockets`
+    - `class ZeroTier.Sockets.Socket`
+    - `class ZeroTier.Sockets.SocketException`
+- `ZeroTier.Central` (upcoming)
+
+### Added to Socket API
+ - `Socket.ReceiveTimeout`, `Socket.SendTimeout`, etc.
+
+### Bugs
+ - Fixed memory leak caused by unmanaged resources not being released.
--- a/src/bindings/csharp/Constants.cs
+++ b/src/bindings/csharp/Constants.cs
@@ -250,7 +250,7 @@ namespace ZeroTier
 		public static readonly short MSG_DONTWAIT    = 0x0008;
 		public static readonly short MSG_MORE        = 0x0010;

-		// Macro's for defining ioctl() command values
+		// Macros for defining ioctl() command values
 		/*
 		public static readonly ulong IOCPARM_MASK    = 0x7fU;
 		public static readonly ulong IOC_VOID        = 0x20000000UL;
--- a/src/bindings/csharp/Event.cs
+++ b/src/bindings/csharp/Event.cs
@@ -15,7 +15,7 @@ using System.Net;

 using ZeroTier;

-namespace ZeroTier
+namespace ZeroTier.Core
 {
 	/* 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
--- a/src/bindings/csharp/Node.cs
+++ b/src/bindings/csharp/Node.cs
@@ -14,6 +14,8 @@
 using System.Runtime.InteropServices;
 using System;

+using ZeroTier;
+
 // Prototype of callback used by ZeroTier to signal events to C# application
 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 public delegate void CSharpCallbackWithStruct(IntPtr msgPtr);
@@ -21,9 +23,9 @@ public delegate void CSharpCallbackWithStruct(IntPtr msgPtr);
 /// <summary>
 /// ZeroTier SDK
 /// </summary>
-namespace ZeroTier
+namespace ZeroTier.Core
 {
-	public delegate void ZeroTierManagedEventCallback(ZeroTier.Event nodeEvent);
+	public delegate void ZeroTierManagedEventCallback(ZeroTier.Core.Event nodeEvent);

 	/// <summary>
 	/// ZeroTier Node - Virtual network subsystem
@@ -45,11 +47,11 @@ namespace ZeroTier
 			zts_callback_msg msg =
 				(zts_callback_msg)Marshal.PtrToStructure(msgPtr, typeof(zts_callback_msg));

-			ZeroTier.Event newEvent = null;
+			ZeroTier.Core.Event newEvent = null;

 			// Node events
 			if (msg.eventCode == Constants.EVENT_NODE_UP) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NODE_UP");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NODE_UP");
 			}
 			if (msg.eventCode == Constants.EVENT_NODE_ONLINE) {
 				_isOnline = true;
@@ -57,135 +59,135 @@ namespace ZeroTier
 				zts_node_details details =
 					(zts_node_details)Marshal.PtrToStructure(msg.node, typeof(zts_node_details));
 				_nodeId = details.address;
-				newEvent = new ZeroTier.Event(msg.eventCode, "EVENT_NODE_ONLINE");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode, "EVENT_NODE_ONLINE");
 			}
 			if (msg.eventCode == Constants.EVENT_NODE_OFFLINE) {
 				_isOnline = false;
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NODE_OFFLINE");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NODE_OFFLINE");
 			}
 			if (msg.eventCode == Constants.EVENT_NODE_NORMAL_TERMINATION) {
 				_isOnline = false;
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NODE_NORMAL_TERMINATION");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NODE_NORMAL_TERMINATION");
 			}
 			if (msg.eventCode == Constants.EVENT_NODE_DOWN) {
 				_isOnline = false;
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NODE_DOWN");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NODE_DOWN");
 			}
 			if (msg.eventCode == Constants.EVENT_NODE_IDENTITY_COLLISION) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NODE_IDENTITY_COLLISION");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NODE_IDENTITY_COLLISION");
 				_isOnline = false;
 			}
 			if (msg.eventCode == Constants.EVENT_NODE_UNRECOVERABLE_ERROR) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NODE_UNRECOVERABLE_ERROR");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NODE_UNRECOVERABLE_ERROR");
 				_isOnline = false;
 			}

 			// Network events
 			if (msg.eventCode == Constants.EVENT_NETWORK_NOT_FOUND) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_NOT_FOUND");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_NOT_FOUND");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_REQ_CONFIG) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_REQ_CONFIG");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_REQ_CONFIG");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_ACCESS_DENIED) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_ACCESS_DENIED");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_ACCESS_DENIED");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_READY_IP4) {
 				_joinedAtLeastOneNetwork = true;
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_READY_IP4");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_READY_IP4");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_READY_IP6) {
 				_joinedAtLeastOneNetwork = true;
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_READY_IP6");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_READY_IP6");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_DOWN) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_DOWN");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_DOWN");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_CLIENT_TOO_OLD) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_CLIENT_TOO_OLD");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_CLIENT_TOO_OLD");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_REQ_CONFIG) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_REQ_CONFIG");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_REQ_CONFIG");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_OK) {
 				zts_network_details unmanagedDetails =
 					(zts_network_details)Marshal.PtrToStructure(msg.network, typeof(zts_network_details));
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_OK");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_OK");
 				newEvent.networkDetails = new NetworkDetails();
 				newEvent.networkDetails.networkId = unmanagedDetails.nwid;
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_ACCESS_DENIED) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_ACCESS_DENIED");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_ACCESS_DENIED");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_READY_IP4_IP6) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_READY_IP4_IP6");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_READY_IP4_IP6");
 			}
 			if (msg.eventCode == Constants.EVENT_NETWORK_UPDATE) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETWORK_UPDATE");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETWORK_UPDATE");
 			}

 			// Stack events
 			if (msg.eventCode == Constants.EVENT_STACK_UP) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_STACK_UP");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_STACK_UP");
 			}
 			if (msg.eventCode == Constants.EVENT_STACK_DOWN) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_STACK_DOWN");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_STACK_DOWN");
 			}

 			// Address events
 			if (msg.eventCode == Constants.EVENT_ADDR_ADDED_IP4) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_ADDR_ADDED_IP4");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_ADDR_ADDED_IP4");
 			}
 			if (msg.eventCode == Constants.EVENT_ADDR_ADDED_IP6) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_ADDR_ADDED_IP6");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_ADDR_ADDED_IP6");
 			}
 			if (msg.eventCode == Constants.EVENT_ADDR_REMOVED_IP4) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_ADDR_REMOVED_IP4");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_ADDR_REMOVED_IP4");
 			}
 			if (msg.eventCode == Constants.EVENT_ADDR_REMOVED_IP6) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_ADDR_REMOVED_IP6");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_ADDR_REMOVED_IP6");
 			}
 			// peer events
 			if (msg.eventCode == Constants.EVENT_PEER_DIRECT) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_PEER_DIRECT");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_PEER_DIRECT");
 			}
 			if (msg.eventCode == Constants.EVENT_PEER_RELAY) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_PEER_RELAY");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_PEER_RELAY");
 			}
-			// newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_PEER_UNREACHABLE");
+			// newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_PEER_UNREACHABLE");
 			if (msg.eventCode == Constants.EVENT_PEER_PATH_DISCOVERED) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_PEER_PATH_DISCOVERED");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_PEER_PATH_DISCOVERED");
 			}
 			if (msg.eventCode == Constants.EVENT_PEER_PATH_DEAD) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_PEER_PATH_DEAD");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_PEER_PATH_DEAD");
 			}

 			// Route events
 			if (msg.eventCode == Constants.EVENT_ROUTE_ADDED) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_ROUTE_ADDED");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_ROUTE_ADDED");
 			}
 			if (msg.eventCode == Constants.EVENT_ROUTE_REMOVED) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_ROUTE_REMOVED");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_ROUTE_REMOVED");
 			}

 			// Netif events
 			if (msg.eventCode == Constants.EVENT_NETIF_UP) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETIF_UP");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETIF_UP");
 			}
 			if (msg.eventCode == Constants.EVENT_NETIF_DOWN) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETIF_DOWN");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETIF_DOWN");
 			}
 			if (msg.eventCode == Constants.EVENT_NETIF_REMOVED) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETIF_REMOVED");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETIF_REMOVED");
 			}
 			if (msg.eventCode == Constants.EVENT_NETIF_LINK_UP) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETIF_LINK_UP");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETIF_LINK_UP");
 			}
 			if (msg.eventCode == Constants.EVENT_NETIF_LINK_DOWN) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_NETIF_LINK_DOWN");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_NETIF_LINK_DOWN");
 			}
 			if (msg.eventCode == Constants.EVENT_ADDR_REMOVED_IP6) {
-				newEvent = new ZeroTier.Event(msg.eventCode,"EVENT_ADDR_REMOVED_IP6");
+				newEvent = new ZeroTier.Core.Event(msg.eventCode,"EVENT_ADDR_REMOVED_IP6");
 			}

 			// Pass the converted Event to the managed callback (visible to user)
--- a/src/bindings/csharp/Socket.cs
+++ b/src/bindings/csharp/Socket.cs
@@ -13,7 +13,7 @@

 using System; // For ObjectDisposedException
 using System.Net; // For IPEndPoint
-using System.Net.Sockets; // For ZeroTier.SocketException
+using System.Net.Sockets; // For ZeroTier.Sockets.SocketException
 using System.Runtime.InteropServices;

 using ZeroTier;
@@ -21,7 +21,7 @@ using ZeroTier;
 /// <summary>
 /// ZeroTier SDK
 /// </summary>
-namespace ZeroTier
+namespace ZeroTier.Sockets
 {
 	/// <summary>
 	/// ZeroTier Socket - An lwIP socket mediated over a ZeroTier virtual link
@@ -45,6 +45,8 @@ namespace ZeroTier
 		bool _isClosed;
 		bool _isListening;
 		bool _isBlocking;
+		bool _isBound;
+		bool _isConnected;

 		AddressFamily _socketFamily;
 		SocketType _socketType;
@@ -101,7 +103,7 @@ namespace ZeroTier
 			}
 			if ((_fd = zts_socket(family, type, protocol)) < 0)
 			{
-				throw new ZeroTier.SocketException((int)_fd);
+				throw new ZeroTier.Sockets.SocketException((int)_fd);
 			}
 			_socketFamily = addressFamily;
 			_socketType = socketType;
@@ -132,13 +134,14 @@ namespace ZeroTier
 			}
 			if (_fd < 0) {
 				// Invalid file descriptor
-				throw new ZeroTier.SocketException((int)Constants.ERR_SOCKET);
+				throw new ZeroTier.Sockets.SocketException((int)Constants.ERR_SOCKET);
 			}
 			if (remoteEndPoint == null) {
 				throw new ArgumentNullException("remoteEndPoint");
 			}
 			int err = Constants.ERR_OK;
 			int addrlen = 0;
+			IntPtr remoteAddrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_sockaddr)));
 			if (remoteEndPoint.AddressFamily == AddressFamily.InterNetwork)
 			{	            
 				zts_sockaddr_in sa = new zts_sockaddr_in();
@@ -159,10 +162,9 @@ namespace ZeroTier
 				sa.sin_addr = remoteEndPoint.Address.GetAddressBytes();
 				sa.sin_len = (byte)addrlen; // lwIP-specific
 			
-				IntPtr ptr1 = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_sockaddr)));
-				Marshal.StructureToPtr(sa, ptr1, false);
-				//zts_sockaddr sAddr = (zts_sockaddr)Marshal.PtrToStructure(ptr1, typeof(zts_sockaddr));
-				err = zts_connect(_fd, ptr1, (byte)addrlen);
+				Marshal.StructureToPtr(sa, remoteAddrPtr, false);
+				//zts_sockaddr sAddr = (zts_sockaddr)Marshal.PtrToStructure(remoteAddrPtr, typeof(zts_sockaddr));
+				err = zts_connect(_fd, remoteAddrPtr, (byte)addrlen);

 			}
 			if (remoteEndPoint.AddressFamily == AddressFamily.InterNetworkV6)
@@ -179,9 +181,11 @@ namespace ZeroTier
 				*/
 			}
 			if (err < 0) {
-				throw new ZeroTier.SocketException(err, ZeroTier.Node.ErrNo);
+				throw new ZeroTier.Sockets.SocketException(err, ZeroTier.Core.Node.ErrNo);
 			}
+			Marshal.FreeHGlobal(remoteAddrPtr);
 			_remoteEndPoint = remoteEndPoint;
+			_isConnected = true;
 		}

 		public void Bind(IPEndPoint localEndPoint)
@@ -191,13 +195,14 @@ namespace ZeroTier
 			}
 			if (_fd < 0) {
 				// Invalid file descriptor
-				throw new ZeroTier.SocketException((int)Constants.ERR_SOCKET);
+				throw new ZeroTier.Sockets.SocketException((int)Constants.ERR_SOCKET);
 			}
 			if (localEndPoint == null) {
 				throw new ArgumentNullException("localEndPoint");
 			}
 			int err = Constants.ERR_OK;
 			int addrlen = 0;
+			IntPtr localAddrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_sockaddr)));
 			if (localEndPoint.AddressFamily == AddressFamily.InterNetwork)
 			{	            
 				zts_sockaddr_in sa = new zts_sockaddr_in();
@@ -218,9 +223,8 @@ namespace ZeroTier
 				sa.sin_addr = localEndPoint.Address.GetAddressBytes();
 				sa.sin_len = (byte)addrlen; // lwIP-specific

-				IntPtr ptr1 = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_sockaddr)));
-				Marshal.StructureToPtr(sa, ptr1, false);
-				err = zts_bind(_fd, ptr1, (byte)addrlen);
+				Marshal.StructureToPtr(sa, localAddrPtr, false);
+				err = zts_bind(_fd, localAddrPtr, (byte)addrlen);
 			}
 			if (localEndPoint.AddressFamily == AddressFamily.InterNetworkV6)
 			{
@@ -236,9 +240,11 @@ namespace ZeroTier
 				*/
 			}
 			if (err < 0) {
-				throw new ZeroTier.SocketException((int)err);
+				throw new ZeroTier.Sockets.SocketException((int)err);
 			}
+			Marshal.FreeHGlobal(localAddrPtr);
 			_localEndPoint = localEndPoint;
+			_isBound = true;
 		}

 		public void Listen(int backlog)
@@ -248,12 +254,12 @@ namespace ZeroTier
 			}
 			if (_fd < 0) {
 				// Invalid file descriptor
-				throw new ZeroTier.SocketException((int)Constants.ERR_SOCKET);
+				throw new ZeroTier.Sockets.SocketException((int)Constants.ERR_SOCKET);
 			}
 			int err = Constants.ERR_OK;
 			if ((err = zts_listen(_fd, backlog)) < 0) {
 				// Invalid backlog value perhaps?
-				throw new ZeroTier.SocketException((int)Constants.ERR_SOCKET);
+				throw new ZeroTier.Sockets.SocketException((int)Constants.ERR_SOCKET);
 			}
 			_isListening = true;
 		}
@@ -265,7 +271,7 @@ namespace ZeroTier
 			}
 			if (_fd < 0) {
 				// Invalid file descriptor
-				throw new ZeroTier.SocketException((int)Constants.ERR_SOCKET);
+				throw new ZeroTier.Sockets.SocketException((int)Constants.ERR_SOCKET);
 			}
 			if (_isListening == false) {
 				throw new InvalidOperationException("Socket is not in a listening state. Call Listen() first");
@@ -281,7 +287,7 @@ namespace ZeroTier

 			int err = zts_accept(_fd, remoteAddrPtr, addrlenPtr);
 			if (err < 0) {
-				throw new ZeroTier.SocketException(err, ZeroTier.Node.ErrNo);
+				throw new ZeroTier.Sockets.SocketException(err, ZeroTier.Core.Node.ErrNo);
 			}
 			in4 = (zts_sockaddr_in)Marshal.PtrToStructure(remoteAddrPtr, typeof(zts_sockaddr_in));
 			// Convert sockaddr contents to IPEndPoint
@@ -290,6 +296,7 @@ namespace ZeroTier
 			// Create new socket by providing file descriptor returned from zts_accept call.
 			Socket clientSocket = new Socket(
 				err, _socketFamily, _socketType, _socketProtocol, _localEndPoint, clientEndPoint);
+			Marshal.FreeHGlobal(remoteAddrPtr);
 			return clientSocket;
 		}

@@ -323,20 +330,6 @@ namespace ZeroTier
 			_isClosed = true;
 		}

-		public EndPoint RemoteEndPoint
-		{
-			get {
-				return _remoteEndPoint;
-			}
-		}
-
-		public EndPoint LocalEndPoint
-		{
-			get {
-				return _localEndPoint;
-			}
-		}
-
 		public bool Blocking
 		{
 			get {
@@ -348,18 +341,16 @@ namespace ZeroTier
 				}
 				int opts = 0;
 				if ((opts = zts_fcntl(_fd, (int)(ZeroTier.Constants.F_GETFL), 0)) < 0) {
-					throw new ZeroTier.SocketException(opts, ZeroTier.Node.ErrNo);
+					throw new ZeroTier.Sockets.SocketException(opts, ZeroTier.Core.Node.ErrNo);
 				}
-				Console.WriteLine("before.opts={0}", opts);
 				if (value) { // Blocking
 					opts = opts & (~(ZeroTier.Constants.O_NONBLOCK));
 				}
 				if (!value) { // Non-Blocking
 					opts = opts | (int)(ZeroTier.Constants.O_NONBLOCK);
 				}
-				Console.WriteLine("after.opts={0}", opts);
 				if ((opts = zts_fcntl(_fd, ZeroTier.Constants.F_SETFL, (int)opts)) < 0) {
-					throw new ZeroTier.SocketException(opts, ZeroTier.Node.ErrNo);
+					throw new ZeroTier.Sockets.SocketException(opts, ZeroTier.Core.Node.ErrNo);
 				}
 				_isBlocking = value;
 			}
@@ -379,7 +370,8 @@ namespace ZeroTier
 				poll_set.events = (short)((byte)ZeroTier.Constants.POLLOUT);
 			}
 			if (mode == SelectMode.SelectError) {
-				poll_set.events = (short)((byte)ZeroTier.Constants.POLLERR | (byte)ZeroTier.Constants.POLLNVAL);
+				poll_set.events = (short)((byte)ZeroTier.Constants.POLLERR |
+					(byte)ZeroTier.Constants.POLLNVAL);
 			}
 			IntPtr poll_fd_ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_pollfd)));
 			Marshal.StructureToPtr(poll_set, poll_fd_ptr, false);
@@ -387,20 +379,23 @@ namespace ZeroTier
 			int timeout_ms = (microSeconds / 1000);
 			uint numfds = 1;
 			if ((result = zts_poll(poll_fd_ptr, numfds, timeout_ms)) < 0) {
-				throw new ZeroTier.SocketException(result, ZeroTier.Node.ErrNo);
+				throw new ZeroTier.Sockets.SocketException(result, ZeroTier.Core.Node.ErrNo);
 			}
 			poll_set = (zts_pollfd)Marshal.PtrToStructure(poll_fd_ptr, typeof(zts_pollfd));
-			if (result == 0) { return false; } // No events
+			if (result != 0) {
 				if (mode == SelectMode.SelectRead) {
-				return ((byte)poll_set.revents & (byte)ZeroTier.Constants.POLLIN) != 0;
+					result = Convert.ToInt32(((byte)poll_set.revents & (byte)ZeroTier.Constants.POLLIN) != 0);
 				}
 				if (mode == SelectMode.SelectWrite) {
-				return ((byte)poll_set.revents & (byte)ZeroTier.Constants.POLLOUT) != 0;
+					result = Convert.ToInt32(((byte)poll_set.revents & (byte)ZeroTier.Constants.POLLOUT) != 0);
 				}
 				if (mode == SelectMode.SelectError) {
-				return ((poll_set.revents & (byte)ZeroTier.Constants.POLLERR) != 0) || ((poll_set.revents & (byte)ZeroTier.Constants.POLLNVAL) != 0);
+					result = Convert.ToInt32(((poll_set.revents & (byte)ZeroTier.Constants.POLLERR) != 0) ||
+					((poll_set.revents & (byte)ZeroTier.Constants.POLLNVAL) != 0));
 				}
-			return false;
+			}
+			Marshal.FreeHGlobal(poll_fd_ptr);
+			return result > 0;
 		}

 		public Int32 Send(Byte[] buffer)
@@ -409,7 +404,7 @@ namespace ZeroTier
 				throw new ObjectDisposedException("Socket has been closed");
 			}
 			if (_fd < 0) {
-				throw new ZeroTier.SocketException((int)ZeroTier.Constants.ERR_SOCKET);
+				throw new ZeroTier.Sockets.SocketException((int)ZeroTier.Constants.ERR_SOCKET);
 			}
 			if (buffer == null) {
 				throw new ArgumentNullException("buffer");
@@ -425,7 +420,7 @@ namespace ZeroTier
 				throw new ObjectDisposedException("Socket has been closed");
 			}
 			if (_fd < 0) {
-				throw new ZeroTier.SocketException((int)ZeroTier.Constants.ERR_SOCKET);
+				throw new ZeroTier.Sockets.SocketException((int)ZeroTier.Constants.ERR_SOCKET);
 			}
 			if (buffer == null) {
 				throw new ArgumentNullException("buffer");
@@ -435,6 +430,87 @@ namespace ZeroTier
 			return zts_recv(_fd, bufferPtr, (uint)Buffer.ByteLength(buffer), (int)flags);
 		}

+		private void _set_timeout(int timeout_ms, int optname)
+		{
+			zts_timeval tv = new zts_timeval();
+			// Convert milliseconds to timeval struct
+			tv.tv_sec = timeout_ms / 1000;
+			tv.tv_usec = (timeout_ms % 1000) * 1000;
+			IntPtr tv_ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_timeval)));
+			Marshal.StructureToPtr(tv, tv_ptr, false);
+			ushort option_size = (ushort)Marshal.SizeOf(typeof(zts_sockaddr_in));
+			int err = 0;
+			if ((err = zts_setsockopt(_fd, ZeroTier.Constants.SOL_SOCKET,
+				ZeroTier.Constants.SO_RCVTIMEO, tv_ptr, option_size)) < 0) {
+				throw new ZeroTier.Sockets.SocketException(err, ZeroTier.Core.Node.ErrNo);
+			}
+			Marshal.FreeHGlobal(tv_ptr);
+		}
+
+		private int _get_timeout(int optname)
+		{
+			zts_timeval tv = new zts_timeval();
+			IntPtr tv_ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_timeval)));
+			Marshal.StructureToPtr(tv, tv_ptr, false);
+			ushort optlen = (ushort)Marshal.SizeOf(typeof(zts_timeval));
+			GCHandle optlen_gc_handle = GCHandle.Alloc(optlen, GCHandleType.Pinned);
+			IntPtr optlen_ptr = optlen_gc_handle.AddrOfPinnedObject();
+			int err = 0;
+			if ((err = zts_getsockopt(_fd, ZeroTier.Constants.SOL_SOCKET,
+				ZeroTier.Constants.SO_RCVTIMEO, tv_ptr, optlen_ptr)) < 0) {
+				throw new ZeroTier.Sockets.SocketException(err, ZeroTier.Core.Node.ErrNo);
+			}
+			tv = (zts_timeval)Marshal.PtrToStructure(tv_ptr, typeof(zts_timeval));
+			optlen_gc_handle.Free();
+			Marshal.FreeHGlobal(tv_ptr);
+			// Convert timeval struct to milliseconds
+			return (int)((tv.tv_sec * 1000) + (tv.tv_usec / 1000));
+		}
+
+		public int ReceiveTimeout
+		{
+			get { return _get_timeout(ZeroTier.Constants.SO_RCVTIMEO); }
+			set { _set_timeout(value, ZeroTier.Constants.SO_RCVTIMEO); }
+		}
+
+		public int SendTimeout
+		{
+			get { return _get_timeout(ZeroTier.Constants.SO_SNDTIMEO); }
+			set { _set_timeout(value, ZeroTier.Constants.SO_SNDTIMEO); }
+		}
+
+		/* TODO 
+		public int ReceiveBufferSize { get; set; }
+
+		public int SendBufferSize { get; set; }
+
+		public short Ttl { get; set; }
+
+		public LingerOption LingerState { get; set; }
+
+		public bool NoDelay { get; set;  }
+		*/
+
+		public bool Connected { get { return _isConnected; } }
+
+		public bool IsBound { get { return _isBound; } }
+
+		public AddressFamily AddressFamily { get { return _socketFamily; } }
+
+		public SocketType SocketType { get { return _socketType; } }
+
+		public ProtocolType ProtocolType { get { return _socketProtocol; } }
+
+		/* .NET has moved to OSSupportsIPv* but libzt isn't an OS so we keep this old convention */
+		public static bool SupportsIPv4 { get { return true; } }
+
+		/* .NET has moved to OSSupportsIPv* but libzt isn't an OS so we keep this old convention */
+		public static bool SupportsIPv6 { get { return true; } }
+
+		public EndPoint RemoteEndPoint { get { return _remoteEndPoint; } }
+
+		public EndPoint LocalEndPoint { get { return _localEndPoint; } }
+
 		/* Structures and functions used internally to communicate with
 		lower-level C API defined in include/ZeroTierSockets.h */

@@ -587,5 +663,12 @@ namespace ZeroTier
 			public short events;
 			public short revents;
 		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		struct zts_timeval
+		{
+			public long tv_sec;
+			public long tv_usec;
+		}
 	}
 }
--- a/src/bindings/csharp/SocketException.cs
+++ b/src/bindings/csharp/SocketException.cs
@@ -13,7 +13,7 @@

 using System;

-namespace ZeroTier
+namespace ZeroTier.Sockets
 {
 	/// <summary>Exception class for ZeroTier service and low-level socket errors</summary>
 	public class SocketException : Exception
--- a/src/bindings/csharp/zt_wrap.cxx
+++ b/src/bindings/csharp/zt_wrap.cxx
@@ -587,7 +587,7 @@ SWIGEXPORT void SWIGSTDCALL CSharp_zts_delay_ms(long jarg1) {
  zts_delay_ms(arg1);
 }

-
+/*
 SWIGEXPORT int SWIGSTDCALL CSharp_zts_get_all_stats(void * jarg1) {
  int jresult ;
  zts_stats *arg1 = (zts_stats *) 0 ;
@@ -612,7 +612,7 @@ SWIGEXPORT int SWIGSTDCALL CSharp_zts_get_protocol_stats(int jarg1, void * jarg2
  jresult = result; 
  return jresult;
 }
-
+*/

 SWIGEXPORT int SWIGSTDCALL CSharp_zts_socket(int jarg1, int jarg2, int jarg3) {
  int jresult ;