disable socket.IOControl(SIO_UDP_CONNECT) on unix but not windows

Lidgren.Network.userprefs

@@ -1,24 +1,22 @@
 <Properties StartupConfiguration="{6691874A-1766-4A08-A72A-B1132FAB8E58}|Default">
-  <MonoDevelop.Ide.Workbench ActiveDocument="Lidgren.Network/NetQueue.cs">
+  <MonoDevelop.Ide.Workbench ActiveDocument="Lidgren.Network/NetPeer.Internal.cs">
     <Files>
-      <File FileName="UnitTests/Program.cs" Line="15" Column="1" />
+      <File FileName="UnitTests/Program.cs" Line="12" Column="1" />
       <File FileName="Lidgren.Network/NetNatIntroduction.cs" Line="12" Column="27" />
-      <File FileName="Lidgren.Network/NetPeer.cs" Line="120" Column="1" />
-      <File FileName="Lidgren.Network/NetPeer.Internal.cs" Line="27" Column="1" />
+      <File FileName="Lidgren.Network/NetPeer.Internal.cs" Line="138" Column="37" />
       <File FileName="Lidgren.Network/NetPeerConfiguration.cs" Line="130" Column="1" />
       <File FileName="Lidgren.Network/NetPeer.LatencySimulation.cs" Line="38" Column="1" />
       <File FileName="Lidgren.Network/NetPeerStatistics.cs" Line="53" Column="1" />
-      <File FileName="Lidgren.Network/NetQueue.cs" Line="86" Column="1" />
+      <File FileName="Lidgren.Network/NetQueue.cs" Line="89" Column="1" />
     </Files>
   </MonoDevelop.Ide.Workbench>
   <MonoDevelop.Ide.Workspace ActiveConfiguration="Debug" />
   <MonoDevelop.Ide.DebuggingService.Breakpoints>
-    <BreakpointStore>
-      <Breakpoint file="/Users/user/lidgren-network-gen3/UnitTests/Program.cs" relfile="UnitTests/Program.cs" line="12" column="4" />
-      <Breakpoint file="/Users/user/lidgren-network-gen3/Lidgren.Network/NetPeer.Internal.cs" relfile="Lidgren.Network/NetPeer.Internal.cs" line="111" column="1" />
-    </BreakpointStore>
+    <BreakpointStore />
   </MonoDevelop.Ide.DebuggingService.Breakpoints>
-  <MonoDevelop.Ide.DebuggingService.PinnedWatches />
+  <MonoDevelop.Ide.DebuggingService.PinnedWatches>
+    <Watch file="Lidgren.Network/NetPeer.Internal.cs" line="136" offsetX="581" offsetY="2025" expression="Environment.OSVersion.Platform" liveUpdate="False" />
+  </MonoDevelop.Ide.DebuggingService.PinnedWatches>
   <MultiItemStartupConfigurations />
   <MonoDevelop.Ide.ItemProperties.UnitTests PreferredExecutionTarget="MonoDevelop.Default" />
 </Properties>

Lidgren.Network/Lidgren.Network.csproj

@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE;__CONSTRAINED__</DefineConstants>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>

Lidgren.Network/NetPeer.Internal.cs

@@ -4,12 +4,12 @@ using System.Threading;
 using System.Diagnostics;
 using System.Security.Cryptography;
 using System.Net.Sockets;
-using System.Collections.Generic;
-
+using System.Collections.Generic;
+
 #if !__NOIPENDPOINT__
-using NetEndPoint = System.Net.IPEndPoint;
+using NetEndPoint = System.Net.IPEndPoint;
 #endif
-
+
 namespace Lidgren.Network
 {
 	public partial class NetPeer
@@ -39,13 +39,13 @@ namespace Lidgren.Network
 		internal bool m_executeFlushSendQueue;
 
 		private AutoResetEvent m_messageReceivedEvent;
-		private List<NetTuple<SynchronizationContext, SendOrPostCallback>> m_receiveCallbacks;
-
+		private List<NetTuple<SynchronizationContext, SendOrPostCallback>> m_receiveCallbacks;
+
 		/// <summary>
 		/// Gets the socket, if Start() has been called
 		/// </summary>
-		public Socket Socket { get { return m_socket; } }
-
+		public Socket Socket { get { return m_socket; } }
+
 		/// <summary>
 		/// Call this to register a callback for when a new message arrives
 		/// </summary>
@@ -58,18 +58,18 @@ namespace Lidgren.Network
 			if (m_receiveCallbacks == null)
 				m_receiveCallbacks = new List<NetTuple<SynchronizationContext, SendOrPostCallback>>();
 			m_receiveCallbacks.Add(new NetTuple<SynchronizationContext, SendOrPostCallback>(syncContext, callback));
-		}
-
+		}
+
 		/// <summary>
 		/// Call this to unregister a callback, but remember to do it in the same synchronization context!
 		/// </summary>
 		public void UnregisterReceivedCallback(SendOrPostCallback callback)
 		{
 			if (m_receiveCallbacks == null)
-				return;
-
-			// remove all callbacks regardless of sync context
-            m_receiveCallbacks.RemoveAll(tuple => tuple.Item2.Equals(callback));
+				return;
+
+			// remove all callbacks regardless of sync context
+			m_receiveCallbacks.RemoveAll(tuple => tuple.Item2.Equals(callback));
 
 			if (m_receiveCallbacks.Count < 1)
 				m_receiveCallbacks = null;
@@ -112,7 +112,7 @@ namespace Lidgren.Network
 			if (now - m_lastSocketBind < 1.0)
 			{
 				LogDebug("Suppressed socket rebind; last bound " + (now - m_lastSocketBind) + " seconds ago");
-				return; // only allow rebind once every second
+				return; // only allow rebind once every second
 			}
 			m_lastSocketBind = now;
 
@@ -127,17 +127,23 @@ namespace Lidgren.Network
 			m_socket.Blocking = false;
 
 			var ep = (EndPoint)new NetEndPoint(m_configuration.LocalAddress, reBind ? m_listenPort : m_configuration.Port);
-			m_socket.Bind(ep);
-
+			m_socket.Bind(ep);
+
+			// try catch only works on linux not osx
 			try
-			{
-				//const uint IOC_IN = 0x80000000;
-				//const uint IOC_VENDOR = 0x18000000;
-				//uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
-				//m_socket.IOControl((int)SIO_UDP_CONNRESET, new byte[] { Convert.ToByte(false) }, null);
+			{
+				// this is not supported in mono / mac or linux yet.
+				if(Environment.OSVersion.Platform != PlatformID.Unix)
+				{
+					const uint IOC_IN = 0x80000000;
+					const uint IOC_VENDOR = 0x18000000;
+					uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
+					m_socket.IOControl((int)SIO_UDP_CONNRESET, new byte[] { Convert.ToByte(false) }, null);
+				}
 			}
-			catch
+			catch (System.Exception e)
 			{
+				// this will be thrown on linux but not mac if it doesn't exist.
 				// ignore; SIO_UDP_CONNRESET not supported on this platform
 			}
 

UnitTests/UnitTests.csproj

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>