Added code to prevent multiple connection approval messages from being spawned and more sending serverfull when connections + pending connections exceed maxconnections

Lidgren.Network/NetPeer.Internal.cs

@@ -519,12 +519,32 @@ namespace Lidgren.Network
 					}
 
 					// ok, someone wants to connect to us, and we're accepting connections!
-					if (m_connections.Count >= m_configuration.MaximumConnections)
+					int reservedSlots = m_connections.Count;
+					if (m_pendingConnections != null)
+						reservedSlots += m_pendingConnections.Count;
+					if (reservedSlots >= m_configuration.MaximumConnections)
 					{
 						HandleServerFull(senderEndpoint);
 						break;
 					}
 
+					bool isAlreadyPending = false;
+					if (m_pendingConnections != null)
+					{
+						// check so we don't already have a pending connection to this endpoint
+						foreach (NetConnection conn in m_pendingConnections)
+						{
+							if (conn.RemoteEndpoint.Equals(senderEndpoint))
+							{
+								// Yes, we do.
+								isAlreadyPending = true;
+								break;
+							}
+						}
+					}
+
+					if (!isAlreadyPending)
+					{
 						NetConnection conn = new NetConnection(this, senderEndpoint);
 						conn.m_connectionInitiator = false;
 						conn.m_connectInitationTime = NetTime.Now;
@@ -538,6 +558,7 @@ namespace Lidgren.Network
 						}
 
 						AcceptConnection(conn);
+					}
 					break;
 				default:
 					LogWarning("Received unconnected library message of type " + libType);