Describe purpose of SocketFactory

Author: Emile Joubert

projects/client/RabbitMQ.Client/src/client/api/ConnectionFactory.cs

@@ -198,6 +198,7 @@ public String Uri
 
         public delegate TcpClient ObtainSocket(AddressFamily addressFamily);
 
+        ///<summary>Set custom socket options by providing a SocketFactory</summary>
         public ObtainSocket SocketFactory = DefaultSocketFactory;
 
         ///<summary>Construct a fresh instance, with all fields set to