Catch wrapped SocketExceptions when SslStream.Write is being used.

Author: Dusty Kline

src/ServiceStack.Redis/RedisNativeClient_Utils.cs

@@ -412,6 +412,15 @@ public bool FlushSendBuffer()
                 }
                 ResetSendBuffer();
             }
+            catch (IOException ex)  // several stream commands wrap SocketException in IOException
+            {
+                var socketEx = ex.InnerException as SocketException;
+                if (socketEx == null)
+                    throw;
+
+                cmdBuffer.Clear();
+                return HandleSocketException(socketEx);
+            }
             catch (SocketException ex)
             {
                 cmdBuffer.Clear();