diff --git a/Parallel/IpcParallel/SocketBuffer/SocketRef.vb b/Parallel/IpcParallel/SocketBuffer/SocketRef.vb
index 6bf1153..3591754 100644
--- a/Parallel/IpcParallel/SocketBuffer/SocketRef.vb
+++ b/Parallel/IpcParallel/SocketBuffer/SocketRef.vb
@@ -1,48 +1,49 @@
 #Region "Microsoft.VisualBasic::11d09a76aa25b30fc9f2f80cf0f60145, Parallel\IpcParallel\SocketBuffer\SocketRef.vb"
 
-    ' Author:
-    ' 
-    '       asuka (amethyst.asuka@gcmodeller.org)
-    '       xie (genetics@smrucc.org)
-    '       xieguigang (xie.guigang@live.com)
-    ' 
-    ' Copyright (c) 2018 GPL3 Licensed
-    ' 
-    ' 
-    ' GNU GENERAL PUBLIC LICENSE (GPL3)
-    ' 
-    ' 
-    ' This program is free software: you can redistribute it and/or modify
-    ' it under the terms of the GNU General Public License as published by
-    ' the Free Software Foundation, either version 3 of the License, or
-    ' (at your option) any later version.
-    ' 
-    ' This program is distributed in the hope that it will be useful,
-    ' but WITHOUT ANY WARRANTY; without even the implied warranty of
-    ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    ' GNU General Public License for more details.
-    ' 
-    ' You should have received a copy of the GNU General Public License
-    ' along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-
-    ' /********************************************************************************/
-
-    ' Summaries:
-
-    '     Class SocketRef
-    ' 
-    '         Properties: address
-    ' 
-    '         Function: CreateReference, GetSocket, Open, ToString, WriteBuffer
-    ' 
-    ' 
-    ' /********************************************************************************/
+' Author:
+' 
+'       asuka (amethyst.asuka@gcmodeller.org)
+'       xie (genetics@smrucc.org)
+'       xieguigang (xie.guigang@live.com)
+' 
+' Copyright (c) 2018 GPL3 Licensed
+' 
+' 
+' GNU GENERAL PUBLIC LICENSE (GPL3)
+' 
+' 
+' This program is free software: you can redistribute it and/or modify
+' it under the terms of the GNU General Public License as published by
+' the Free Software Foundation, either version 3 of the License, or
+' (at your option) any later version.
+' 
+' This program is distributed in the hope that it will be useful,
+' but WITHOUT ANY WARRANTY; without even the implied warranty of
+' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+' GNU General Public License for more details.
+' 
+' You should have received a copy of the GNU General Public License
+' along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+
+' /********************************************************************************/
+
+' Summaries:
+
+'     Class SocketRef
+' 
+'         Properties: address
+' 
+'         Function: CreateReference, GetSocket, Open, ToString, WriteBuffer
+' 
+' 
+' /********************************************************************************/
 
 #End Region
 
 Imports System.IO
+Imports System.Runtime.CompilerServices
 Imports Microsoft.VisualBasic.MIME.application.json.BSON
 
 Namespace IpcStream
@@ -81,6 +82,7 @@ Namespace IpcStream
             End Using
         End Function
 
+        <MethodImpl(MethodImplOptions.AggressiveInlining)>
         Public Overrides Function ToString() As String
             Return address
         End Function
@@ -91,12 +93,19 @@ Namespace IpcStream
             End Using
         End Function
 
+        <MethodImpl(MethodImplOptions.AggressiveInlining)>
         Public Shared Function CreateReference() As SocketRef
             Return App.GetAppSysTempFile(".sock", App.PID.ToHexString, prefix:="Parallel")
         End Function
 
+        <MethodImpl(MethodImplOptions.AggressiveInlining)>
         Public Shared Widening Operator CType(ref As String) As SocketRef
             Return New SocketRef With {.address = ref}
         End Operator
+
+        <MethodImpl(MethodImplOptions.AggressiveInlining)>
+        Public Shared Narrowing Operator CType(socket As SocketRef) As String
+            Return socket.address
+        End Operator
     End Class
 End Namespace