diff --git a/Renci.SshClient/Renci.SshNet.NET35/Renci.SshNet.NET35.csproj b/Renci.SshClient/Renci.SshNet.NET35/Renci.SshNet.NET35.csproj
index 16ccc98c..967780ab 100644
--- a/Renci.SshClient/Renci.SshNet.NET35/Renci.SshNet.NET35.csproj
+++ b/Renci.SshClient/Renci.SshNet.NET35/Renci.SshNet.NET35.csproj
@@ -634,6 +634,9 @@
     <Compile Include="..\Renci.SshNet\SftpClient.cs">
       <Link>SftpClient.cs</Link>
     </Compile>
+    <Compile Include="..\Renci.SshNet\SftpClient.NET.cs">
+      <Link>SftpClient.NET.cs</Link>
+    </Compile>
     <Compile Include="..\Renci.SshNet\Sftp\Flags.cs">
       <Link>Sftp\Flags.cs</Link>
     </Compile>
diff --git a/Renci.SshClient/Renci.SshNet/Renci.SshNet.csproj b/Renci.SshClient/Renci.SshNet/Renci.SshNet.csproj
index 9c5b9a36..4ee65f28 100644
--- a/Renci.SshClient/Renci.SshNet/Renci.SshNet.csproj
+++ b/Renci.SshClient/Renci.SshNet/Renci.SshNet.csproj
@@ -12,10 +12,6 @@
     <AssemblyName>Renci.SshNet</AssemblyName>
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <SccProjectName>SAK</SccProjectName>
-    <SccLocalPath>SAK</SccLocalPath>
-    <SccAuxPath>SAK</SccAuxPath>
-    <SccProvider>SAK</SccProvider>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -135,6 +131,7 @@
       <SubType>Code</SubType>
     </Compile>
     <Compile Include="ConnectionInfo.cs" />
+    <Compile Include="SftpClient.NET.cs" />
     <Compile Include="KeyboardInteractiveAuthenticationMethod.cs">
       <SubType>Code</SubType>
     </Compile>
diff --git a/Renci.SshClient/Renci.SshNet/Session.cs b/Renci.SshClient/Renci.SshNet/Session.cs
index 21daefa6..42aaf9d9 100644
--- a/Renci.SshClient/Renci.SshNet/Session.cs
+++ b/Renci.SshClient/Renci.SshNet/Session.cs
@@ -183,12 +183,7 @@ namespace Renci.SshNet
         {
             get
             {
-                return (!this._isDisconnecting
-                    && this._socket != null
-                    && this._socket.Connected
-                    && this._isAuthenticated
-                    && this._messageListenerCompleted != null);
-                    //&& !(this._socket.Poll(10, SelectMode.SelectRead));
+                return (!this._isDisconnecting && this._socket != null && this._socket.Connected && this._isAuthenticated && this._messageListenerCompleted != null) && !(this._socket.Poll(10, SelectMode.SelectRead));
             }
         }
 
diff --git a/Renci.SshClient/Renci.SshNet/Sftp/SftpSynchronizeDirectoriesAsyncResult.cs b/Renci.SshClient/Renci.SshNet/Sftp/SftpSynchronizeDirectoriesAsyncResult.cs
index 6450ee9c..a1ee9189 100644
--- a/Renci.SshClient/Renci.SshNet/Sftp/SftpSynchronizeDirectoriesAsyncResult.cs
+++ b/Renci.SshClient/Renci.SshNet/Sftp/SftpSynchronizeDirectoriesAsyncResult.cs
@@ -6,7 +6,10 @@ using Renci.SshNet.Common;
 using System.IO;
 
 namespace Renci.SshNet.Sftp
-{    
+{
+    /// <summary>
+    /// Encapsulates the results of an asynchronous directory synchronization operation.
+    /// </summary>
     public class SftpSynchronizeDirectoriesAsyncResult : AsyncResult<IEnumerable<FileInfo>>
     {
         /// <summary>
diff --git a/Renci.SshClient/Renci.SshNet/SftpClient.NET.cs b/Renci.SshClient/Renci.SshNet/SftpClient.NET.cs
new file mode 100644
index 00000000..82cac33e
--- /dev/null
+++ b/Renci.SshClient/Renci.SshNet/SftpClient.NET.cs
@@ -0,0 +1,153 @@
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.IO;
+using Renci.SshNet.Sftp;
+using System.Text;
+using Renci.SshNet.Common;
+using System.Globalization;
+using System.Threading;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Renci.SshNet
+{
+    /// <summary>
+    /// Implementation of the SSH File Transfer Protocol (SFTP) over SSH.
+    /// </summary>
+    public partial class SftpClient : BaseClient
+    {
+        #region SynchronizeDirectories
+
+        public IEnumerable<FileInfo> SynchronizeDirectories(string sourcePath, string destinationPath, string searchPattern)
+        {
+            return InternalSynchronizeDirectories(sourcePath, destinationPath, searchPattern, null);
+        }
+
+        public IAsyncResult BeginSynchronizeDirectories(string sourcePath, string destinationPath, string searchPattern, AsyncCallback asyncCallback, object state)
+        {
+            if (sourcePath == null)
+                throw new ArgumentNullException("sourceDir");
+            if (destinationPath.IsNullOrWhiteSpace())
+                throw new ArgumentException("destDir");
+
+            //  Ensure that connection is established.
+            this.EnsureConnection();
+
+            var asyncResult = new SftpSynchronizeDirectoriesAsyncResult(asyncCallback, state);
+
+            this.ExecuteThread(() =>
+            {
+                try
+                {
+                    var result = this.InternalSynchronizeDirectories(sourcePath, destinationPath, searchPattern, asyncResult);
+
+                    asyncResult.SetAsCompleted(result, false);
+                }
+                catch (Exception exp)
+                {
+                    asyncResult.SetAsCompleted(exp, false);
+                }
+            });
+
+            return asyncResult;
+        }
+
+        public IEnumerable<FileInfo> EndSynchronizeDirectories(IAsyncResult asyncResult)
+        {
+            var ar = asyncResult as SftpSynchronizeDirectoriesAsyncResult;
+
+            if (ar == null || ar.EndInvokeCalled)
+                throw new ArgumentException("Either the IAsyncResult object did not come from the corresponding async method on this type, or EndExecute was called multiple times with the same IAsyncResult.");
+
+            // Wait for operation to complete, then return result or throw exception
+            return ar.EndInvoke();
+        }
+
+        private IEnumerable<FileInfo> InternalSynchronizeDirectories(string sourcePath, string destinationPath, string searchPattern, SftpSynchronizeDirectoriesAsyncResult asynchResult)
+        {
+            if (destinationPath.IsNullOrWhiteSpace())
+                throw new ArgumentException("destinationPath");
+
+            if (!Directory.Exists(sourcePath))
+                throw new FileNotFoundException(string.Format("Source directory not found: {0}", sourcePath));
+
+            IList<FileInfo> uploadedFiles = new List<FileInfo>();
+
+            DirectoryInfo sourceDirectory = new DirectoryInfo(sourcePath);
+
+#if SILVERLIGHT
+            var sourceFiles = sourceDirectory.EnumerateFiles(searchPattern);
+#else
+            var sourceFiles = sourceDirectory.GetFiles(searchPattern);
+#endif
+
+            if (sourceFiles == null || sourceFiles.Count() <= 0)
+                return uploadedFiles;
+
+            try
+            {
+                #region Existing Files at The Destination
+
+                var destFiles = InternalListDirectory(destinationPath, null);
+                Dictionary<string, SftpFile> destDict = new Dictionary<string, SftpFile>();
+                foreach (var destFile in destFiles)
+                {
+                    if (destFile.IsDirectory)
+                        continue;
+                    destDict.Add(destFile.Name, destFile);
+                }
+
+                #endregion
+
+                #region Upload the difference
+
+                bool isDifferent = false;
+                Flags uploadFlag = Flags.Write | Flags.Truncate | Flags.CreateNewOrOpen;
+                foreach (var localFile in sourceFiles)
+                {
+                    isDifferent = !destDict.ContainsKey(localFile.Name);
+
+                    if (!isDifferent)
+                    {
+                        SftpFile temp = destDict[localFile.Name];
+                        //  TODO:   Use md5 to detect a difference
+                        //ltang: File exists at the destination => Using filesize to detect the difference
+                        isDifferent = localFile.Length != temp.Length;
+                    }
+
+                    if (isDifferent)
+                    {
+                        var remoteFileName = string.Format(CultureInfo.InvariantCulture, @"{0}/{1}", destinationPath, localFile.Name);
+                        try
+                        {
+                            using (var file = File.OpenRead(localFile.FullName))
+                            {
+                                this.InternalUploadFile(file, remoteFileName, null, uploadFlag);
+                            }
+
+                            uploadedFiles.Add(localFile);
+
+                            if (asynchResult != null)
+                            {
+                                asynchResult.Update(uploadedFiles.Count);
+                            }
+                        }
+                        catch (Exception ex)
+                        {
+                            throw new Exception(string.Format("Failed to upload {0} to {1}", localFile.FullName, remoteFileName), ex);
+                        }
+                    }
+                }
+
+                #endregion
+            }
+            catch
+            {
+                throw;
+            }
+            return uploadedFiles;
+        }
+
+        #endregion
+    }
+}
diff --git a/Renci.SshClient/Renci.SshNet/SftpClient.cs b/Renci.SshClient/Renci.SshNet/SftpClient.cs
index 1a534627..511612e4 100644
--- a/Renci.SshClient/Renci.SshNet/SftpClient.cs
+++ b/Renci.SshClient/Renci.SshNet/SftpClient.cs
@@ -346,141 +346,6 @@ namespace Renci.SshNet
             return ar.EndInvoke();
         }
 
-
-        #region SynchronizeDirectories
-#if (!WINDOWS_PHONE)
-        public IEnumerable<FileInfo> SynchronizeDirectories(string sourceDir
-            , string destDir
-            , string searchPattern)
-        {
-            return InternalSynchronizeDirectories(sourceDir, destDir, searchPattern, null);
-        }
-
-        public IAsyncResult BeginSynchronizeDirectories(string sourceDir
-            , string destDir
-            , string searchPattern, AsyncCallback asyncCallback, object state)
-        {
-            if (sourceDir == null)
-                throw new ArgumentNullException("sourceDir");
-            if (destDir.IsNullOrWhiteSpace())
-                throw new ArgumentException("destDir");
-
-            //  Ensure that connection is established.
-            this.EnsureConnection();
-
-            var asyncResult = new SftpSynchronizeDirectoriesAsyncResult(asyncCallback, state);
-
-            this.ExecuteThread(() =>
-            {
-                try
-                {
-                    var result = this.InternalSynchronizeDirectories(sourceDir, destDir, searchPattern, asyncResult);
-
-                    asyncResult.SetAsCompleted(result, false);
-                }
-                catch (Exception exp)
-                {
-                    asyncResult.SetAsCompleted(exp, false);
-                }
-            });
-
-            return asyncResult;
-        }
-
-        public IEnumerable<FileInfo> EndSynchronizeDirectories(IAsyncResult asyncResult)
-        {
-            var ar = asyncResult as SftpSynchronizeDirectoriesAsyncResult;
-
-            if (ar == null || ar.EndInvokeCalled)
-                throw new ArgumentException("Either the IAsyncResult object did not come from the corresponding async method on this type, or EndExecute was called multiple times with the same IAsyncResult.");
-
-            // Wait for operation to complete, then return result or throw exception
-            return ar.EndInvoke();
-        }
-
-        private IEnumerable<FileInfo> InternalSynchronizeDirectories(string sourceDir,
-            string destDir,
-            string searchPattern,
-            SftpSynchronizeDirectoriesAsyncResult asynchResult)
-        {
-            if (destDir.IsNullOrWhiteSpace())
-                throw new ArgumentException("destDir");
-            if (!Directory.Exists(sourceDir))
-                throw new FileNotFoundException(string.Format("Source directory not found: {0}", sourceDir));
-
-            IList<FileInfo> uploadedFiles = new List<FileInfo>();
-
-            DirectoryInfo source = new DirectoryInfo(sourceDir);
-
-#if (SILVERLIGHT)
-            var sourceFiles = source.EnumerateFiles(searchPattern);
-#else
-            var sourceFiles = source.GetFiles(searchPattern);
-#endif
-            if (sourceFiles == null || sourceFiles.Count() <= 0)
-                return uploadedFiles;
-
-            try
-            {
-                #region Existing Files at The Destination
-                var destFiles = InternalListDirectory(destDir, null);
-                Dictionary<string, SftpFile> destDict = new Dictionary<string, SftpFile>();
-                foreach (var destFile in destFiles)
-                {
-                    if (destFile.IsDirectory)
-                        continue;
-                    destDict.Add(destFile.Name, destFile);
-                }
-                #endregion
-
-                #region Upload the difference
-                string remoteFileName;
-                bool isDifferent = false;
-                Flags uploadFlag = Flags.Write | Flags.Truncate | Flags.CreateNewOrOpen;
-                foreach (var localFile in sourceFiles)
-                {
-                    isDifferent = !destDict.ContainsKey(localFile.Name);
-                    if (!isDifferent)
-                    {
-                        SftpFile temp = destDict[localFile.Name];
-                        //ltang: File exists at the destination => Using filesize to detect the difference
-                        isDifferent = localFile.Length != temp.Length;
-                    }
-
-                    if (isDifferent)
-                    {
-                        remoteFileName = string.Format(CultureInfo.InvariantCulture, @"{0}/{1}", destDir, localFile.Name);
-                        try
-                        {
-                            using (var file = File.OpenRead(localFile.FullName))
-                            {
-                                InternalUploadFile(file, remoteFileName, null, uploadFlag);
-                            }
-                            uploadedFiles.Add(localFile);
-
-                            if (asynchResult != null)
-                            {
-                                asynchResult.Update(uploadedFiles.Count);
-                            }
-                        }
-                        catch (Exception ex)
-                        {
-                            throw new Exception(string.Format("Failed to upload {0} to {1}", localFile.FullName, remoteFileName), ex);
-                        }
-                    }
-                }
-                #endregion
-            }
-            catch
-            {
-                throw;
-            }
-            return uploadedFiles;
-        }
-#endif        
-        #endregion
-
-
         /// <summary>
         /// Gets reference to remote file or directory.
         /// </summary>
@@ -1415,7 +1280,7 @@ namespace Renci.SshNet
                 if (bytesRead < this.BufferSize)
                 {
                     var data = new byte[bytesRead];
-                    Buffer.BlockCopy(buffer, 0, data, 0, bytesRead); 
+                    Buffer.BlockCopy(buffer, 0, data, 0, bytesRead);
                     using (var wait = new AutoResetEvent(false))
                     {
                         this._sftpSession.RequestWrite(handle, offset, data, wait);