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SFTP Server

Features | Detailed Description

The SFTP Server is a component from the Clever Internet Suite library.

It can accept client connections and allows you to upload and download files, as well as manage files and directories as specified in the document.

Available in .NET and VCL editions.


  • Multiple threads support
  • SSH 2.0 encryption - SFTP
  • Public-key authorization
  • In-memory file and directory structure - virtual file system
  • Manage files and folders on the disk
  • RSA server hostkeys
  • Anonymous and Read-Only access, user Authentication
  • Personal directory for each user

Customizing the user and thread performance settings

Currently, this feature is available in VCL and ActiveX editions only.

With the SFTP Server you can specify the number of requests to the server, which can work concurrently.

You can queue as many server requests as the system memory allows. If there are more requests than the server threads, the additional requests remain queued until the server threads become available.

Idle threads are maintained by the server in order to reduce the time required to satisfy requests for server threads.

Customizing the encryption and integrity algorithms

Using the SFtpServer.Config property, you can specify the SSH algorithms, which will be used to exchange keys, encrypt, decrypt, and other operations.

Event Notifications to control every aspect of client's connection

The SFTP Server component provides an advanced set of events for directory listing, file downloading and uploading, directory changing and other operations.

All these events allow you to work with files and directories in-memory without having to use the file system structure on the disk.

Using the SFtpFileHandler component, you can automatically handle all these events and allow the server to manage files on the disk.

Samples, including WinForm clients with full source code

Please see the Demos code (SFtpServer) and also the indexed Help documentation provided with the Clever Internet Suite installation to learn more about using this component in your application.

Includes support for Delphi, C++Builder, C#, and VB.NET.

Complete Delphi source code

When Purchasing the Clever Internet Suite you receive the full sources for all suite components and also free unlimited support.


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