More .NET components

Release notes for File Transfer Pack

2017-02-08 Version 2017 R1 #
(build number 6249)

Support for the new OpenSSH key format

Our SSH based components can now save private keys using the new OpenSSH key format (Base64-encoded keys with "BEGIN OPENSSH PRIVATE KEY" header).

TLS Renegotiation Indication Extension

Renegotiation Indication Extension (RFC 5746) fixes a vulnerability in the TLS/SSL protocol that makes it possible for an attacker to hijact TLS/SSL connections during renegotiation in some scenarios.

Complete list of changes of version 2017 R1

  • SFTP: Enlarged default transfer queue lengths.
  • SCP: Fixed ScpTransferProgressEventArgs.Id property.
  • File Server: Added FileServer.Settings.ReceiveBufferSize and SendBufferSize properties.
  • File Server: Fixed handling of several control characters in virtual shell.
  • Networking: Added workaround for broken NetworkSessionException.Data on recent Xamarin.iOS.
  • Networking: TlsSocket.Timeout modifies the underlying ISocket.Timeout as well now.
  • Networking: Slightly enhanced certificate rejection reason reporting in TLS.
  • Proxy: Enhanced ProxySocket connection initialization.
  • SSH: Added support for saving private keys in new OpenSSH key format (Base64-encoded keys with "BEGIN OPENSSH PRIVATE KEY" header).
  • SSH: Added support for "rsa-sha2-256" and "rsa-sha2-512" host key algorithms.
  • SSH: Added support for "diffie-hellman-group14-sha256", "diffie-hellman-group15-sha512" and "diffie-hellman-group16-sha512" key exchange algorithms.
  • SSL: Added support for Renegotiation Indication Extension (RFC 5746).
  • SSL: Preferred TLS/SSL ciphers can be now defined (using TlsParameters.SetPreferredSuites method).
  • SSL: Added check for private key accessibility when starting server-side TLS.
  • Cryptography: Added support for ValidationOptions.UseCacheOnly on .NET CF.
  • Cryptography: Substantially optimized CRL parsing code used by enhanced certificate validator on .NET Compact Framework.

2016-12-19 Version 2016 R3 #
(build number 6198)

Elliptic curve cryptography in TLS/SSL

All Rebex components utilizing our TLS/SSL library now support the following TLS ciphers based on Elliptic Curve Diffie-Hellman (ECDH) algorithm:

  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  • TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
  • TLS_ECDHE_RSA_WITH_RC4_128_SHA

Supported curves:

  • NIST P-256
  • NIST P-384
  • NIST P-521
  • Brainpool P256 R1
  • Brainpool P384 R1
  • Brainpool P512 R1
  • Curve 25519

Please note that external plugins might be needed for some of those algorithms or curves on some platforms.

Elliptic curve cryptography in SSH

All Rebex components utilizing our SSH library now support SSH key exchange algorithms based on Elliptic Curve Diffie-Hellman (ECDH) algorithm and SSH host key algorithms based on Elliptic Curve DSA (ECDSA) and Edwards-curve DSA (EdDSA) algorithms:

  • ecdh-sha2-nistp256
  • ecdh-sha2-nistp384
  • ecdh-sha2-nistp521
  • curve25519-sha256@libssh.org
  • ecdsa-sha2-nistp256
  • ecdsa-sha2-nistp384
  • ecdsa-sha2-nistp521
  • ssh-ed25519

Please note that external plugins might be needed for some of those algorithms or curves on some platforms.

Enhanced SHA-2 certificate validation on all .NET Compact Framework platforms

We still support .NET Compact Framework 2.0, 3.5 and 3.9 and Windows CE 5.0 and higher. Unfortunately, legacy versions of Windows CE won't get native support for X509 certificates signed using SHA-2 algorithms, which essentially makes the native certifiacte validator useless - it only supports SHA-1, which is getting deprecated.

As a workaround to this platform limitation, we introduce a new built-in certificate validator. It handles SHA-2 and is used by default on .NET Compact Framework platforms that lack native SHA-2 support.

Proper certificate validation on Universal Windows Platform

Support for Universal Windows Platform is still experimental, but it just got much better. We now support the platform's native certificate validation provided by Windows.Security.Cryptography.Certificates namespace. There is now no need to implement custom validators in your Windows 10 Store applications.

New OpenSSH key format support

SshPrivateKey and PrivateKeyInfo objects can read server and client keys utilizing the new OpenSSH key format (Base64-encoded keys with "BEGIN OPENSSH PRIVATE KEY" header). This format is usually used to store ED25519 or ECDSA keys.

Remote checksum calculation

Ftp, Sftp and FileTransferClient objects now feature GetChecksum methods, making it possible to retrieve a checksum or hash of a remote file (or part of it). Together with the new LocalItem.GetChecksum method, this makes it easily possible to reliably detect changed files.

Please note that this functionality is not supported by all servers (for SFTP, "file-check" extension support is required). Ftp.GetRemoteChecksum methods are now considered deprecated.

Fine-tuning enabled ciphers in SSH

Previously, SshParameters only made it possible to enable/disable groups of ciphers. Now, it's possible to fine-tune the list of supported algorithms, including their preferred order (client-side only) using SetKeyExchangeAlgorithms, SetHostKeyAlgorithms, SetEncryptionAlgorithms and SetMacAlgorithms methods. Please note that KeyExchangeAlgorithms, HostKeyAlgorithms, EncryptionAlgorithms and MacAlgorithms properties still apply - a cipher is only used when it is enabled by both the method and property.

Disabled weak legacy ciphers in TLS/SSL

All legacy 'EXPORT1024' ciphers are now prohibited by default in addition to already-prohibited 'EXPORT' ciphers. SslAllowVulnerableSuites option can be used to enable them, but this is strongly discouraged.

Disabled weak algorithms in SSH

Several legacy ciphers are now disabled by default: diffie-hellman-group1-sha1, blowfish-ctr, blowfish-cbc, arcfour256, arcfour128, arcfour. Use SshParameters.KeyExchangeAlgorithms and SshParameters.EncryptionAlgorithms to enable them.

Weak RSA server host keys shorter than 1024 bits are now rejected by default. Use SshParameters.MinimumRsaKeySize property to specify a custom key size.

Complete list of changes of version 2016 R3

  • FTP: Added Ftp.GetChecksum methods to replace legacy Ftp.GetRemoteChecksum methods.
  • FTP: Added special handling for another variant of NOOP response during transfer.
  • SFTP: Added Sftp.GetChecksum methods (only for servers that support the "file-check" extension).
  • SFTP: Changed Sftp.GetStream in UWP edition to use .NET API instead of Windows Store API.
  • SFTP: ServerKey property added to Sftp/Scp objects, providing server public host key of the server.
  • File Server: Renamed FileServerUser constructor's physicalRootPath argument to virtualRootPath.
  • File Server: Added support for "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521" and "curve25519-sha256@libssh.org" key exchange algorithms (plugins needed to enable them).
  • File Server: Proper maximum packet size used when sending channel data (instead of hardcoded value).
  • File Server: Fixed rename operation that used to fail for directories located in the physical disk's root directory.
  • File Server: Fixed a bug that could cause timeout and session failure during SSH session renegotiation.
  • File Server: Added support for "ecdsa-sha2-nistp256", "ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521" and "ssh-ed25519" host key algorithms (plugins might be needed on some platforms).
  • File Server: Both RSA and DSA certificates can be used as host key at the same time.
  • Networking: Enhanced and optimized HTTP/HTTPS client core.
  • Networking: Connect/Listen methods on ProxySocket/TlsSocket objects now throw an exception when called twice on the same socket.
  • Networking: Added SocketInformation constructor.
  • SSH: Added support for "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521" and "curve25519-sha256@libssh.org" key exchange algorithms (plugins might be needed on some platforms).
  • SSH: SSH: Added support for saving keys in new OpenSSH key format (Base64-encoded keys with "BEGIN OPENSSH PRIVATE KEY" header).
  • SSH: Added SetKeyExchangeAlgorithms, SetHostKeyAlgorithms, SetMacAlgorithms methods to SshParameters object to make it possible to fine-tune the list of enabled SSH ciphers.
  • SSH: Legacy Diffie-Hellman group exchange is only used with legacy SSH servers.
  • SSH: Added SshSession.ServerInfo property to make it possible to determine ciphers supported by the SSH server.
  • SSH: Added SshPublicKey.KeySize property.
  • SSH: Added SshParameters.MinimumRsaKeySize property specifying to connect only to SSH servers with RSA server key of given size or higher.
  • SSH: Added support for "ecdsa-sha2-nistp256", "ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521" and "ssh-ed25519" host key algorithms (plugins might be needed on some platforms).
  • SSH: Disabled weak SSH ciphers by default (they can still be enabled explicitly).
  • SSH: Check availability of associated private key when adding a certificate-based server host key.
  • SSL: Added support for Elliptic-Curve based TLS ciphers (TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA) with NIST P-256/P-384/P-521, Curve 25519 and Brainpool P256R1/P384R1/P512R1 curves. Plugins are needed for some of those.
  • SSL: Server name is now passed to TLS server during negotiation (use TlsParameters.CommonName to override it).
  • SSL: Fixed TlsCipherSuite.All to include all recently added cipher suites.
  • SSL: All legacy 'EXPORT1024' ciphers are now prohibited by default in addition to already-prohibited 'EXPORT' ciphers (unless AllowVulnerableSuites option is enabled).
  • SSL: Fixed issues with some legacy TLS/SSL ciphers (all of them were already disabled by default).
  • SSL: Enhanced error reporting in server-side TLS/SSL library.
  • Cryptography: Improved ASN.1 time node parser.
  • Cryptography: Added support for certificate validation on Universal Windows Platform.
  • Cryptography: Added custom X509 certificate validator for .NET Compact Framework with full SHA-2 support on all platforms.
  • Cryptography: Fixed parsing of 'Intended Usage' extension when 'Decipher Only' was specified.
  • Cryptography: Added static Create method to SHA256Managed/SHA384Managed/SHA512Managed classes on .NET Compact Framework.
  • Cryptography: ValidationResult.ErrorCode deprecated and replaced with NativeErrorCode.
  • Cryptography: Optimized memory usage in CMS/PKCS #7 (SingedData/EnvelopedData classes).
  • Cryptography: Added missing argument checks to CertificateIssuer methods.
  • Cryptography: Added support for Base64-encoded files with CRLF end-of-line sequences to CertificateChain.LoadP7b method.
  • Cryptography: Fixed HMAC calculation based on SHA-384 and SHA-512 on NET Compact Framework and Mono platforms.
  • Cryptography: Added Rebex.Security.Certificates.CertificateEngine class to make it possible to implement custom X509 chain building and validation engines.
  • Core: Added ConsoleLogWriter for Xamarin platforms.
  • Core: Added Rebex.TeeLogWriter class that makes it possible to log to multiple log writers.
  • Core: Added LocalItem.GetChecksum methods and related types.

2016-08-26 Version 2016 R2.2 #
(build number 6083)

Maintenance release

This update brings several improvements, workarounds and bugfixes.

Complete list of changes of version 2016 R2.2

  • File Server: Fixed FileUploaded/FileDownloaded events that used to be wrongly called on session failure.
  • SSH: Enhanced handling of errors in FingerprintCheck event handlers.
  • SSL: Fixed a rare issue in abbreviated TLS/SSL negotiation handling.
  • Cryptography: Added CheckCertificate/GetIssuingDistributionPoint methods to CertificateRevocationList class and ValidateRevocationList method to Certificate class.
  • Cryptography: Added support for certificates with private keys stored in CNG Key Storage Providers.
  • Cryptography: Enhanced SHA-2 support check on .NET Compact Framework.
  • Cryptography: Fixed SHA-2 support in AsymmetricKeyAlgorithm.SignHash on Windows Server 2008 (and possibly other old platforms).
  • Core: Added workaround for broken FileStream.SetLength on some .NET Compact Framework platforms.

2016-07-28 Version 2016 R2.1 #
(build number 6054)

Workarounds for Microsoft Schannel bugs in TLS/SSL

Added workaround for bugs in Microsoft's TLS/SSL library which uses and expects wrong padding in DHE_RSA_* ciphers.

Fixed RSA-based session negotiation in File Server

In 2016 R2, File Server always attempted to use RSAManaged to create an RSA signature instead of using RSACryptoServiceProvider whenever possible.

Experimental support for Universal Windows Platform in File Server

Rebex File Server binaries for Universal Windows Platform are now available. Supported platforms include Windows 10, Windows 10 Mobile, Windows 10 IoT and possibly Xbox One. (Experimental binaries of other Rebex components - SFTP, FTP/SSL, Time, ZIP, File Transfer Pack, Terminal Emulation - have been available since 2016 R1.)

Complete list of changes of version 2016 R2.1

  • FTP: Fixed parsing of win32.ea extended attribute on .NET Compact Framework.
  • File Server: Added FileServer.Settings.ShowHiddenItems option that makes it possible to show file system items with 'hidden' flag from directory listings.
  • File Server: Added experimental File Server binaries for Universal Windows Platform.
  • File Server: Added support for extremely verbose incoming packet logging (log level 0).
  • File Server: Fixed handling of connection protocol packets received during renegotiation.
  • Networking: Fixed ProxySocket.ToEndPoint to throw a more meaningful exception for entries with no IP addresses.
  • SSL: Fixed unreadable TLS debug log messages on Xamarin platforms.
  • SSL: Added workarounds for bugs in Microsoft Schannel implementation of DHE_RSA_* ciphers related to incorrect padding processing.
  • Cryptography: Fixed AsymmetricKeyAlgorithm.SignHash (in 2016 R2, it falls back to RSAManaged without trying to use RSACryptoServiceProvider first).
  • Cryptography: Fixed CertificateIssuer.IssueRevocationList method that ignored signatureHashAlgorithm argument and always used SHA-1.
  • Core: FileLogWriter on Windows Store 8.x / Universal Windows Platform is now thread-safe.
  • Core: Fixed LocalItem(string) constructor on Windows Store 8.x / Universal Windows Platform.
  • Core: Added workaround for broken handling of surrogate pairs when converting to "iso-8859-1" using System.Text.Encoding on Mono 4.x.

2016-06-30 Version 2016 R2 #
(build number 6026)

Support for Xamarin June 2016 Update

June 2016 update of Xamarin.iOS/Xamarin.Android/Xamarin.Mac introduced a breaking change in Mono.Security API that broke compatibility with Rebex components. This issue has been solved in this release.

SHA-2 for all supported .NET Compact Framework platforms

SHA-1 is currently being deprecated (applies to X509 certificates, TLS/SSL and SSH), which poses a problem for legacy .NET Compact Framework platforms based on editions of Windows CE with no native SHA-2 support. To make solutions for these platforms compatible with current TLS/SSL and SSH serves, we added a custom implementation of SHA-2 for these legacy platforms.

Additional SSH host key algorithms

Support for 'x509v3-sign-dss', 'ssh-rsa-sha256@ssh.com' and 'x509v3-sign-rsa-sha256@ssh.com' host key algorithms has been added to SFTP, SCP, SSH and File Server components.

Complete list of changes of version 2016 R2

  • FTP: Enhanced IgnorePassiveModeAddress workaround to support SOCKS4/SOCKS5 and HTTP CONNECT proxies.
  • FTP: Added support for another variant of 200 NOOP response.
  • SFTP: Improved Disconnect method on .NET CF to make sure the connection is closed gracefully.
  • File Server: Enhanced error reporting when trying to delete non-empty directories.
  • File Server: Fixed data buffering in SFTP subsystem.
  • File Server: Ssh object now properly closes tunnel listeners when disposed.
  • File Server: Added MaxSessionTransferredBytes and MaxSessionDuration settings to specify when to trigger session renegotiation.
  • File Server: Added FileServer.Settings.UseLargeBuffers option.
  • File Server: Added support for additional server authentication algorithms ('x509v3-sign-dss', 'ssh-rsa-sha256@ssh.com' and 'x509v3-sign-rsa-sha256@ssh.com').
  • File Server: Fixed compatibility with Bitvise SSH Client related to text mode.
  • File Server: Fixed error handling in SSH tunnel starter.
  • File Server: Fixed possible NullReferenceException on connection failure.
  • File Server: Added ClientSoftwareIdentifier to PreAuthenticationEventArgs and AuthenticationEventArgs.
  • Networking: Increased default receive buffer size on Windows 8 and higher. Added related Proxy properties to make this configurable.
  • Proxy: ProxySocket object's Connect method now uses the timeout value specified by the Timeout property.
  • SSH: Added support for additional server authentication algorithms ('x509v3-sign-dss', 'ssh-rsa-sha256@ssh.com' and 'x509v3-sign-rsa-sha256@ssh.com').
  • SSH: Disabled hmac-sha96 SSH cipher in FIPS mode (it's not compliant).
  • SSH: Fixed error handling in queued background calls (mostly applies to session renegotiation).
  • SSH: Fixed renegotiation handling to allow renegotiation while authenticating.
  • SSH: Fixed DSA client certificate authentication.
  • SSH: Enhanced interactive authentication support to handle uppercase password prompts.
  • SSL: Enhanced SHA-2 support for .NET Compact Framework. SHA-256, SHA-384 and SHA-512 are now supported even on platforms with no native SHA-2 support.
  • SSL: Added Settings.SslSession property to allow resuming specific TLS/SSL sessions.
  • SSL: Fixed record layer 'protocol version' handling.
  • SSL: Enhanced Diffie-Hellman key exchange logging.
  • Cryptography: Fixed detection of native SHA-2 support in .NET Compact Framework version.
  • Cryptography: Added support for more variants of OpenSSL/OpenSSH (SSLeay) key files.
  • Cryptography: Fixed Certificate.Associate to work with DSA keys.
  • Cryptography: Added CrlNumber property to CertificateRevocationList object.
  • Cryptography: Added support for SHA-2 certificates to Certificate.VerifyHash in .NET 2.0 on Windows with FIPS-compliant mode enabled.
  • Cryptography: Certificate.LoadPfx and CertificateChain.LoadPfx methods now specify Exportable options by default (in addition to UserKeySet).
  • Cryptography: Added workaround for RSA implementations that reject rare signatures shorter than the key size.
  • Core: Enhanced SSPI error messages.
  • Core: Fixed LogWriterBase.Level default value.
  • Core: Fixed compatibility issue in Xamarin edition (caused by a breaking change in June 2016 update of Xamarin).

2016-02-10 Version 2016 R1.1 #
(build number 5885)

Experimental assemblies for Xamarin.Mac

Added experimental binaries of most Rebex components (FTP/SSL, SFTP, File Server, Secure Mail, ZIP, Time, Security) for Xamarin.Mac platforms. They are suitable for targeting Xamarin.Mac Mobile Framework and Xamarin.Mac .NET 4.5 Framework projects.

Mitigation of SLOTH attacks

Usage of legacy MD5 algorithm in TLS 1.2 was disabled to prevent SLOTH attacks.

Maintenance release

Experimental binaries of most Rebex components (FTP/SSL, SFTP, File Server, Secure Mail, ZIP, Time, Security) for the Xamarin.Mac platform are now available. They are suitable for targeting both Xamarin.Mac Mobile and Xamarin.Mac .NET 4.5 Framework projects.

Complete list of changes of version 2016 R1.1

  • FTP: Fixed a bug that triggered the 'Another operation is pending' exception when internal directory listing failed due to protocol error.
  • FTP: Added workaround for servers returning "cdir" in MLST responses.
  • SSH: Fixed seldom-used SshSession.Connect(string, int) method that was freezing since 2016 R1.
  • SSH: Added workaround for older version of Bitvise server that don't properly handle SSH channel closing.
  • SSH: Fixed handling of multi-line SSH banner messages.
  • SSH: Fixed a bug in SSH channel window size adjustment.
  • SSH: Fixed potential NullReferenceException error in SshSession.Dispose method.
  • SSL: Disabled any usage of MD5 in TLS 1.2 to prevent SLOTH attacks.

2016-01-11 Version 2016 R1 #
(build number 5855)

TLS 1.2 enhancements

TLS 1.2 is now enabled by default in all our TLS/SSL enabled components. We fixed several interoperability issues as well.

Experimental assemblies for Windows Store Apps

Experimental binaries of many Rebex components (SFTP, FTP/SSL, Time, ZIP, File Transfer Pack, Terminal Emulation) for "Windows 8 Store", "Windows 8.1 PCL", and "Windows Universal Platform" are now available. The are suitable for "Store Apps" targeting Windows 8.0, Windows 8.1, Windows Phone 8.1, Windows 10, Windows 10 Mobile and Windows 10 IoT. Visit Rebex Labs for additional information.

Mitigation of Logjam attacks

Check for minimum allowed Diffie-Hellman key size (1024 bits) has been added to SSH and TLS/SSL to mitigate Logjam attacks. The minimum value can be changes using Settings.SslMinimumDiffieHellmanKeySize or Settings.SshParameters.MinimumDiffieHellmanKeySize.

File upload/download events in File Server

Added FileUploaded and FileDownloaded events to make it easier to track uploads and downloads.

Server certificate authentication in SSH

Rebex SFTP, Terminal Emulation and File Server now support X509 certificate host key algorithm, making it possible to authenticate servers using a certificate instead of public key.

Complete list of changes of version 2016 R1

  • All: Added workaround for Xamarin.Android whose Dns.GetHostEntry resolves 'localhost' to device's external IP address.
  • All: Rebex assemblies are now signed with SHA-256 signatures in addition to legacy SHA-1 signatures.
  • FTP: Added workaround for broken MLSD command on CC-patched WU-FTPD server.
  • FTP: Added workaround for GlobalScape EFT Server 6.5-7.1 with broken OPTS MLST command.
  • FTP: TLS 1.2 is now enabled by default.
  • FTP: Improved port selection algorithm when using PortRange objects.
  • FTP: Added support for FileCatalyst FTP server listings.
  • FTP: Added Ftp.Settings.CompressionLevel property that specifies compression level for MODE Z uploads.
  • SFTP: Enhanced error message reported by ChangeDirectory when trying to change into a non-existing directory.
  • File Server: Added port forwarding (TCP tunneling) support.
  • File Server: Enhanced logging of handle-based file system operations (such as closing a file).
  • File Server: IsRunning property added to Server/FileServer objects.
  • File Server: Added FileUploaded/FileDownloaded events.
  • File Server: Starting a server with no bindings now triggers an error.
  • File Server: Fixed wrong session ID in SFTP error log entries.
  • File Server: Fixed handling of empty folders on Windows CE.
  • File Server: Fixed bad P/Invoke declaration (applies to Windows platforms).
  • File Server: Enhanced error reporting in SFTP and SCP and fixed several wrong error codes.
  • File Server: Fixed file delete operation that used to report success when deleting non-existent file on non-Windows platforms.
  • File Server: Fixed compatibility issues with libssh2.
  • File Server: Added proper data window size checks.
  • File Server: Added workaround for wrong error code reported by Windows CE when deleting non-existent file.
  • File Server: Added workaround for Open with Create+Read in .NET-based virtual file system.
  • File Server: Fixed Unbind method that occasionally triggered an error.
  • File Server: Added FileServerProtocol.Shell (replaces FileServerProtocol.Scp). Makes it possible to choose between SCP shell and empty shell when constructing a user object.
  • File Server: Enhanced error handling during initialization. Early closed connections no longer leave the server in an unusable state.
  • File Server: Added workaround for buggy (or malicious) clients that send incomplete disconnect requests.
  • File Server: Added logging of successful and failed authentication attempts.
  • File Server: Added workaround for Windows CE with missing Enhanced DSS and Diffie-Hellman Cryptographic Provider (managed and slow implementation of Diffie-Hellman is used in this case).
  • File Server: Fixed FileServer constructor (used to fail when default charset was multi-byte but not UTF-8).
  • File Server: Unified ShellCommandEventArgs.User and SshConsole.User types.
  • File Server: Added support for certificate-based server authentication (using 'x509v3-sign-rsa algorithm').
  • File Server: Enhanced key negotiation error logging.
  • File Server: Added workaround for Xamarin.Android where it was possible to open a non-existing directory.
  • Proxy: Fixed a bug in SOCKS4/SOCKS5 response reading code that triggered an infinite loop with buggy proxy servers.
  • Proxy: Enhanced DNS resolution error messages.
  • SSH: Enhanced interactive authentication support to make it possible to use AuthenticationRequest event to ask for username and password.
  • SSH: Enhanced rejected authentication logging and error reporting.
  • SSH: Added SshParameters.MinimumDiffieHellmanKeySize value (set to 1024 by default to mitigate Logjam attacks).
  • SSH: No exception is thrown when the server aborts connection instead of closing it (unless a packet is being received).
  • SSH: Enhanced 'no common algorithms' error message.
  • SSH: Refactored SSH core to handle multi-thread scenarios more efficiently.
  • SSH: Added certificate-based constructor to SshPublicKey class.
  • SSH: Added support for certificate-based server authentication (using 'x509v3-sign-rsa algorithm').
  • SSH: Fixed misleading error message when user interactive authentication attempt is rejected.
  • SSH: Added support for one additional 'keyboard-interactive' authentication prompt ('Password for [user@server]:').
  • SSH: Added Settings.PostponeChannelClose option to enable workaround for servers that send channel data or exit code after the channel has been closed.
  • SSH: Added EnableSignaturePadding option that forces signature padding (workaround for SSH servers that got signature padding wrong).
  • SSH: Added logging of debug messages received from SSH server.
  • SSL: TLS 1.2 made compatible with Microsoft's implementation.
  • SSL: Fixed client certificate authentication in TLS 1.2.
  • SSL: Added Settings.SslMinimumDiffieHellmanKeySize value (set to 1024 by default to mitigate Logjam attacks).
  • SSL: Added reliable detection of SHA-2 certificate support.
  • Cryptography: Enhanced cryptographic provider initialization error message.
  • Cryptography: Added workaround for PuTTY keys with bad data at the end.
  • Core: Fixed multi-file operations to never modify input FileSet's BasePath.
  • Core: ThreadPool is now used to handle background operations instead of a custom implementation.
  • Core: Enhanced multithread operation support in log writers.

2015-08-24 Version 2015 R4.1 #
(build number 5715)

Fixed Xamarin mobile platform detection

Fixed platform detection code on Xamarin.iOS and Xamarin.Android.

Complete list of changes of version 2015 R4.1

  • All: Fixed platform detection on Xamarin.Android and Xamarin.iOS.
  • All: Version and platform added to assembly description.

2015-08-09 Version 2015 R4 #
(build number 5700)

Support for Windows 10, .NET Framework 4.6 and Visual Studio 2015

All Rebex components now ship with full support for Windows 10, .NET Framework 4.6 and Microsoft Visual Studio 2015. Older Visual Studio versions (2005 and higher) and .NET Framework versions (2.0 and higher) are still supported as well.

Faster TLS/SSL and SSH negotiation on Xamarin.Android

Our SSH and TLS/SSL libraries now use Java-based Diffie-Hellman on Xamarin.Android, which substantially speeds up SSH and TLS/SSL negotiation when Diffie-Hellman algorithm is used.

File creation date support in FTP

Items returned by Ftp object's GetList and GetItems methods now provide creation time (if supported by the FTP server).

Complete list of changes of version 2015 R4

  • All: Enhanced platform detection code.
  • FTP: Added OPTS MLST support to enable non-default attributes.
  • FTP: Added link support to MLSD/MLST parsers.
  • FTP: Added FtpWebRequest.LogWriter property.
  • FTP: Default value of Ftp.Settings.ReuseControlConnectionSession changed to True to enhance compatibility.
  • FTP: Some legacy methods and properties now emit a warning when compiling.
  • SFTP: Fixed Sftp.AbortTransfer to support value type states.
  • SFTP: DownloadBufferSize, DownloadQueueLength, UploadBufferSize and UploadQueueLength added to Sftp.Settings.
  • SFTP: Added workaround for a bug in GlobalScape 7.1.x which sends erroneous empty data packets to the client.
  • SFTP: Fixed ObjectDisposedException that might have occured when an SSH channel has been closed in a certain way.
  • SCP: Fixed treatment of additional special characters in remote paths.
  • File Server: Added support for UNC paths.
  • File Server: Fixed issues with HMAC-SHA1 and HMAC-MD5 in FIPS-only mode.
  • File Server: Added support for message authentication algorithms based on SHA-2 on .NET Compact Framework (when supported natively).
  • File Server: Fixed handling of "empty" read requests (used to send back EOF instead of an empty block).
  • File Server: Enhanced subsystem shutdown process to prevent exception messages in the log.
  • File Server: LogLevel for SFTP filesystem errors lowered from Debug to Verbose.
  • SSH: Added support for message authentication algorithms based on SHA-2 on .NET Compact Framework (when supported natively).
  • SSH: Fixed NullReferenceException thrown by some SshSession properties (such as IsConnected) when not connected.
  • SSH: SHA-2 is now the preferred message authentication algorithm.
  • SSH: Added support for larger SSH packets.
  • SSL: Unified status handling in ValidatingCertificate events and ICertificateVerifier interface.
  • SSL: Enhanced TLS/SSL version mismatch handling.
  • Cryptography: Fixed final empty block handling in Twofish/Blowfish/ArcTwo TransformFinalBlock with PKCS #7 padding.
  • Cryptography: SSH and TLS/SSL now use Java-based Diffie-Hellman objects on Xamarin.Android platform to speed up negotiation.
  • Core: Fixed end-of-line sequences in LogWriterBase, optimized FileLogWriter.
  • Core: Added workaround for broken ASN.1 time values with the second part of "60".

2015-04-15 Version 2015 R3.1 #
(build number 5584)

File Server bugfixes

Two bugs have been fixed in Rebex File Server. One bug caused errors in WinSCP while uploading files over SFTP, another bug made it impossible to create files and directories whose names contained whitespaces when uploading over SCP.

Complete list of changes of version 2015 R3.1

  • File Server: Fixed SFTP file creation that was not compatible with WinSCP.
  • File Server: Fixed SSH packet names in verbose log.
  • File Server: Fixed handling of filenames with whitespaces in SCP.
  • File Server: Disabled legacy "arcfour" SSH cipher by default.
  • SSH: Disabled legacy "arcfour" SSH cipher by default.
  • SSH: Fixed a bug that caused an algorithm list set by Settings.SshParameters.SetEncryptionAlgorithms to be ignored in FIPS-compliant mode.

2015-04-08 Version 2015 R3 #
(build number 5577)

New component - Rebex File Server

Rebex File Server is an SFTP, SCP and SSH server library. It provides secure remote file system access over an SSH channel using the SFTP or SCP protocols and makes it simple create an SFTP server that can be used by Rebex SFTP or any third-party SFTP, SCP or SSH client. Supports .NET Framework, .NET Compact Framework, Mono, Xamarin.iOS and Xamarin.Android. Available as a standalone package or as a part of Rebex File Transfer Pack, Rebex SSH Pack or Rebex Total Pack.

Disabled RC4 in TLS/SSL

The security of RC4 symmetric encryption algorithm has been questionable for many years. Recently, researchers have been able to exploit RC4's invariance weakness vulnerability to retrieve about 64 bytes of encrypted information of a very small fraction of TLS/SSL connections that happen to use weak keys. Since RC4 is no longer believed to be secure, it has been disabled by default.

Complete list of changes of version 2015 R3

  • All: Fixed Version property of Ftp, Imap, Pop3, Scp, Sftp, Smtp and Ssh classes to return a proper version number. Changed Ftp.Version to a static propery to match the other objects.
  • FTP: Added a workaround for broken firewalls that send an invalid response of "27 Entering passive mode (...)" when initiating a data transfer.
  • SCP: Added missing Scp.Login(SshGssApiCredentials) method and related events.
  • File Server: Initial release.
  • SSH: Enhanced some authentication error messages.
  • SSL: Disabled ciphers based on RC4 to prevend Bar Mitzvah attack on TLS/SSL.
  • Cryptography: Enhanced weak signature algorithm detection during certificate validation on Xamarin.iOS.
  • Core: Connect methods no longer require FileIOPermission (used to determine the assembly version for a log).

2015-03-17 Version 2015 R2 #
(build number 5555)

Fix for FREAK vulnerability

This release fixes vulnerability to FREAK exploit. The vulnerable 512-bit legacy 'exportable' TLS/SSL ciphers have been disabled.

Support for TLS 1.2

Support for TLS 1.2 has been added, along with support for AES/SHA-256 cipher suites.

Complete list of changes of version 2015 R2

  • SCP: Fixed escaping of round brackets in remote paths.
  • SSL: Added support for TLS 1.2.
  • SSL: Added support for AES ciphers with SHA-256 checksums.
  • SSL: Disabled legacy 'exportable' ciphers (by default) to prevent FREAK security exploit.
  • Cryptography: Added support for SSLeay private keys with AES-256-CBC encryption.
  • Cryptography: Fixed broken HashSize property in SHA-2 CSP on .NET Compact Framework.

2015-02-02 Version 2015 R1 #
(build number 5512)

Support for Xamarin Unified API

Added support for the new Unified API. This includes unified 32-bit and 64-bit platform support and makes it simple to share code between iOS and Mac.

Complete list of changes of version 2015 R1

  • All: Added support for Xamarin.iOS unified API.
  • FTP: Compatibility enhancements in Ftp.FileExists and Ftp.GetInfo methods.
  • SFTP: Added Sftp.Settings.LogChecksums option that makes it easily possible to log checksums of uploaded files.
  • SFTP: Fixed listing of root-level wildcard paths.
  • SFTP: Added Sftp.CreateSymlink method.

2014-12-18 Version 2014 R3 #
(build number 5466)

Legacy SSL 3.0 disabled by default in TLS/SSL-enabled components.

TLS 1.1 is now used by default in TLS/SSL-enabled components. Legacy SSL 3.0 support is disabled by default because it is no longer considered secure. Its use is strongly discouraged after disclosure of POODLE Attack.

Maintenance release

This update brings several improvements, workarounds and bugfixes.

Complete list of changes of version 2014 R3

  • All: Added more overloads to asynchronous Connect and Login methods.
  • All: Removed legacy Connect methods and enumerations from Xamarin.iOS and Xamarin.Android version (should never have been there).
  • FileTransferClient: Enhanced FileTransferClient.Proxy object to make it possible to use a single proxy object for both FTP/SSL and SFTP protocols.
  • FileTransferClient: Added SetSocketFactory method to FileTransferClient.
  • FTP: Fixed improper logging of data received over FTP control connection.
  • FTP: Fixed a bug that caused Ftp.DataPortRange to be ignored.
  • FTP: Enhanced DataPortRange to better handle multiple Ftp objects with overlapping data port ranges.
  • FTP: Added workaround for WinFtp Server's incorrect MDTM response which does not contain the milliseconds delimiter.
  • FTP: Fixed MLST quoting workaround for the ProFTPD server. It is now only applied in 1.3.2x versions of ProFTPD server.
  • FTP: Added workaround for WinFTP's server broken MDTM command.
  • FTP: Made it possible to enabling wrong passive mode IP address workaround when using a proxy (if DNS resolution works locally).
  • SFTP: Added workaround for Axway's strangely-behaved SSH_FXP_OPENDIR command.
  • SFTP: Added workaround for WS_FTP's problematic SSH_FXP_REALPATH command.
  • SFTP: Enhanced SFTP client to work nicely with Rebex File Server.
  • SSH: Added workaround for wrong SSH_MSG_USERAUTH_PK_OK packet in Cisco SSH.
  • SSL: TLS 1.1 is now used by default in TLS/SSL-enabled components. Legacy SSL 3.0 support is disabled by default.
  • SSL: Added experimental support for AES and Twofish based anonymous ciphers.
  • Cryptography: Fixed SymmetricKeyAlgorithm.Padding for non-CBC modes.
  • Cryptography: Added support for base-64 encoded P7B certificate chains.
  • Cryptography: Changed padding of parameters exported by DSAManaged.ExportParameters to match DSACryptoServiceProvider.
  • Cryptography: Added AsymmetricKeyAlgorithm.PublicOnly property.
  • Cryptography: Added workaround for non-working HMACSHA256/384/512 on some FIPS-only systems.
  • Cryptography: Added CertificateExtension.EnhancedKeyUsage method Useful when constructing certificate requests using CertificateRequest object.
  • Cryptography: Fixed DiffieHellmanManaged.KeySize that sometimes reported shorter bit lengths.
  • Cryptography: Several new AsymmetricKeyAlgorithm-based methods added to Certificate and CertificationRequest.
  • Core: Added LocalItem.Attributes property.
  • Core: PKCS #12 key loading routines changed to not persist keys in Windows key storage by default.
  • Core: Added ConsoleLogWriter, a console-based log writer class.

2014-07-03 Version 2014 R2 #
(build number 5298)

Unified API for FTP, FTP/SSL and SFTP

We added a new FileTransferClient object that resembles the existing Ftp and Sftp objects, but supports multiple file transfer protocols - FTP, FTP/SSL and SFTP.

Complete list of changes of version 2014 R2

  • All: Eliminated "Unknown heap type" warnings in Mono.
  • FileTransferClient: Added FileTransferClient object. Supports FTP, FTP/SSL and SFTP protocols.
  • FTP: Multi-file operations only try to determine the current remote path if it is actually needed.
  • FTP: Added an option to force EPSV/EPRT commands.
  • SFTP: Added Sftp.Settings.DisableRealPathWorkaround option to disable workaround for WS_FTP SSH_FXP_REALPATH bug.
  • SFTP: Added workaround for SFTP servers that report duplicate extensions.
  • Networking: Enhanced logging of failed certificate validation errors.
  • Proxy: Fixed ProxySocket's Connect method behavior with disabled timeout.
  • SSL: Enhanced TlsVersion and TlsCipherSuite parameters checking.
  • SSL: Fixed alert names in TlsException messages.
  • Cryptography: Added Load, Save and Generate methods to PrivateKeyInfo and PublicKeyInfo classes.
  • Cryptography: Enhanced CertificationRequest class to support request generating in addition to parsing.
  • Cryptography: Fixed behavior with disabled UseFipsAlgorithmOnly on FIPS-only systems.

2014-02-26 Version 2014 R1 #
(build number 5171)

Maintenance release

This update brings several improvements, workarounds and bugfixes.

Complete list of changes of version 2014 R1

  • All: Various small low-level optimizations.
  • FTP: Added workaround for small chunks of data received while uploading.
  • SFTP: Added Sftp.Settings.TreatUnknownItemsAsFiles property (workaround for SFTP serves that return invalid item type values).
  • Networking: Added static NetworkSession.DefaultLogWriter property to make it easily possible to set a shared log writer for all Ftp/Sftp/Imap/Smtp/Pop3/Scp/Ssh/SshSession objects.
  • Proxy: Enhanced logging capabilities of ProxySocket class (Socket4/Socks5 proxies).
  • SSH: Added support for SHA-2 (SHA-256 and SHA-512) message authentication codes.
  • SSH: Enhanced CTR mode workaround for OpenSSH 4.x.
  • SSH: Fixed missing MAC algorithm ID in SshCipher.ToString().
  • SSH: Standard form of SSH_MSG_KEX_DH_GEX_REQUEST packets is used with recent OpenSSH servers instead of its legacy form.
  • SSL: Added new Certificate-based CertificateRequestHandler.CreateRequestHandler overloads.
  • Cryptography: Fixed a bug in MD5SHA1 signature validation on .NET Compact Framework.
  • Cryptography: Fixed AES CSP availability detection in FIPS-compliant mode.
  • Cryptography: Fixed sorting of PKCS #7 signature attributes.
  • Cryptography: Added support for AES-128-CBC SSLeay private keys.
  • Cryptography: Added workaround for certificates and keys in Base64-encoded format ending with a zero octet.
  • Core: Assemblies made more obfuscator-friendly.
  • Core: Fixed null value comparisons in FileSystemItemComparer.

2013-12-02 Version 2013 R3 #
(build number 5085)

Support for Xamarin.iOS and Xamarin.Android

Rebex components now support Xamarin.iOS and Xamarin.Android, making it possible to target iPad/iPhone and Android devices! (The only exception is the Terminal Emulation component whose TerminalControl object relies heavily on Windows Forms and is only available for Windows and Linux at the moment.)

Support for .NET Compact Framework 3.9

In addition to .NET CF 2.0 and 3.5, we now support .NET CF 3.9 as well. This makes it possible to target Windows Embedded Compact 2013, Microsoft's latest incarnation of Window CE.

Assemblies for every supported platform for all

With every purchase, you now get binaries for all supported platforms. Users with active support contract were upgraded for free. This will make it easy to embrace the new trends - we offer a single API that works with .NET, .NET Compact Framework, Mono, Xamarin.iOS and Xamarin.Android.

Support for Visual Studio 2013

All Rebex components now ship with full support for Microsoft Visual Studio 2013. Older Visual Studio versions (2005 and higher) and .NET Framework versions (2.0 and higher) are still supported as well.

Complete list of changes of version 2013 R3

  • All: Xamarin.iOS and Xamarin.Android officially supported in all components except Rebex Terminal Emulation.
  • All: .NET Compact Framework 3.9 officially supported.
  • All: Visual Studio 2013 officially supported.
  • FTP: Added FtpSetting.RecheckItemExistence option to verify remote item existence before using it.
  • FTP: Support for checksum-based file modification checking added to Upload and Download methods (ActionOnExistingFiles.ChecksumDiffers).
  • FTP: Added support for AS/400 to batch operations (uses NAMEFMT extension).
  • FTP: Ftp.GetInfo method now always returns .Path and .Name parsed from the input "path" argument (instead of parsing MLST output when available).
  • FTP: FtpBatchTransferException made obsolete (use FtpException instead).
  • FTP: Enhanced SSCN mode handling in server-to-server transfers (FXP), making it more compatible.
  • FTP: Fixing time checking in SetFileDateTimeSync (incorrectly used millisecond precision).
  • FTP: Asynchronous version of the GetRemoteChecksum method added.
  • FTP: Fixed assignment of default reaction in response to a problem encountered during Upload/Download methods.
  • SFTP: SftpBatchTransferException made obsolete (use SftpException instead).
  • SFTP: Fixed timeout handling in Sftp.Connect method.
  • SFTP: Added Sftp.Settings.DisablePathNormalization option.
  • SFTP: Added Sftp.Setting.RecheckItemExistence option to verify remote item existence before using it.
  • SFTP: Fixed assignment of default reaction in response to a problem encountered during Upload/Download methods.
  • SCP: Upload and Download methods added to Scp object to replace PutFiles and GetFiles methods.
  • Networking: On Windows 8 and 8.1, larger TCP receive buffer size is used by default. The default value caused low transfer speeds in many cases with FTP and SFTP.
  • Networking: Added IsAuthenticated and IsConnected properties to NetworkSession (Ftp, Sftp, Scp, Imap, Smtp, Pop3, Ssh and SshSession objects).
  • Proxy: Added support for digest authentication to HTTP CONNECT proxies.
  • Proxy: Fixed ProxySocket.BeginSend and BeginReceived methods which used to fail in some scenarios.
  • SSH: Added support for additional formats to SshPublicKey/SshPrivateKey object's SavePublicKey method and SshPublicKey constructor.
  • SSH: Enhanced error checking to report a more meaningful error instead of "Invalid decoder state" in case of some connection failures.
  • SSH: Enhanced GSSAPI/Kerberos support to be compatible with OpenSSH.
  • SSH: Added Kerberos ticket delegation support.
  • SSH: Added GSSAPI/Kerberos support to .NET CF version of SSH core.
  • Cryptography: Changed Certificate.FindCertificates method not to include subordinate CAs in the search by default.
  • Cryptography: Fixed CertificateStore.Exists on non-Windows platforms.
  • Cryptography: Added workaround for opening certificate stores in .NET CF that don't exist yet.
  • Cryptography: Added workaround for problem with DSA certificate in .PFX importing code on Windows Embedded Compact 2013.
  • Cryptography: Added .NET CF support for Certificate.Associate(privateKey, permanentBind)
  • Cryptography: Added Certificate.GetAuthorityKeyIdentifier() method.
  • Cryptography: Changed SignerInfo and SignerInfo objects to use NULL parameters for hash algorithms (in order to match RSACryptoServiceProvider behavior).
  • Core: Added FileLogWriter.Path to replace FileLogWriter.Filename.
  • Core: Added LocalItem.ComputeCrc32() method.
  • Core: Signed and encrypted message parsing made more compatible with broken messages.

2013-08-20 Version 2013 R2 #
(build number 4981)

Maintenance release

This update brings several improvements and workarounds.

Complete list of changes of version 2013 R2

  • Networking: Added support for IPv6 hostnames with zone IDs.
  • SSL: Added workaround for MS FTP's TLS 1.1 bug in close_notify handling.

2013-07-29 Version 2013 R1 #
(build number 4959)

Official support for Mono

All Rebex components now officially support Mono, an open source, cross-platform, implementation of C# and the CLR that is binary compatible with Microsoft.NET. The same assemblies that work on Windows now work on Mono in Linux or Apple's OS X as well.

Unified FTP and SFTP item comparers

Although FtpItemCollection and SftpItemCollection objects have been derived from a shared base class since the introduction of IFtp (a common interface for SFTP and FTP/SSL), a common base class for FtpItemComparer and SftpItemComparer has been missing. In this release, we added FileSystemItemComparer to fix this inconvenience.

Complete list of changes of version 2013 R1

  • All: Added support for Mono.
  • All: Fixed finalizers that used to call state-changed events in some cases.
  • FTP: GetItems now returns links instead of resolved items.
  • FTP: Ftp.Settings.RestoreDateTime now applies to PutFile and GetFile methods as well.
  • FTP: Fixed handling of broken links when deleting.
  • FTP: Fixed a conflict of ConnectPassiveLater option and XFB server workaround.
  • FTP: Added Ftp.Settings.TimeComparisonGranularity property.
  • FTP: Ftp.Settings.UploadCommand now used in GetUploadStream and Upload methods as well.
  • FTP: Multi-file operations use relative paths if possible.
  • FTP: Sanity check for GetCurrentDirectory return value added to multi-file operations.
  • FTP: Added proxy authentication support to FtpSite and FtpOpen proxy types.
  • FTP: Improved Ftp.FileExists to work with servers that return code 553 to indicate non-existent file or directory.
  • FTP: Fixed Gene6 FTP server version detection (v3.10 was detected as v3.1).
  • FTP: Ftp.GetConnectionState() method made more reliable.
  • FTP: Added Ftp.Settings.KeepAliveDuringTransferInterval to replace Ftp.KeepAliveDuringTransferInterval.
  • FTP: When using TransferMethod.Move, only successfully transferred files are deleted.
  • FTP: Enhanced TLS connection error handling - FtpException with ConnectionClosed state is thrown.
  • FTP: Fixed possible race condition on multi-file methods.
  • FTP: Optimized directory existence detection for current directory.
  • FTP: Added workaround for server that appends 'bytes' to the end of response to the SIZE command.
  • FTP: GetList and GetInfo return a path in the Path property.
  • FTP: Item type order of FtpItemComparer reversed to match Rebex SFTP.
  • FTP: Added workaround for ncFTPd's partially-broken MLST command.
  • FTP: TransferType and TransferMode now persist through sessions.
  • FTP: Enhanced multi-file operation logging.
  • FTP: Added FileSystemItemComparer to replace FtpItemComparer and SftpItemComparer.
  • FTP: Multi-file operations fixed to work properly with '.'-based FileSets.
  • FTP: Several options shared by Ftp and Sftp objects added to IFtpSettings.
  • FTP: Fixed Delete("dir/.") that used to delete "dir" as well.
  • SFTP: GetItems now returns links instead of resolved items.
  • SFTP: Sftp.Settings.RestoreDateTime now applies to PutFile and GetFile methods as well.
  • SFTP: Fixed handling of broken links when deleting.
  • SFTP: Added default error messages for SFTP v4 errors.
  • SFTP: Added Sftp.Settings.TimeComparisonGranularity property.
  • SFTP: Added Sftp.Setting.DisableFxpStatWorkaround property.
  • SFTP: Fixed FingerprintCheck, BannerReceived and AuthenticateRequest events in Sftp and Scp.
  • SFTP: Added Sftp.KeepAlive() method.
  • SFTP: Sftp.GetConnectionState() method made more reliable.
  • SFTP: When using TransferMethod.Move, only successfully transferred files are deleted.
  • SFTP: Fixed SftpItem.Name to return "/" instead of "" for the root folder.
  • SFTP: Fixed two event calls in file listing methods that did not use the proper synchronization context.
  • SFTP: GetList and GetInfo return a path in the Path property.
  • SFTP: Added support for restoring creation date/time on upload.
  • SFTP: Enhanced multi-file operation logging.
  • SFTP: Added FileSystemItemComparer to replace FtpItemComparer and SftpItemComparer.
  • SFTP: Multi-file operations fixed to work properly with '.'-based FileSets.
  • SFTP: Several options shared by Ftp and Sftp objects added to IFtpSettings.
  • SFTP: Fixed Delete("dir/.") that used to delete "dir" as well.
  • Proxy: Added support for HTTP CONNECT proxy communication logging.
  • SSH: Fixed SshException.Data["ProtocolCode"] and .Data["ProtocolMessage"] values.
  • SSH: Added verbose logging of raw data during welcome message exchange.
  • SSL: SslInsertEmptyFragments property added to SslSettings.
  • SSL: Fixed null TlsParameters.Certificate handling in server-side TlsSocket.
  • Cryptography: Added support for anyExtendedKeyUsage attribute (in X509 certificates).
  • Cryptography: Added DiffieHellmanCryptoServiceProvider class.
  • Cryptography: Added PrivateKeyFormat.RawPkcs8 format for PrivateKeyInfo.Save and PrivateKeyInfo.Encode methods.
  • Cryptography: RSAManaged.VerifyHash returns false on error.
  • Cryptography: Fixed ArcTwoTransform to treat EffectiveKeySize of 0 as "current KeySize".
  • Cryptography: HMAC fixed to use block length of 128 for algorithms with hashes larger than 256 bits.
  • Cryptography: Fixed certificate verification to better handle server certificate with missing common name (used to throw NullReferenceException).
  • Cryptography: Fixed handle leak in CertificateStore constructor.
  • Core: Enhanced workaround for Stream.Seek on .NET CF.
  • Core: FileLogWriter enhanced to log assembly version when opening log file.
  • Core: Added missing PublicKeyInfo() constructor.
  • Core: Added FileSet.ContainingDirectoriesIncluded option.
  • Core: Added workaround for instances of FileStream that return "[Unknown]" name.
  • Core: EncodingTools support IBM437 charset on all platforms.
  • Core: Added CertificateFindOptions.None.
  • Core: Added FileSystemItemCollection.UsePath property.

2012-11-12 Version 2012 R3 #
(build number 4700)

Official support for Visual Studio 2012

All Rebex components now ship with full support for Microsoft Visual Studio 2012. Samples and tutorials were updated for a new project file format. Older Visual Studio and .NET Framework versions are still supported too.

Task-based asynchronous methods

The major change is the addition of new Task-based asynchronous methods to .NET 4.0/4.5 variant of our components. This brings our API up-to-date with the current trends and makes it possible to utilize the new await keyword available in .NET 4.5 and Visual Studio 2012. Finally, asynchronous programming became easy and seamless. Check out some of the updated samples to see this in action!

Events now using SynchronizationContext

Previously, events raised by asynchronous methods were running in a background thread, making them hard to use in GUI applications. Now, events are raised using the SynchronizationContext captured when the asynchronous method was started, which basically means the events will run on application's GUI thread, making it possible to update application's controls directly from the event code.

Simplified Connect methods

We simplified even the most common task - connecting to a server. All you have to supply to the Connect method of Ftp, Imap, Pop3 or Smtp object is the server hostname and an SslMode. The Connect method automatically chooses the port according to the communication protocol and the specified SSL mode.

Simplified custom certificate validation

We added a new ValidatingCertificate event to Ftp, Imap, Pop3 and Smtp. It makes it much easier to write custom certificate validation routines - all you have to do is add an event handler which either calls e.Accept() or e.Reject().

Complete list of changes of version 2012 R3

  • All: Added .NET 4.x-style task-based asynchronous methods to objects previously using .NET 1.x-style Begin/End asynchronous pattern.
  • All: Asynchronous method events are raised using the current synchronization context for the asynchronous operation.
  • All: Added options to force the old-style event behavior (not using the current synchronization context).
  • All: Added Rebex.Legacy namespace to .NET 4.x builds to allow compiling code that uses old-style asynchronous methods.
  • All: Added official support for Visual Studio 2012.
  • FTP: Added Ftp.Settings.As400ListingDateFormat property to make it possible to specify AS/400 listing date format.
  • FTP: Added Ftp.Settings.UploadCommand to make it possible to specify a different upload command to be used instead of STOR.
  • FTP: Removed deprecated Ftp.SetTransferType and Ftp.Logoff methods.
  • FTP: Removed unused FtpBatchTransferOperation.FileDataBlockProcessed value.
  • FTP: FtpException.Response is now set for some OperationFailure errors as well.
  • FTP: Ftp.DirectoryExists/FileExists methods enhanced to support more servers.
  • FTP: Added a support for "cdir" field on MLST command results (fixed NullReferenceException in GetFileDateTime method with some FTP servers).
  • FTP: Added Ftp.Settings.UseLegacyPaths flag to enable old-style path reporting in multi-file operation events.
  • FTP: Fixed ActionOnExistingFiles.ResumeIfPossible behavior to skip existing files if already transferred.
  • FTP: Multi-file operation events always report absolute paths.
  • FTP: Enhanced source path checking in multi-file operations.
  • FTP: Fixed a bug in AS/400 listing parser that caused the last modified datetime to be parsed incorrectly.
  • FTP: Added simplified Connect method overload with SslMode argument.
  • FTP: FtpBatchTransferException object was made redundant (its properties were moved to FtpException).
  • FTP: Added Ftp.Settings.RestoreDateTime property to make it possible to restore source date/time on target.
  • FTP: Fixed argument checks in GetUploadStream/GetDownloadStream methods.
  • FTP: Added Rename value to ActionOnExistingFiles enum (used in Upload/Download methods).
  • FTP: Events Traversing, TransferProgressChanged, DeleteProgressChanged and ProblemDetected added into Ftp to make it possible to get notified about significant actions and to be able to react to a problem in multi-file operations.
  • FTP: Added Ftp.Settings.SslReuseSessions option to make it possible to disable TLS/SSL session reusing for data transfers.
  • SFTP: Added Sftp.Settings.RestoreDateTime property to make it possible to restore source date/time on target.
  • SFTP: Removed unused SftpBatchTransferOperation.FileDataBlockProcessed value.
  • SFTP: Changed Sftp.PutFile(..., string, long, long) behavior to truncate remote path when zero remote offset is specified (corresponds to Sftp.PutFile(..., string) behavior). Added Sftp.Settings.DisablePutFileZeroOffsetTruncate option to force old behavior.
  • SFTP: Fixed ActionOnExistingFiles.ResumeIfPossible behavior to skip existing files if already transferred.
  • SFTP: Multi-file operation events always report absolute paths.
  • SFTP: Enhanced source path checking in multi-file operations.
  • SFTP: Fixed argument checks in GetStream/GetUploadStream/GetDownloadStream methods.
  • SFTP: Added Rename value to ActionOnExistingFiles enum (used in Upload/Download methods).
  • SFTP: Events Traversing, TransferProgressChanged, DeleteProgressChanged and ProblemDetected added into Sftp to make it possible to get notified about significant actions and to be able to react to a problem in multi-file operations.
  • SCP: Added connected-check to Scp object methods.
  • SCP: Changed default SCP upload packet size from 32KB to 8KB (the former size was too big for some servers).
  • SCP: Added workaround for SCP in OpenSSH 4.x that doesn't accept quoted paths.
  • Networking: NetworkSessionException is now the base class for all network protocol exceptions.
  • Networking: Task-based asynchronous methods added to IFtp interface.
  • Networking: Removed several Socket.Available calls, resulting in higher speed and Windows Azure compatibility.
  • Networking: Events Traversing, TransferProgressChanged, DeleteProgressChanged and ProblemDetected added into IFtp to make it possible to get notified about significant actions and to be able to react to a problem in multi-file operations.
  • SSH: Better error message for unsuccessful keyboard-interactive fallback workaround.
  • SSH: Enhanced "Invalid decoder state" error reporting.
  • SSH: Added support for diffie-hellman-group-exchange-sha256 key exchange algorithm.
  • SSH: Added SshPublicKey class, SshSession.ServerKey property and FingerprintCheck.ServerKey property (to make it possible to determine server host key in addition to fingerprint).
  • SSL: Fixed a bug in server-side TLS/SSL that caused it to fail when session resuming was enabled.
  • SSL: Fixed TlsException serialization that failed for some errors.
  • SSL: Fixed a bug that caused problems with TLS/SSL in FIPS-only mode.
  • Cryptography: Fixed a bug in TransformFinalBlock method of Rebex.Security.Cryptography ciphers that caused interoperability issues with CryptoStream.
  • Cryptography: Fixed PKCS#7 padding check in built-in ciphers.
  • Cryptography: Added EncodingTools class that adds support for all the charsets needed on all platforms.
  • Cryptography: Added auto-detection of a bug in unpatched .NET 3.5's AesCryptoServiceProvider object.
  • Cryptography: Implicit ObjectIdentifier(string) constructor added.
  • Cryptography: Fixed CryptoHelper.CreateAlgorithm to return CSP version of SHA-2 hash algorithms when available.
  • Cryptography: Fixed CertificateFinder property behavior to keep old certificates if no certificates are found by the new finder.
  • Cryptography: Server certificate verification routine now allows certificates with '*.domain.net' names to be used for 'domain.net' in addition to '*.domain.net'.
  • Cryptography: Fixed a bug in private key decryption routine which failed with keys encrypted with PKCS #12 key derivation algorithm.
  • Core: Fixed P/Invokes in NTLM/Kerberos code.
  • Core: AddRange method added to file item collections.
  • Core: FIPS 140-2 compliant mode enhancements.
  • Core: Fixed certificate validation issue on Windows XP and Windows Server 2003.
  • Core: Added Certificate.Thumbprint property.
  • Core: Fixed a bug in certificate chain building routine that caused it to ignore additional stores in some cases.

2012-06-11 Version 2012 R2 #
(build number 4546)

Client certificate authentication in SFTP & SSH

Although SFTP/SSH usually use password-based or public-key-based authentication, some servers support X509 client certificate authentication as well. Unfortunately, not all servers support this, and those which do use a variety of different protocol extensions to achieve it. In this release, we have added client certificate authentication compatible with VanDyke VShell server. If it doesn't work with your server, please let us know.

Complete list of changes of version 2012 R2

  • FTP: Added support for "double-login" FTP proxy servers.
  • FTP: Added Ftp.GetItems(string, ...) methods.
  • FTP: Link resolving code enhanced to better handle FTP servers on Un*x-like platforms.
  • FTP: Added support for additional MLSD attributes (creation time, Unix mode/owner/group and Windows file attributes).
  • FTP: Added support for OPTS UTF8 on RaidenFTPD server.
  • FTP: Added Download/Upload(string, string) method overload.
  • FTP: Added support for common names with '*' wildcard to CertificateChain.Validate.
  • FTP: Added support for instances of MS FTP 7.5 which request hostname.
  • FTP: MLST is now used in Ftp.GetFileDateTime by default.
  • FTP: Added workaround to SetFileDateTime that checks whether the correct time was set and fixes it if it was not.
  • FTP: Compatibility enhancements in multifile methods.
  • FTP: Fixed FtpProxy serialization where Encoding was omitted.
  • SFTP: Added support for POSIX rename ('posix-rename@openssh.com' extension).
  • SFTP: Fixed a bug in Sftp.GetFiles which caused an ArgumentOutOfRangeException on some servers.
  • SFTP: SftpItem uses UTC time for range checks (previously there were problems with times close to 1970-01-01).
  • SFTP: Added Download/Upload(string, string) method overload.
  • SFTP: Added Sftp.GetItems(string, ...) methods.
  • Networking: UseLargeBuffers option added into IFtpSettings.
  • SSH: Added SshPrivateKey(AsymmetricAlgorithm) constructor that makes it possible to initialize it from RSACryptoServiceProvider/DSACryptoServiceProvider (useful for SmartCard-based keys).
  • SSH: Fixed wrong handling of large remote SSH channel window sizes (used by mod_sftp server).
  • SSH: Client certificate authentication added (compatible with VanDyke VShell server).
  • SSH: ZLIB support announced even when not preferred (without that, we were unable to connect to servers that refuse uncompressed sessions).
  • SSH: Fixed a bug that causes a misleading error to be reported on immediately-closed connections.
  • SSH: Added workaround for mod_sftp/0.9.7 which occasionally produces broken DSA signatures.
  • SSL: Fixed a misleading error message which was reported when certificate revocation status could not be checked.
  • SSL: When ProtocolVersion error occurs, data received prior to it is logged.
  • Cryptography: Fixed local/UTC time comparison in Certificate.IsTimeValid.
  • Cryptography: Added implicit conversion between Certificate object and X509Certificate/X509Certificate2 objects.
  • Cryptography: Enhanced compatibility with Mono on non-Windows platforms - Certificate validation now works!
  • Cryptography: Support for saving .PFX/.P12 files added to Certificate.Save method.
  • Cryptography: Added new overloads of Certificate.Associate that make it possible to permanently bind the private key to the certificate.
  • Cryptography: Added Certificate.FriendlyName property.
  • Cryptography: Fixed Certificate.SignHash method which used to fail on .NET 2.0 when an associated key was used for MD5SHA1 signature generation.
  • Cryptography: Fixed MD5Managed.HashSize property which used to return 0.
  • Cryptography: Certificate.HasPrivateKey code in .NET CF version changed to behave identically to .NET version.
  • Core: Added FileSet.Flatten option (makes it possible to ignore source directory structure and copy all files into single target directory).
  • Core: Enhanced error reporting of file-path-based methods.
  • Core: Added LocalItem and LocalItemCollection classes (used by FileSet.GetLocalItems method).

2012-03-01 Version 2012 R1 #
(build number 4444)

Components DLLs have been renamed

We found out that the DLL naming scheme we decided to use back in 2003 was no longer sustainable and decided to change it. Instead of Rebex.Net.Ssh.dll, Rebex.Net.SecureSocket.dll, Rebex.Net.ProxySocket.dll and Rebex.Security.dll, we now have Rebex.Common.dll and Rebex.Networking.dll. Most of the other DLLs were renamed as well during the process (Rebex.Net.Ftp.dll became Rebex.Ftp.dll, for example). We are sorry for any inconvenience this may have caused, but an alternative solution - introduction of a new DLL for shared functionality - would not be hassle-free either. Fortunately, in order to upgrade to the new version, most customers will only need to remove references to the old DLLs and add references to the new ones because the API is still backward-compatible.

New multi-file methods in Rebex SFTP and FTP/SSL

FTP/SSL and SFTP got several new methods: Upload, Download, Delete and GetItems. The first two are replacements for PutFiles/GetFiles (and support move operation in addition to copy), Delete makes it possible to delete multiple files (or even a directory tree) at once and GetItems makes it possible to retrieve a list of files for the whole directory tree in one call.

Common API for SFTP and FTP/SSL (experimental)

Lot of our customers have been asking for a common API capable of both SFTP and FTP/SSL. Even though Ftp and Sftp objects provide a very similar API, they are still two distinct classes and writing code that can use either of them was hard. Now, it got much better with the introduction of IFtp interface.

Faster Blowfish and Twofish algorithms for Rebex SFTP and Rebex SSH Shell

Bruce Schneier's Blowfish and Twofish symmetric encryption algorithms are a popular choice for SSH communication encryption. Although we have been already supporting both for a few years, we developed a new managed implementation that is substantially faster than the old one.

Complete list of changes of version 2012 R1

  • All: SecurityRuleSet.Level2 is used for .NET 4.0 binaries.
  • All: Added a Stream.Flush() call after each Stream.Seek() or Stream.Position call in .NET Compact Framework (workaround for .NET CF FileStream bug).
  • FTP: Auto-resume capability added for PutFiles/GetFiles methods.
  • FTP: Fixed a bug in handling some NOOP responses.
  • FTP: DoNotDetectFeatures option now turns off server feature detection completely, not only the one using the FEAT command.
  • FTP: Fixed a bug in PutFiles method that caused incorrect behavior when a root-based masked path was specified.
  • FTP: Better GlobalScape server detection.
  • FTP: Ftp.GetFile called with non-zero localOffset creates the local file if it doesn't exists.
  • FTP: String comparison methods use StringComparison.Ordinal.
  • FTP: GetList/GetRawList methods log the list content at Debug log level.
  • FTP: Added workaround to GetFiles method for servers that return full paths in file listings.
  • FTP: New values related to Upload, Download, Delete and GetItems methods added to FtpBatchTransferOperation enum.
  • FTP: Added a workaround for servers that append a dot to their SIZE response.
  • FTP: Fixed date parsing in 24h DOS-like file listings.
  • FTP: Fixed problems with synchronization when EnableMultipleBlockingCalls option is enabled.
  • FTP: FTP no longer attempts to resume TLS/SSL session for data connection when TlsOptions.DoNotCacheSessions option is used.
  • FTP: New Download, Upload, Delete and GetItems methods added to Ftp object (along with associated enums and classes).
  • FTP: Added Ftp.Settings property that replaces and extends Ftp.Options.
  • FTP: Ftp object implements IFtp interface to make it easier to write code which works with both FTP and SFTP.
  • FTP: Multi-file operations optimized by omitting existence check of items found during the operation.
  • FTP: Added a workaround for GlobalScape servers that used to ignore the last packet in some circumstances.
  • SFTP: Auto-resume capability added for PutFiles/GetFiles methods.
  • SFTP: Added workarounds for another SFTP server where SSH_FXP_STAT and SSH_FXP_REALPATH commands (used by many Rebex SFTP methods) don't always work (for aliased directories, for example).
  • SFTP: Added workaround for ChangeDirectory problems with WS_FTP server.
  • SFTP: OpenSSH on a Unix-like OS is now detected properly.
  • SFTP: Fixed a bug in PutFiles method that caused incorrect behavior when a root-based masked path was specified.
  • SFTP: Changing Sftp's or Scp's LogWriter now changes the underlying SshSession's LogWriter as well.
  • SFTP: Added SftpOptions.UseSmallPackets option that reportedly solves speed issues in some rare circumstances.
  • SFTP: It's now possible to call Sftp.Login again if it fails.
  • SFTP: Added TryPasswordFirst option to try "password" authentication first and "publickey" later (by default, the opposite order is used).
  • SFTP: New values related to Upload, Download, Delete and GetItems methods added to SftpBatchTransferOperation enum.
  • SFTP: String comparison methods use StringComparison.Ordinal.
  • SFTP: New Download, Upload, Delete and GetItems methods added to Sftp object (along with associated enums and classes).
  • SFTP: Added Sftp.Settings property that replaces and extends Sftp.Options.
  • SFTP: Sftp object implements IFtp interface to make it easier to write code which works with both FTP and SFTP.
  • SFTP: Multi-file operations optimized by omitting existence check of items found during the operation.
  • Networking: Socket.NoDelay is used by default in non-CF version of Rebex components.
  • SSH: Fixed error handling in SshSession.OpenTcpIpTunnel method that caused troubles when multiple channels were active at the same time.
  • SSH: SshChannel no longer attempts to adjust window size after the channel has been closed.
  • SSL: Fixed non-working TlsSocket.BeginSend and BeginReceive methods.
  • Cryptography: Faster Blowfish and Twofish algorithms.
  • Cryptography: SubjectPublicKeyInfo.Load method now supports binary keys.
  • Cryptography: Removed lots of CryptoApi dependencies from Certificate code.
  • Cryptography: 4096-bit DSA keys (used by some SSH servers) are no longer rejected.
  • Cryptography: Diffie-Hellman and DSA algorithms fall back to managed ModPow calculation on .NET CF with missing "Enhanced DSA and Diffie-Hellman" CSPs.
  • Cryptography: Added Certificate.Associate(PrivateKeyInfo) method.
  • Cryptography: Certificates associated with a private key using Associate method now support MD5SHA1 hash algorithm and suitable for TLS/SSL client certificate authentication.
  • Core: Fixed a bug in TraceLogWriter that caused an additional newline to be written at the end of each message.
  • Core: Added FileSystemItem and FileSystemItemCollection classes.
  • Core: Better readability in Verbose-level logs.
  • Core: Thread ID added to all log messages.

2011-03-09 Version 1.0.4086.0 #
(build number 4086)

Complete list of changes of version 1.0.4086.0

  • FTP: Missing end-of-data blocks in are ignored in MODE Z transfers (some FTP servers failed to send them).
  • FTP: GetList, GetRawList and GetNameList methods with empty arguments now behave like their parameter-less variants.
  • SSH Core: Added workaround for old SSH servers that miscalculate HMAC-SHA1 keys.
  • SSH Core: Added SshParameters.AuthenticationMethods to make it possible to only enable desired authentication methods.
  • SSH Core: SendEof method added to SshChannel to make it possible to achieve plink-like functionality.
  • SSH Core: Fixed a bug in SSH channel window size adjustment code which could cause a timeout on servers which send oversized packets.
  • SSH Core: Fixed a bug that prevented SSH key renegotiation requests from being processed, resulting in a timeout.
  • SSH Core: Abort flag checking messages removed from Debug log.

2011-02-11 Version 1.0.4060.0 #
(build number 4060)

Complete list of changes of version 1.0.4060.0

  • FTP: Group, Owner and Permissions properties added to FtpItem class.
  • FTP: Added support for Transnet FTP Gateway's list format.
  • FTP: BytesTotal and ProgressPercentage properties added to Ftp.TransferProgress event arguments.
  • FTP: Added a new overload for the Login method that accepts account in addition to username and password.
  • FTP: Added FtpOptions.ForceListHiddenFiles option to force using "LIST -la" instead of "LIST" command to retrieve file and directory listings.
  • FTP: Fixed a bug that caused a list parser to failed for symlinks with missing target path.
  • FTP: Added support for Tandem Guardian FTP server list format.
  • FTP: FtpItemComparer class added to ease sorting of FtpList items.
  • FTP: Enabling FtpOptions.EnableControlConnectionFlushing option doesn't cause a noticeable slowdown now.
  • FTP: Ftp.PutFiles method (in ThrowExceptionOnLinks mode) correctly detects the links in Windows 7 which were not detected previously.
  • FTP: Added a workaround for servers that advertise MLST support but report a "Can't check for file existence" error later.
  • FTP: Ftp.IsAuthenticated property added to make it easily possible to skip calling Ftp.Login method for users already authenticated using a certificate.
  • FTP: Fixed a bug in ZLIB decompression routines.
  • FTP: Fixed improper TLS/SSL session reusing. FtpOptions.FtpReuseControlConnectionSession option added to make it possible to re-use the control connection session for subsequent data connections as well.
  • FTP: Support for IBM AS/400 FTP listing format added.
  • FTP: Added workaround for FTP servers which don't properly end the ZLIB stream when MODE Z is used.
  • SFTP: Bandwidth throttling support in Rebex SFTP through Sftp object's MaxUploadSpeed/MaxDownloadSpeed properties.
  • SFTP: SetFileDateTime in SFTP v4 is now compatible with WS_FTP.
  • SFTP: Sftp object's AbortTransfer method now properly cancels operations that are just about to start as well.
  • SFTP: Added SftpItemComparer class to ease sorting of SftpItemCollection items.
  • SFTP: Added workarounds to Sftp.GetStream method SFTP servers that don't support the Append mode.
  • SFTP: BytesTotal and ProgressPercentage properties added to Sftp.TransferProgress event arguments.
  • SFTP: Added workarounds for several SFTP servers where SSH_FXP_STAT and SSH_FXP_REALPATH commands (used by many Rebex SFTP methods) don't always work (for aliased directories, for example).
  • SFTP: Sftp.PutFiles method (in ThrowExceptionOnLinks mode) correctly detects the links in Windows 7 which were not detected previously.
  • SFTP: Added a workaround for SFTP server that sent duplicate filenames in their listings.
  • SCP: GetFiles and PutFiles methods added to Scp object to make it possible to transfer multiple files or a whole directory tree in one call.
  • ProxySocket: Added a new ILogWriter implementation that logs all messages to .NET's System.Diagnostics.Trace.
  • Cryptography: Added a new overload of SshPrivateKey.Save to make it possible to save keys in SSLEay/OpenSSH format (in addition to PuTTY .ppk and PKCS #8 formats).
  • Cryptography: Added CertificateChain.Save method to save the chain in .p7b format.
  • Cryptography: Fixed a bug in DistinguishedName object that caused the elements of string representation of DNs to be reversed.
  • Cryptography: Added CryptoHelper.ForceManagedAes flag as a workaround to .NET's leaking AesCryptoServiceProvider.
  • SSH Core: AuthenticationRequest event added to make it possible to deal with all kinds of "keyboard-interactive" authentication prompts.
  • SSH Core: Fixed a possible race condition that might have occurred when using the same SshSession instance from multiple threads.
  • SSH Core: Enhanced automated "keyboard-interactive" authentication to support more variants of password prompt.
  • SSH Core: Fixed a bug in ZLIB decompression routines.
  • SSH Core: SshSession.Encoding property added.
  • SSH Core: Added SshOptions.WaitForServerWelcomeMessage option.
  • SSH Core: Updated SFTP to detect, read and skip unexpected malformed packets which used to throw a "Message with invalid length xxx was received." exception when trying to login.

2010-07-20 Version 1.0.3854.0 #
(build number 3854)

Complete list of changes of version 1.0.3854.0

  • FTP: Ftp class inherits from NetworkSession base class that implements some common properties.
  • FTP: Added a workaround for an FTP server with broken MLST output.
  • FTP: SITE command is no longer used to detect MS IIS FTP 7.x because it caused problems to some firewalls.
  • FTP: FtpList.GetEnumerator is now an implementation of IEnumerable<FtpItem>.
  • FTP: Better error handling in GetFiles/PutFiles methods.
  • FTP: Added FIPS 140-2 compliant mode that is automatically enabled on systems where only compliant algorithms are allowed.
  • SFTP: Added Sftp.GetStream method that makes it possible to open a readable/writable/seekable stream of a remote file.
  • SFTP: Sftp class inherits from NetworkSession base class that implements some common properties.
  • SFTP: Added SftpOption.UseReadWriteModeForDownloads.
  • SFTP: Added ProtocolVersion property to Sftp class.
  • SFTP: SftpItemCollection.GetEnumerator is now an implementation of IEnumerable<SftpItem>.
  • SFTP: Fixed a DateTime range check in SftpAttributes.Modified and .Created which was performed before the conversion to UTC.
  • SFTP: Better error handling in GetFiles/PutFiles methods.
  • SSH Core: In FIPS-only mode, a CryptoAPI implementation of AES is used if available.
  • SSH Core: Added support for aes*-ctr and 3des-ctr ciphers.
  • SSH Core: SshSession class inherits from NetworkSession base class that implements some common properties.
  • SSH Core: SshChannel.ExtendedDataReceived event added to make it possible to receive extended data.

2010-05-20 Version 1.0.3793.0 #
(build number 3793)

Complete list of changes of version 1.0.3793.0

  • All: Packages for .NET 4.0 and Visual Studio 2010 now available.
  • FTP: A more meaningful exception is raised when a premature OK response is received while still uploading data.
  • FTP: Information about invalid data IP address detection is now written to the log.
  • FTP: Fixed a bug that caused "/" local path argument of PutFiles/GetFiles methods to be treated as current directory.
  • FTP: More information is logged when a FTP connection is broken.
  • FTP: A full local path is passed in FtpBatchTransferProgressEventArgs.
  • FTP: Added experimental FtpOptions.UseLargeBuffers to use larger internal buffers (doesn't seem to make substantial difference on most systems).
  • FTP: Fixed a bug in PRET command implementation that caused problems with DrFTPd servers.
  • FTP: FtpTransferProgressEventArgs now contain RemotePath and LocalPath when available.
  • FTP: FtpBatchTransferException is now serializable.
  • FTP: On .NET Compact Framework, SO_LINGER option is enabled for data sockets.
  • FTP: Added support for Tumbleweed's SSL-like encrypted tunnel encryption.
  • FTP: Useless pre-authentication feature check in implicit SSL mode removed.
  • SFTP: Fixed a bug that caused "/" local path argument of PutFiles/GetFiles methods to be treated as current directory.
  • SFTP: Added Sftp.Bind and Scp.Bind method to make it possible to bind the SFTP or SCP object to existing SSH session.
  • SFTP: A full local path is passed in SftpBatchTransferProgressEventArgs.
  • SFTP: SftpTransferProgressEventArgs now contain RemotePath and LocalPath when available.
  • SFTP: SftpBatchTransferException is now serializable.
  • SFTP: Queued data packets are no longer written to the output stream after download operation has been aborted.
  • SSH Core: Added a workaround for a server that announces support for "password" authentication but requires "keyboard-interactive" instead.
  • SSH Core: Fixed a bug in ZLIB compression routines that caused compatibility problems with GlobalScape and BitVise servers when compression was enabled.
  • SSH Core: Fixed a bug that caused SSH session to hang if a broken (incomplete) SSH packet arrived (rare).

2010-03-11 Version 1.0.3723.0 #
(build number 3723)

Complete list of changes of version 1.0.3723.0

  • FTP: Maximum allowed UploadBufferLength changed from 64KB to 16MB.
  • FTP: Ftp.Connect method no longer throws UriFormatException when invalid proxy hostname is specified.
  • FTP: Added support for OTC S/KEY(tm) (One-Time Password System) authentication according to RFC 2289 (optionally used by Serv-U FTP Server). (S/KEY is a trademark of Bellcore.)
  • FTP: Added FtpBatchTransferOptions.XCopy batch transfer mode. This is an alternative form of FtpBatchTransferOptions.Recursive that traverses all subdirectories but only transfers files that match the specified mask.
  • FTP: New Ftp.DataAddress property to make it possible to specify active mode IP address transmitted to the FTP server.
  • FTP: FtpTransferProgressEventArgs.BytesPerSecond property added that contains the estimated current speed.
  • FTP: HierarchyRetrieve events are no longer raised when only a single file is transferred.
  • FTP: A more meaningful exception is thrown when a directory path is passed to Ftp.GetFile method instead of file path.
  • FTP: Ftp.TransferProgress event is called less often on high-speed connections now (several times per second is sufficient).
  • FTP: FtpOptions.SendDataAsynchronously is deprecated and ignored.
  • FTP: Fixed PutFiles method to accept all kinds of root paths (such as "c:", "c:/", or "c:\" - previously, only "c:\." worked).
  • FTP: Added Ftp.DefaultImplicitSslPort constant.
  • SFTP: A more meaningful exception is thrown when a directory path is passed to Sftp.GetFile method instead of file path.
  • SFTP: Added support for getting and setting file creating date (only works with servers that support SFTP v4).
  • SFTP: Fixed SSH_FXP_READ packet logging code that caused some packets not to appear in the communication log.
  • SFTP: Added a workaround for servers where SSH_FXP_STAT command doesn't work correctly on directories.
  • SFTP: Fixed a bug in GetFile method that caused it to hang if length was specified.
  • SFTP: Added SftpBatchTransferOptions.XCopy batch transfer mode. This is an alternative form of FtpBatchTransferOptions.Recursive that traverses all subdirectories but only transfers files that match the specified mask.
  • SFTP: Fixed PutFiles method to accept all kinds of root paths (such as "c:", "c:/", or "c:\" - previously, only "c:\." worked).
  • SFTP: SftpTransferProgressEventArgs.BytesPerSecond property added that contains the estimated current speed.
  • SFTP: HierarchyRetrieve events are no longer raised when only a single file is transferred.
  • SFTP: Added experimental SftpOptions.UseLargeBuffers to use larger internal buffers (doesn't seem to make substantial difference on most systems).
  • SFTP: Data-block-receiving routines optimized to write directly to the output stream without a round-trip through a temporary buffer.
  • SFTP: Fixed a bug that made it impossible to call Sftp.GetFiles method on a root directory.
  • SFTP: Sftp.TransferProgress event is called less often on high-speed connections now (several times per second is sufficient).
  • ProxySocket: The underscore character is now allowed in hostnames (this is non-standard, but used by Windows).
  • ProxySocket: FileLogWriter is capable of logging into a single file from multiple applications now.
  • ProxySocket: ProxySocket.Send behavior changed to always send all the data or fail.
  • Cryptography: Added Certificate.LoadDerWithKey method to make it possible to easily load certificates with private keys in external file (Unix-style).
  • Cryptography: Support for PKCS #7 EnvelopedData encrypted using RC2 with effective key length not equal to key data length.
  • Cryptography: Fixed a bug in EnvelopedData class that cause a NullReferenceException to be raised when unsupported encryption algorithm is encoutered.
  • Cryptography: Internal ModPow method optimized.
  • Cryptography: Key generation support removed from RSAManaged a DSAManaged. No part of any of our components ever used it at it was prohibitively slow anyway.
  • SSH Core: Added SshFingerprint.Compute and SshFingerprint.FromBase64String methods to make it possible to easily calculate a fingerprint of the supplied public key.
  • SSH Core: ZLIB compression is now switched off by default (caused problems with some servers).
  • SSH Core: Client KEX_INIT packet is sent without waiting for the server side one (this is the only proper behavior).
  • SSH Core: Added SshSession.KeepAlive method to make it possible to periodically "ping" the SSH connection to keep it working and detect failures.
  • TLS/SSL: TlsSocket.SessionID is deprecated because its global cache was unsuitable for most applications. TlsSocket.Session (and the associated TlsSession class) should be used instead.

2009-10-27 Version 1.0.3588.0 #
(build number 3588)

Complete list of changes of version 1.0.3588.0

  • FTP: Added a workaround for bad PASV implementation at ftp-edi.pubnet.org.
  • FTP: Enhanced MODE Z support.
  • FTP: CCC command no longer actively sends close_notify TLS message by default.
  • FTP: Fixed a bug in proxy code that caused data transfers to fail when using HTTP CONNECT proxy with NTLM authentication.
  • FTP: Added FtpOptions.ConnectPassiveLater option - makes the passive mode transfer initialize the connection only after the LIST/NLST/RETR/STOR commands are sent (instead of after PASV).
  • SFTP: SFTP v4 support added.
  • SFTP: Fixed a bug in CreateDirectory/ChangeDirectory workaround for CoreFTP.
  • SFTP: Added workaround for ProFTPd's mod_sftpd SSH_FXP_REALPATH command that fails for newly created directories.
  • ProxySocket: Proxy object now has Encoding property that makes it possible to specify character set to be used for parsing server responses.
  • ProxySocket: ProxySocketException.ErrorCode property now returns HTTP and Socket4/Socks5 error codes when available.
  • ProxySocket: SspiAuthentication and GssApiProvider classes added that provide GSSAPI/SSPI functionality.
  • Cryptography: Certificate's CRL distribution point list can be accessed using GetCrlDistributionPoints method.
  • SSH Core: Fixed a bug in ArcFour cipher implementation that made it unusable.
  • SSH Core: Fixed a bug that caused an SSH welcome message to be parsed incorrectly when split accross multiple packets.
  • SSH Core: Added support for ZLIB transfer compression.

2009-07-15 Version 1.0.3484.0 #
(build number 3484)

Complete list of changes of version 1.0.3484.0

  • SSH Core: Fixed a bug in GSSAPI authentication that caused it to work improperly in 32bit .NET Framework.

2009-07-10 Version 1.0.3479.0 #
(build number 3479)

Complete list of changes of version 1.0.3479.0

  • FTP: Added automated UTF-8 detection on modern FTP servers.
  • FTP: Listing parser enhanced to support some non-English month names that sometimes occur in file listings of broken servers.
  • FTP: Fixed a bug that might cause an active FTP connection to immediately time out when executed on an existing but idle connection.
  • FTP: IEnumerable<T> support added to collections for .NET 2.0 and higher.
  • FTP: Ftp.CopyToAnotherServer method can now handle Abort requests.
  • FTP: Bandwidth throttling functionality slowed down the transfer too much when a limited but high speed was requested.
  • SFTP: IEnumerable<T> support added to collections for .NET 2.0 and higher.
  • Cryptography: .PFX/P12 private key file loading support for Windows Mobile 5 and newer.
  • Cryptography: Added support for signatures based on SHA-2 (SHA-256, SHA-384 and SHA-512).
  • Cryptography: If .NET 3.5 is available, a new and much faster AES implementation is used instead of RijndaelManaged.
  • Cryptography: Behavior of certificate finders in CMS/PKCS #7 was enhanced - embedded certificates are always searched now.
  • SSH Core: Support for GSSAPI authentication (gssapi-with-mic) added. Kerberos (not on .NET CF) and NTLM mechanisms are supported. MS SSPI is used as an underlying authentication provider.
  • SSH Core: SshFingerprint class extended to support multiple hash algorithms.
  • SSH Core: Added BannerReceived event that ca be used to receive banner messages sent by the server.
  • SSH Core: Added FingerprintCheck event as an alternative way to check server fingerprint.
  • SSH Core: Support for authentication using both username/password and public key at the same time made compatible with Maverick SSHD server.
  • TLS/SSL: Enhanced logging of certificate-related actions during the TLS/SSL negotiation.

2009-05-20 Version 1.0.3428.0 #
(build number 3428)

Complete list of changes of version 1.0.3428.0

  • FTP: Fixed a bug in GetRemoteChecksum method that caused it not to work for filenames that contain space characters.
  • FTP: Disposing Ftp object from another thread while an operation is in progress no longer causes NullReferenceException and other similar errors to occur in the operation thread.
  • FTP: Better URL handling in the Connect method (although it is hostname-only by design, lot of users actually pass URLs to it).
  • FTP: Enhanced logging of incoming connection in active mode.
  • FTP: Added a workaround for WS_FTP that requires MLST/MLSD arguments to be quoted if they contain spaces.
  • FTP: Added FtpException.Transferred property as a replacement for the misspelled FtpException.Transfered property.
  • FTP: Fixed a bug that caused FtpException's BytesTransferred property not to be set for exceptions thrown by asynchronous methods.
  • FTP: Fixed a bug in MODE B transfer mode that might cause an improper block length to be received in rare circumstances.
  • FTP: Fixed a bug in GetFiles and PutFiles method that caused a wrong path to be used when a filename only was specified or when a root path was specified.
  • SFTP: Added support for transfer compression through a plugged-in library.
  • SFTP: Upload and download speed enhanced a lot using the pipelining approach.
  • SFTP: UTF-8 encoding is used by default for WS_FTP server.
  • SFTP: Upload and download buffer size changed from 32K to 28K because the original size resulted in two packets being sent.
  • SFTP: Fixed a misleading error message that occurs when both password and public key authentication is required by the server but the clients only supply one of the credentials.
  • SFTP: Added several workarounds for CoreFTP server's SFTP implementation that suffers from numerous bugs such as missing file attributes or half-working SSH_FXP_REALPATH command.
  • SFTP: Fixed a bug in GetFiles and PutFiles method that caused a wrong path to be used when a filename only was specified or when a root path was specified.
  • SCP: Compatibility enhancements in Scp object's PutFile method.
  • SCP: Added a workaround for Bitvise's SCP that closes the SCP channel too early.
  • SSH Core: Added FIPS 140-2 compliant mode that is automatically enabled on systems where only compliant algorithms are allowed.
  • SSH Core: Added a new exception status - PasswordChangeRequired - that is used when a password change is required before authentication can be successfully completed.
  • TLS/SSL: Exception thrown by the certificate verifier because of certificate hostname mismatch is more descriptive.
  • TLS/SSL: Added a workaround for vsftpd that occasionally leaks unencrypted error messages while TLS/SSL is in use, which causes an error when the client tries to decode them as proper TLS/SSL messages.
  • TLS/SSL: Fixed a bug that could cause a deadlock when closing a socket from one thread that is currently sending data using another thread.
  • TLS/SSL: Fixed possible NullReferenceException in TlsSocket class.
  • TLS/SSL: BeginSend and BeginReceive methods work again.

2009-02-14 Version 1.0.3333.0 #
(build number 3333)

Complete list of changes of version 1.0.3333.0

  • FTP: Asynchronous operations now use a thread pool.
  • FTP: FileExists and DirectoryExists methods modified to return the result for "." and "/" arguments instantly without asking the server.
  • FTP: Fixed a workaround for problem with local IP address announced by the server when connecting through ActiveSync to an FTP server that runs on the same machine.
  • FTP: KeepAliveDuringTransfer option made compatible with more FTP servers.
  • FTP: When client certificate authentication is done with Tumbleweed FTP server, an automated login attempt is performed.
  • SFTP: Detection of GlobalScape server enhanced to properly detect more versions.
  • SCP: Scp.Logger renamed to Scp.LogWriter to match the other objects including Sftp.
  • SCP: Fixed improper handling of the first success response.
  • ProxySocket: Fixed a bug in Socks4/Socks5 proxy code that made it impossible to use FTP in active mode with these proxies.
  • Cryptography: CertificateStore.FindCertificate overloads that accept DistinguishedName now search for certificates signed by intermediate CAs as well.
  • Cryptography: Enhanced treatment of empty passwords in the PFX loader.
  • Cryptography: Certificates with SubjectAlternativeName extension marked as critical are now treated as not having any e-mail address assigned to them if no e-mail address is found in the extension data.
  • Cryptography: Fixed a bug in DiffeHellmanManaged.ImportParameters method that made it impossible to import key with all parameters filled.
  • SSH Core: Banner message is now logged when using the LogWriter functionality.
  • SSH Core: Added workaround for badly-formed DSA signature produced by SSH Secure Shell 3.1.0 (and possibly other versions).
  • SSH Core: Added a workaround to the Compact Framework version for VanDyke VShell server that sends primes that are one bit longer than expected.

2009-01-12 Version 1.0.3300.0 #
(build number 3300)

Complete list of changes of version 1.0.3300.0

  • FTP: Added PutFiles and GetFiles method to make it possible to transfer multiple files easily by transferring a whole directory tree or use wildcards.
  • FTP: Packages for .NET Compact Framework 3.5 added.
  • FTP: Transfer compression support added to .NET CF 3.5 build (it has only been available for .NET 2.0 and higher previously).
  • FTP: Added a workaround for Serv-U FTP that ungracefully closes data connection for zero-length files.
  • FTP: A better exception is now thrown by a method that has been terminated by calling Dispose from another thread.
  • FTP: Substantial transfer speed increase on fast networks.
  • FTP: Fixed a bug that caused the KeepAliveDuringTransfer option not to work properly.
  • FTP: Asynchronous method threads are now named.
  • FTP: Added a workaround for misconfigured FTP servers that send an unusable private network address when initializing a data transfer.
  • FTP: Disabled control connection flushing when sending commands because it caused a noticeable slowdown on fast networks.
  • FTP: FtpOptions.KeepAliveDuringTransfer option code enhanced by adding the '200 No-operation ...' response to the list of possible NOOP command responses.
  • FTP: SetTransferType method changed to behave just like TransferType property and marked obsolete.
  • FTP: Added workaround for some releases of SecureTransport server - ForceSilentCcc option is enabled automatically.
  • FTP: Fixed a bug in CopyToAnotherServer method that caused it to fail unless SecureTransfers property was set to false.
  • SFTP: Added PutFiles and GetFiles method to make it possible to transfer multiple files easily by transferring a whole directory tree or use wildcards.
  • SFTP: Setting ServerType property to Unix now causes '\' not to be treated as a directory separator for the remote server.
  • SFTP: A better exception is now thrown by a method that has been terminated by calling Dispose from another thread.
  • SFTP: Packages for .NET Compact Framework 3.5 added.
  • SFTP: Asynchronous operations now use a thread pool.
  • SFTP: Asynchronous method threads are now named.
  • SCP: Added Scp class to make it possible to transfer files using the legacy SCP protocol.
  • Cryptography: Added support for reading and setting private key comment.
  • Cryptography: Added RootCertificate and LeafCertificate properties to CertificateChain class.
  • Cryptography: Added GetCommonName method to DistinguishedName class.
  • Cryptography: Added IEnumerator support to CertificateChain.
  • Cryptography: Added Equals method to DistinguishedName class.
  • Cryptography: Fixed a bug in OID decoding routine that cased it to occasionally hang on broken input data.
  • Cryptography: Added new Certificate.LoadPfx to make it possible to load keys into machine store.
  • Cryptography: Fixed a problem in Certificate.Decrypt method that made the decryption fail with some rare certificates.
  • Cryptography: Added Certificate.Associate method to make it possible to associate a RSA/DSA crypto service provider with access to a private key with a certificate.
  • SSH Core: Added support for saving PuTTY private keys.
  • SSH Core: Added ChangePassword method to SshSession class to make it possible to change user password.
  • SSH Core: Added support for servers that don't require a password.
  • SSH Core: Fixed a bug in SshSession that caused problems when multiple channels through the same SSH session were used at the same time.
  • TLS/SSL: Anonymous TLS/SSL ciphers are now supported (but disabled by default).
  • TLS/SSL: Fixed an internal static method that was not thread safe.

2008-07-23 Version 1.0.3127.0 #
(build number 3127)

Complete list of changes of version 1.0.3127.0

  • FTP: Fixed a bug introduced in the last release that caused a bad InvalidOperationException to be thrown when FTP server reported an error during upload.
  • SFTP: GetList, GetRawList and GetNameList enhanced to support wildcards. However, they are processed at the client side because SFTP can't do that at the protocol level.
  • SSH Core: Fixed a problem in RSA private key reader that caused an error with some keys.
  • SSH Core: Enhanced packet reader to support oversized SSH packets.

2008-06-14 Version 1.0.3087.0 #
(build number 3087)

Complete list of changes of version 1.0.3087.0

  • FTP: Finished property added to FtpTranferProgressEventArgs class.
  • FTP: New variants of GetDownloadStream and GetUploadStream added.
  • FTP: New tutorial for file transfer resume functionality.
  • FTP: Added detection for SFTP and SSH servers that are often mistaken forh SFTP to produce better exception messages. FTP servers in wrong modes are also detected.
  • FTP: Fixed a bug that caused the DoNotDetectFeatures option to fail.
  • FTP: Added hostname validity checking to Connect method.
  • FTP: Added support for unusual way of data channel SSL initialization used by XFB Gateway FTP Server.
  • SecureSocket: Fixed a bug that caused data loss when a TLS/SSL connection was closed in a certain way.
  • ProxySocket: New ISocket interface to make it possible to easily implement custom transport layers.
  • ProxySocket: Fixed an unhandled exception that occured during a failed connection to a proxy specified by an IP address.
  • SFTP: Enhanced initial folder detection to be compatible with more servers.
  • SFTP: Added detection for FTP and SSL servers that are often mistaken with SFTP to produce better exception messages.
  • SFTP: Fixed incorrect ChangeDirectory method behavior with empty path argument.
  • SFTP: Fixed a problem that caused SftpException.Status property to have a incorrect value in some cases.
  • SFTP: Added hostname validity checking to Connect method.
  • SFTP: Added experimental support for CR/CRLF conversion of text files.

2007-12-06 Version 1.0.2896.0 #
(build number 2896)

Complete list of changes of version 1.0.2896.0

  • All: Packages for .NET 3.5 and Visual Studio 2008 now available.
  • FTP: Added support for IBM 4690 file and directory listing format.
  • FTP: Fixed several bugs in MODE Z (compressed transfers) code.
  • FTP: Fixed several bugs in MODE B (block transfer) code.
  • FTP: Fixed a bug that caused an invalid exception to be raised on specific type of transfer failures.

2007-11-11 Version 1.0.2871.0 #
(build number 2871)

Complete list of changes of version 1.0.2871.0

  • FTP: Support for MODE B (block mode) with MS FTP7 that makes it possible to re-use a single data connection for multiple transfers.
  • FTP: Experimental support for MODE Z (data transfer compression) added to .NET 2.0 build.
  • FTP: Support for HOST command (multiple virtual FTP hosts on a single IP address). (Disabled by default).
  • FTP: Data channel now maintains a separate session from control channel.
  • SecureSocket: Added built-in PFX-based client certificate request handler.
  • SecureSocket: Fixed a bug in the negotiation part of the TlsSocket class that caused problems when handling large packets.
  • SFTP: Fixed a bug in GetInfo and GetFileLength methods that caused an invalid length to be reported for files larger than 4GB.

2007-08-30 Version 1.0.2800.0 #
(build number 2800)

Complete list of changes of version 1.0.2800.0

  • FTP: Added Bandwidth throttling support - MaxUploadSpeed and MaxDownloadSpeed properties.
  • FTP: Added CRC32, MD5 and SHA-1 checksum support - GetSupportedChecksums, CalculateLocalChecksum (static) and GetChecksum methods.
  • FTP: GetCurrentDirectory enhanced to support another non-standard reply format.
  • FTP: Added FtpOptions.EnableMultipleBlockingCalls option to change the way multiple concurrent calls are handled.
  • FTP: Added FtpOptions.PauseBeforeUploadClose option to enable workaround for a problem of a missing last data block before SSL data channel close.
  • FTP: Added workaround for several MS FTP7 Beta problems.
  • SecureSocket: Fixed a bug in the server-side TLS/SSL code that caused a SSL2-style ClientHello message to be parsed incorrectly.
  • SFTP: Default command and response encoding changed to Encoding.Default instead of standard UTF-8, because a survey of SFTP servers showed that none of them in fact uses UTF-8.
  • SFTP: Added support for authentication using both username/password and public key at the same time.

2007-05-24 Version 1.0.2700.0 #
(build number 2700)

Complete list of changes of version 1.0.2700.0

  • FTP: Added support for direct server-to-server transfers, also known as FXP! Check out the new CopyToAnotherServer method.
  • FTP: Added ListItemReceived event. This makes it possible to display the list items as they are received, to filter them or to abort the transfer based on previously received items.
  • FTP: NameList added to FtpListingType.
  • FTP: SetTransferType/BeginSetTransferType/EndSetTransferType methods were marked as obsolete. Please use the TransferType property instead.
  • FTP: Added support for DrFTPD's PRET command.
  • FTP: Added a workaround for occasional problems with uploads to GlobalScape FTP Server using TLS/SSL in .NET CF.
  • SFTP: Added ListItemReceived event. This makes it possible to display the list items as they are received, to filter them or to abort the transfer based on previously received items.
  • SFTP: Response receive buffer enlarged to support messages that are slightly over the maximum allowed length, and better error reporting for those that are too large.
  • SFTP: Added another workaround for WeOnlyDo's wodFTPD (FreeFtpD) server that is unable to report the correct file datetime if the local and remote time zones are not the same.

2007-04-20 Version 1.0.2666.0 #
(build number 2666)

Complete list of changes of version 1.0.2666.0

  • FTP: Added SetFileDateTime method.
  • FTP: Added FileExists and DirectoryExists methods. These simple operations are very hard to achieve using the FTP protocol and we use a combination of several commands to achieve the desired functionality.
  • FTP: Added DataPortRange property to specify local data port range for active and passive mode transfers.
  • FTP: GetFile/PutFile methods refactorred to use the same infrastructure as GetDownloadStream/GetUploadStream methods.
  • FTP: GetList method optimized to parse the list on-the-fly, resulting in enhanced speed.
  • FTP: Removed unnecessary control channel checking code that caused a noticeable slowdown of data transfers.
  • FTP: Fixed a bug in MLSD list parser - date/time was treated as local time.
  • FTP: In active mode, when waiting for the server to connect, error response is now processed as soon as it arrives, without waiting for the connection attempt to time out.
  • FTP: GetConnectionState no longer fails on disconnected objects.
  • SecureSocket: Speed drop caused by the data receiving loop introduced in the previous build was fixed.
  • SFTP: Added SetFileDateTime method.
  • SFTP: Added FileExists and DirectoryExists methods.
  • SFTP: Added workaround to GetInfo method for WeOnlyDo SFTP server that reports missing files as access denied.
  • SFTP: GetConnectionState no longer fails on disconnected objects.
  • SFTP: Added GetUploadStream and GetDownloadStream methods for stream-based remote file access.

2007-03-06 Version 1.0.2621.0 #
(build number 2621)

Complete list of changes of version 1.0.2621.0

  • FTP: Enhanced handling of uploads terminated by the server. More meaningful exceptions are now reported.
  • FTP: Compatibility enhancements in download aborting code.
  • FTP: Fixed a bug that caused the Close method of the Stream returned by GetDownloadStream to fail with some servers on fast networks.
  • FTP: Fixed a minor bug in FtpResponse class.
  • FTP: IPv6 support with .NET Framework 1.1/2.0/3.0 and .NET Compact Framework 2.0.
  • SecureSocket: New refactorred TLS/SSL core introduced.
  • SFTP: IPv6 support with .NET Framework 1.1/2.0/3.0 and .NET Compact Framework 2.0.

2007-01-11 Version 1.0.2567.0 #
(build number 2567)

Complete list of changes of version 1.0.2567.0

  • FTP: Fixed a bug in the Close method of the stream returned by GetUploadStream and GetDownloadStream method.
  • FTP: Rebex Secure FTP renamed to Rebex FTP/SSL in order to avoid confusion with Rebex SFTP.
  • SFTP: Added support for RSA and DSA public key authentication.
  • SFTP: Added workaround for ShellFTP server that has a bad habit of dropping SSH sessions after the SFTP session is closed.

2006-12-12 Version 1.0.2537.0 #
(build number 2537)

Complete list of changes of version 1.0.2537.0

  • FTP: Fixed bad ArgumentExceptions in Ftp.Connect and FtpList.GetFiles methods.
  • SFTP: Initial public release.

2006-11-27 Version 1.0.2522.0 #
(build number 2522)

Complete list of changes of version 1.0.2522.0

  • FTP: GetUploadStream/GetDownloadStream methods optimized. They no longer use a background thread and should be faster and more reliable.
  • SecureSocket: Fixed a bug in the Compact Framework version that caused an unnecessary slowdown when using SSL/TLS.

2006-10-18 Version 1.0.2482.0 #
(build number 2482)

Complete list of changes of version 1.0.2482.0

  • FTP: Default transfer mode is now binary.
  • FTP: Added setter to TransferType property, making SetTransferType method obsolete.
  • FTP: Added CheckConnectionState/GetConnectionState methods to check the state of the connection without sending any command to the server.
  • FTP: MLSD file and directory listing parser is now able to parse legacy mlst-05 style listings.
  • FTP: Added UploadBufferLength property to manipulate the size of the upload bufffer.
  • FTP: Added a workaround to the CF version for a transfer problem that often occurs when using ActiveSync to connected to a FTP server running on the same machine as ActiveSync. This makes the IgnorePassiveModeAddress option unnecessary in these cases.
  • FTP: The workaround for legacy FTP servers that don't understand 'PBSZ' command was extended to cover sessions explicitly secured using 'AUTH SSL' command. It only used to apply to implicitly secured FTP sessions.

2006-09-15 Version 1.0.2449.0 #
(build number 2449)

Complete list of changes of version 1.0.2449.0

  • FTP: Fixed a bug in the VB.NET version of WinFormGet sample that made it fail in .NET 2.0.
  • FTP: Fixed a minor bug in WinFormClient sample that made it possible for ClearCommandChannel command to be called for unsecured connections.

2006-09-05 Version 1.0.2439.0 #
(build number 2439)

Complete list of changes of version 1.0.2439.0

  • SecureSocket: Several TLS/SSL optimization changes.
  • ProxySocket: Added support for NTLM authentication through HTTP CONNECT proxies.

2006-08-25 Version 1.0.2428.0 #
(build number 2428)

Complete list of changes of version 1.0.2428.0

  • FTP: Fixed a bug that made the VMS file and directory listing parser fail in rare circumstances.
  • FTP: Added IgnorePassiveModeAddress option as a workaround for FTP servers or firewalls that instruct the client to connect to an unaccessible IP address when initializing passive mode data connection.
  • FTP: Fixed a bug in the finalizer that could cause an exception when the Ftp object using TLS/SSL was finalized.
  • FTP: Added workaround for FileZilla FTP server. FileZilla FTP server is seriously broken and reports an error with 25-50% probability when an upload using TLS/SSL is finished. (This also happens when its own FTP client is used.)
  • SecureSocket: Fixed a bug that could cause a failure or timeout on extremely fast connections.

2006-07-10 Version 1.0.2382.0 #
(build number 2382)

Complete list of changes of version 1.0.2382.0

  • FTP: File and directory listings parser was optimized, it is now much faster.
  • FTP: SupportedExtensions and EnabledExtensions added to make it possible to determine and enable/disable FTP protocol extensions.
  • FTP: Support for MLSD file and directory listings added. GetList now uses this as default on servers that support this extension.
  • FTP: The LF character is now treated as an end-of-line marker, just like CRLF sequence, to enable Rebex FTP to work with buggy servers that send LF instead of CRLF.
  • SecureSocket: Fixed a bug that caused the connection not to be closed correctly under special circumstances.
  • ProxySocket: Fixed a bug that caused the proxy password to be ignored (since build 2305).

2006-06-12 Version 1.0.2354.0 #
(build number 2354)

Complete list of changes of version 1.0.2354.0

  • FTP: Server feature detection added (the FEAT command). Can be disabled using DoNotDetectFeatures option for complete compatibility with previous versions.
  • FTP: Added workaround for Nofeel FTP Server in TLS/SSL mode that is unable to handle the final handshake message and first block of data in the same packet.
  • SecureSocket: Fixed a bug that caused the connection not to be closed correctly if the server ignores TLS/SSL close notifications.

2006-04-24 Version 1.0.2305.0 #
(build number 2305)

Complete list of changes of version 1.0.2305.0

  • FTP: Version numbering scheme changed.
  • FTP: DefaultPort constant with a value of 21 added to Ftp class.
  • FTP: Custom directory list parser is now allowed to set the FtpItem to null, which causes the line not to be parsed.
  • FTP: Internal asynchronous methods framework upgraded to the latest version.
  • FTP: Several missing connection state checks added.
  • FTP: Most ArgumentExceptions enhanced and some missing added.
  • FTP: Overall code beautification.
  • FTP: Added TimeoutAsynchronousMethods option to make asynchronous methods optionally time out in the same way the synchronous methods do. (By default, only synchronous methods time out.)
  • FTP: Size of sent blocks in .NET Compact Framework changed to 1460, which seems to be more compatible.
  • FTP: ResumableClient sample added to Compact Framework version.
  • FTP: A .NET Compact Framework version of Rebex FTP/SSL is now available as well.
  • SecureSocket: Changes for compatibility with .NET Compact Framework's implementation of System.Net.Sockets.

2005-11-14 Version 1.0.19.0 #
(build number 19)

Complete list of changes of version 1.0.19.0

  • FTP: FtpException is now based on Exception instead of InvalidOperationException.
  • FTP: FtpList is now serializable.
  • FTP: Fixed a bug that caused the PutUniqueFile method to throw an exception.
  • FTP: Added several COM-interop related attributes to some classes to allow basic FTP functionality to be used through COM.
  • FTP: Disconnect method changed to not throw an exception unless another operation is in progress to reflect the way most people use this method.
  • FTP: Added KeepAliveDuringTransferInterval property to allow specifying the interval for KeepAliveDuringTransfer option.
  • FTP: Behavior of Begin.../End... methods changed so that a call to End... is required after an end of the operation prior to additional calls to Begin... methods.
  • FTP: Ftp properties IsSecured, TlsSocket, LocalEndPoint and RemoreEndPoint now LocalEndPoint and RemoreEndPoint now throw InvalidOperationException when not connected.
  • FTP: Added SendDataAsynchronously option to upload data using BeginSend/EndSend instead of Send to deal with hanging Send on some Windows Mobile devices.
  • FTP: The component and samples support .NET 2.0 and Visual Studio .NET 2005.
  • FTP: Fixed a missing Data property in FtpTlsDebugEventArgs class.
  • FTP: Added ForceSilentCcc option to deal with buggy FTP servers that have a habit of not sending CloseNotify messages while shutdowning SSL after a response to CCC command.
  • FTP: Fixed a bug that caused the Connect or Secure method to close the connection if the FTP server replies to AUTH SSL command by an obsolete 3xx response.
  • FTP: BeginClearCommand method now actually returns the IAsyncResult.
  • FTP: TlsDebug event is now being called from the same thread that the current operation runs in.
  • SecureSocket: Added new TlsDebugEventType UnexpectedException for easier handling of unexpected exceptions thrown from inside the SSL/TLS code.
  • SecureSocket: Added SilentUnprotect option to enable shutdown of SSL channel without sending the CloseNotify message. Needed to deal with buggy SSL implementations.
  • SecureSocket: Added DoNotBufferDate option for enhanced control over the SSL channel.
  • SecureSocket: Minor internal changes towards the forthcoming Compact Framework support.

2005-07-29 Version 1.0.18.0 #
(build number 18)

Complete list of changes of version 1.0.18.0

  • FTP: Added ClearCommandChannel method to revert from protected to unprotected control channel.
  • FTP: Component doesn't assume anything about the protection state upon connection, which makes it compatible with Covalent FTP Server.
  • FTP: Enhancements in unix file list parser to support more variants of unix file listings.
  • FTP: Added KeepAliveDuringTransfer option to deal with buggy firewalls that have a habit of terminating idle control connection during long file transfers.
  • FTP: FtpWebRequest.GetResponse now returns an empty response for FTP upload instead of throwing an exception.
  • FTP: Compact Framework FTP running on full .NET now sends TCP signals with ABOR command during transfer.
  • FTP: Removed workaround for ActiveSync (prior to build 4034) bug from the CF version that made it impossible to close data connections successfully.
  • FTP: Changes to enable C# 2.0 compilation with no warnings.
  • FTP: Trial version for .NET Compact Framework now works with .NET CF 2.0.
  • FTP: Exception handling code in several places cleaned a bit. Other minorchanges. Few lines of unnecessary code removed.
  • FTP: 'Cannot change state' exception messages modified to be more understandable.
  • FTP: Fixed a bug that caused the component not to detect closed control connection in some cases.
  • FTP: Asynchronous method framework enhanced to allow null arguments to be passed to asynchronous Ftp methods.
  • FTP: FtpException, ProxySocketException, FtpProxy, FtpItem and FtpList classes are serializable.
  • SecureSocket: Added TlsSocket.Unprotect method to allow reverting back from TLS to unencrypted socket.
  • ProxySocket: ProxySocketException, FtpProxy classes are serializable.

2004-12-08 Version 1.0.17.0 #
(build number 17)

Complete list of changes of version 1.0.17.0

  • FTP: First release of FTP over TLS/SSL.

2004-11-10 Version 1.0.16.0 #
(build number 16)

Complete list of changes of version 1.0.16.0

  • FTP: Fixed a bug that caused Timeout exception to be thrown instead of OperationAborted exception in special circumstances.
  • FTP: List parser understands a rare variant of Unix directory listing with interchanged month and day parts.
  • FTP: Ftp.Disconnect method always closes the connection, even if the object is not in ready state.
  • ProxySocket: Fixed a bug in Socks5 authentication code (incorrect version in authentication messages).

2004-09-23 Version 1.0.15.0 #
(build number 15)

Complete list of changes of version 1.0.15.0

  • FTP: Fixed a bug that caused the component to remain in a wrong state when disconnected by the server.

2004-09-01 Version 1.0.14.0 #
(build number 14)

Complete list of changes of version 1.0.14.0

  • FTP: Underlying locking/unlocking/async/aborting code fixed to get rid of 'Another operation is pending' exception after timeouts.
  • FTP: Abort method can be called at any time, even inside callbacks.
  • FTP: ChangeDirectory accepts an empty path.
  • FTP: Assembly have been marked as CLS-compliant.
  • ProxySocket: Fixed a bug in ProxySocket's Accept method that could cause active mode transfers to hang under rare circumstances with some servers
  • ProxySocket: Assembly have been marked as CLS-compliant.

2004-04-02 Version 1.0.13.0 #
(build number 13)

Complete list of changes of version 1.0.13.0

  • ProxySocket: Lots of changes and improvements to the proxy code.
  • ProxySocket: GetAddressLong and GetAddressBytes methods added to ProxySocket class to overcome differences between .NET 1.0 and 1.1.
  • FTP: Added a new override for Ftp.GetList method to allow arguments.
  • FTP: Added a new property BytesSinceLastEvent to TransferProgress event. It contains the number of bytes transferred since the last call.
  • FTP: Enhancements in file transfer routines, allowing higher transfer rate on high-speed connections.
  • FTP: All references to obsolete IPAddress.Address in Socks4/Socks5 and FTP code replaced either with calls to ProxySocket.GetAddressLong or ProxySocket.GetAddressBytes.
  • FTP: All references to DateTime.Now.Ticks replaced by more appropriate Environment.TickCount.
  • FTP: Logoff method was renamed to Reinitialize and a new empty Logoff method was added to solve the confusion it caused.
  • FTP: Fixed a bug that caused TransferProgress event not to be raised with FtpTransferState.None when the transfer is finished.
  • FTP: Fixed problems in trial version key check on PocketPC 2003 emulator.

2003-11-24 Version 1.0.11.0 #
(build number 11)

Complete list of changes of version 1.0.11.0

  • ProxySocket: Enhancement in Available property of the ProxySocket class.
  • FTP: Fixed a bug that caused trial version not to work in ASP.NET with impersonation enabled.

2003-11-07 Version 1.0.10.0 #
(build number 10)

Complete list of changes of version 1.0.10.0

  • ProxySocket: Fixed a bug in synchronous methods of the ProxySocket that caused them to hang.
  • FTP: New overloads for Sort method added to FtpList.
  • FTP: Corrected the Version property of the Ftp class that returned wrong version number.
  • FTP: No IP addresses are resolved using DNS now.

2003-11-01 Version 1.0.9.0 #
(build number 9)

Complete list of changes of version 1.0.9.0

  • ProxySocket: Assembly divided into two parts: FTP and Proxy Socket.
  • FTP: Tested with Mono 0.28.
  • FTP: Event handlers can now also be used for FtpWebRequest.
  • FTP: Fixed a bug that could cause a file transfer to fail with some servers and hang under certain circumstances.
  • FTP: Fixed a bug in FTP stream code that caused an exception to be thrown if the transfer was too fast.
  • FTP: More characters are now allowed in remote paths (better interoperability with VMS).
  • FTP: Fixed a bug that caused Ftp class to become unusable if unable to open a local file during asynchronous PutFile or GetFile.
  • FTP: Few missing error messages fixed.
  • FTP: Minor fixes in FtpProxy class.
  • FTP: Server compatibility enhancements in data transfer and aborting code.

2003-09-01 Version 1.0.8.0 #
(build number 8)

Complete list of changes of version 1.0.8.0

  • FTP: New overloads for GetNameList and GetRawList methods added.

2003-08-28 Version 1.0.7.0 #
(build number 7)

Complete list of changes of version 1.0.7.0

  • FTP: Many enhancements in the underlying proxy code.
  • FTP: Abort command is more reliable.
  • FTP: Large number of smaller cosmetic changes in the code.
  • FTP: Changes towards better portability.

2003-08-20 Version 1.0.6.0 #
(build number 6)

Complete list of changes of version 1.0.6.0

  • FTP: Fixed a bug in HttpConnect proxy code that caused the beginning of the data stream to be discarded under certain circumstances.

2003-08-14 Version 1.0.5.0 #
(build number 5)

Complete list of changes of version 1.0.5.0

  • FTP: Fixed a bug that caused timeout with Microsoft ISA server (Socks4a + active mode only).
  • FTP: Fixed a misspelled error id (Socked.Timeout instead of Socket.Timeout) in proxy code. It caused the misspelled id to be used as an exception message instead of the real description.
  • FTP: Compatibility enhancements of Abort code - now compatible withGlobalScape FTP Server.

2003-08-12 Version 1.0.4.0 #
(build number 4)

Complete list of changes of version 1.0.4.0

  • FTP: Minor bug fixed in EPLF list parser (invalid handling of dates > 2038).
  • FTP: Fixed a bug that caused an unexpected exception to be thrown when calling Ftp.Connect with an empty hostname.

2003-07-03 Version 1.0.2.0 #
(build number 2)

Complete list of changes of version 1.0.2.0

  • FTP: Server compatibility enhancements in file transfer aborting code. (There were problems with WarFTPd and some older versions of Serv-U.)
  • FTP: Ftp.Disconnect method now does not throw exception if an error is encountered.
  • FTP: Fixed a bug in Unix list parser that caused an exception while parsing ftp://ftp.netscape.com/dev/.
  • FTP: Fixed a bug in Socks4/Socks5 proxy code that caused an exception to be thrown for some IP addresses.
  • FTP: Removed few lines of unused code in HTTP proxy code.
  • FTP: Default character encoding is now Encoding.Default instead of Encoding.ASCII.
  • FTP: Several bugfixes in WinFormClient sample.
  • FTP: ConsoleClient code sample now supports resuming aborted transfers and uploading directory trees.

2003-04-14 Version 1.0.1.0 #
(build number 1)

Complete list of changes of version 1.0.1.0

  • FTP: Initial release.