sgcIndy Features
Enhanced Indy TCP/IP components with OpenSSL 1.1/3.0 support, XOAuth2 authentication, and improved networking for Delphi and Free Pascal.
Enhanced Indy TCP/IP components with OpenSSL 1.1/3.0 support, XOAuth2 authentication, and improved networking for Delphi and Free Pascal.
Bring your Indy applications up to date with the latest OpenSSL libraries and TLS standards.
Full support for OpenSSL 1.1.x with TLS 1.2 and TLS 1.3. Drop-in replacement for the legacy Indy OpenSSL integration.
Support for the latest OpenSSL 3.x series with the new provider architecture, FIPS compliance, and improved cipher suite management.
First-class TLS 1.3 support with 0-RTT resumption, improved handshake performance, and modern cipher suites.
Built-in XOAuth2 support for Gmail, Outlook, and other OAuth 2.0 providers. Authenticate SMTP, IMAP, and POP3 connections with modern OAuth flows.
Improved connection handling, keep-alive management, timeout control, and buffer management over standard Indy components.
sgcIndy is free to use. Compatible with Delphi 7 through RAD Studio 13 and Free Pascal/Lazarus. No license fees or royalties.
Full-featured SSH 2.0 client for secure remote connections. Execute commands, open interactive shells, and set up port forwarding — all over encrypted channels.
TIdSSHClient handles the complete SSH lifecycle: version exchange, key negotiation, user authentication, and channel management. Connect to any SSH server and run commands, open shells, or forward ports with a clean Delphi component API.
var
SSH: TIdSSHClient;
Output: string;
begin
SSH := TIdSSHClient.Create(nil);
try
SSH.Host := 'server.example.com';
SSH.Port := 22;
SSH.Authentication.Username := 'admin';
SSH.Authentication.Password := 'secret';
SSH.Connect;
// Execute a command and get output
Output := SSH.Execute('ls -la /var/log');
Memo1.Text := Output;
SSH.Disconnect;
finally
SSH.Free;
end;
end;Password, public key (RSA, ECDSA, ED25519), and keyboard-interactive methods. Load private keys from PEM files with optional passphrase. Host key verification via OnSSHHostKey event.
Curve25519, ECDH, and Diffie-Hellman key exchange. AES-CTR and AES-GCM ciphers. HMAC-SHA2 message authentication. Configurable algorithm preferences via the Algorithms property.
Open multiple channels over one connection with OpenChannel. Request exec, shell, or subsystem (like SFTP) per channel. Send data, signals, and EOF independently per channel.
Configurable keep-alive interval and max count to detect dead connections. Connect and read timeouts via SSHOptions. Automatic re-keying support via Rekey().
Local-to-remote tunneling with OpenDirectTCPIP. Remote-to-local forwarding with RequestForwarding and CancelForwarding. Tunnel any TCP traffic through the encrypted SSH connection.
OnSSHChannelData for incoming data, OnSSHChannelExitStatus for command results, OnSSHAuthBanner for server banners, and OnSSHError for error handling. Full event-driven architecture.
Secure file transfer over SSH. Upload, download, and manage remote files and directories with progress tracking and full attribute support.
TIdSFTPClient is built on top of TIdSSHClient and handles the SFTP subsystem automatically. It provides a high-level API for all common file operations — no need to manage SSH channels or the SFTP protocol manually.
var
SFTP: TIdSFTPClient;
Items: TIdSFTPDirectoryItems;
i: Integer;
begin
SFTP := TIdSFTPClient.Create(nil);
try
SFTP.Host := 'sftp.example.com';
SFTP.Authentication.Username := 'admin';
SFTP.Authentication.PrivateKeyFile :=
'C:\Keys\id_rsa';
SFTP.Connect;
// Upload a file
SFTP.Put('C:\local\report.pdf',
'/remote/reports/report.pdf');
// List directory
Items := SFTP.ListDirectory('/remote/reports');
for i := 0 to Items.Count - 1 do
Memo1.Lines.Add(Items[i].FileName);
// Download a file
SFTP.Get('/remote/data.csv',
'C:\local\data.csv');
SFTP.Disconnect;
finally
SFTP.Free;
end;
end;Get() downloads remote files to a local path or TStream. Put() uploads from a local path or TStream. Configurable buffer size via SFTPBufferSize for optimal throughput. OnSFTPProgress fires during transfer with bytes transferred, total size, and a Cancel flag.
ListDirectory() returns TIdSFTPDirectoryItems with file name, size, permissions, timestamps, and type for each entry. MakeDirectory() and RemoveDirectory() for folder management. GetCurrentDirectory() returns the remote working path.
Stat() and LStat() retrieve size, permissions, UID/GID, and timestamps. SetStat() modifies remote attributes. FileExists(), DirectoryExists(), and FileSize() for quick checks. Symlink support via Symlink() and ReadLink().
GetFileAsString() reads a remote file directly into a Delphi string. PutFileFromString() writes a string to a remote file. RealPath() resolves relative or symbolic paths to their absolute location on the server.
Inherits all SSH authentication from TIdSSHClient: password, public key (RSA, ECDSA, ED25519), and keyboard-interactive. Set credentials via the Authentication property. OnSSHHostKey event for server verification.
OnSFTPProgress tracks bytes transferred and total size with a Cancel flag to abort transfers. OnSFTPError provides error code and message. OnSFTPStatus for status updates. OnSFTPDirectoryList fires when directory listing completes.