Delphi DLL

Connect to an SSH Server

Demonstrates the Chilkat Ssh.Connect method, which establishes a connection to an SSH server. The first argument is the hostname (a DNS name or a numeric IPv4/IPv6 address) and the second is the TCP port, usually 22. Connecting is the first step; authentication follows before any channels can be opened.

Background: Connect establishes only the SSH transport — the encrypted channel and host-key exchange — but does not log in. An SSH session is always used in stages: connect, authenticate, then open one or more channels for shell, exec, or port-forwarding work. Timeouts and optional SOCKS/HTTP proxying are controlled by the object's properties before this call.

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var
success: Boolean;
ssh: HCkSsh;
sshPort: Integer;

begin
success := False;

//  Demonstrates the Ssh.Connect method, which establishes a connection to an SSH server.  The
//  1st argument is the hostname (a DNS name or numeric IP) and the 2nd is the TCP port.

ssh := CkSsh_Create();

//  Port 22 is the usual SSH port.
sshPort := 22;
success := CkSsh_Connect(ssh,'ssh.example.com',sshPort);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSsh__lastErrorText(ssh));
    Exit;
  end;
Memo1.Lines.Add('Connected to the SSH server.');

//  (Authentication would follow here before opening channels.)

CkSsh_Disconnect(ssh);

CkSsh_Dispose(ssh);