Delphi ActiveX

Clear the SFTP Session Log

Demonstrates the Chilkat SFtp.ClearSessionLog method, which clears the in-memory text stored in the SessionLog property. It takes no arguments.

Background: With session logging enabled, the SessionLog accumulates a running record of the session's activity that is invaluable for diagnosing a failed transfer. Over a long-lived session that log grows unbounded, so clearing it frees memory — and, more usefully, lets you capture the log for one specific operation in isolation by clearing it just before and reading it just after.

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var
success: Integer;
sftp: TChilkatSFtp;
port: Integer;
password: WideString;

begin
success := 0;

//  Demonstrates the SFtp.ClearSessionLog method, which clears the in-memory text stored in the
//  SessionLog property.  It takes no arguments.

sftp := TChilkatSFtp.Create(Self);

//  Connect, authenticate, and initialize the SFTP subsystem.
port := 22;
success := sftp.Connect('sftp.example.com',port);
if (success = 0) then
  begin
    Memo1.Lines.Add(sftp.LastErrorText);
    Exit;
  end;

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
password := 'mySshPassword';

success := sftp.AuthenticatePw('mySshLogin',password);
if (success = 0) then
  begin
    Memo1.Lines.Add(sftp.LastErrorText);
    Exit;
  end;

success := sftp.InitializeSftp();
if (success = 0) then
  begin
    Memo1.Lines.Add(sftp.LastErrorText);
    Exit;
  end;

//  When KeepSessionLog is enabled, the SessionLog property accumulates a record of the session's
//  activity, which is useful for debugging.
sftp.KeepSessionLog := 1;

//  ... perform operations ...

//  Clear the accumulated log, for example before starting a new logical operation whose log you
//  want to capture in isolation.
sftp.ClearSessionLog();
Memo1.Lines.Add('Session log cleared.');

sftp.Disconnect();