(Delphi ActiveX) FTP through HTTP Tunnel (FTP over HTTP Proxy)

Note: This example requires Chilkat v9.5.0.51 or greater.

FTP through an HTTP tunnel (via an HTTP proxy server that supports HTTP tunneling).

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
ftp: TChilkatFtp2;
success: Integer;
localFilename: WideString;
remoteFilename: WideString;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

ftp := TChilkatFtp2.Create(Self);

ftp.Hostname := 'ftp.example.com';
ftp.Username := 'login';
ftp.Password := 'password';

// Set the HTTP proxy server properties.
// This is to connect via HTTP/1.1 using CONNECT method
ftp.HttpProxyHostname := '192.168.1.127';
ftp.HttpProxyPort := 8080;

// If the proxy server requires authentication...
ftp.HttpProxyUsername := 'myProxyUsername';
ftp.HttpProxyPassword := 'myProxyPassword';

// FTP over an HTTP proxy requires that FTP Passive mode be used
// for data transfers. It is not possible to use non-passive (active) mode
// for FTP over HTTP.
ftp.Passive := 1;

// Connect and login to the FTP server.
success := ftp.Connect();
if (success <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

// Change to the remote directory where the file will be uploaded.
success := ftp.ChangeRemoteDir('junk');
if (success <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

// Upload a file.
localFilename := 'c:/temp/hamlet.xml';
remoteFilename := 'hamlet.xml';

success := ftp.PutFile(localFilename,remoteFilename);
if (success <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

success := ftp.Disconnect();

Memo1.Lines.Add('File Uploaded!');
end;