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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Ftp2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
ftp: HCkFtp2;
success: Boolean;
localFilename: PWideChar;
remoteFilename: PWideChar;

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

ftp := CkFtp2_Create();

CkFtp2_putHostname(ftp,'ftp.example.com');
CkFtp2_putUsername(ftp,'login');
CkFtp2_putPassword(ftp,'password');

// Set the HTTP proxy server properties.
// This is to connect via HTTP/1.1 using CONNECT method
CkFtp2_putHttpProxyHostname(ftp,'192.168.1.127');
CkFtp2_putHttpProxyPort(ftp,8080);

// If the proxy server requires authentication...
CkFtp2_putHttpProxyUsername(ftp,'myProxyUsername');
CkFtp2_putHttpProxyPassword(ftp,'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.
CkFtp2_putPassive(ftp,True);

// Connect and login to the FTP server.
success := CkFtp2_Connect(ftp);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

// Change to the remote directory where the file will be uploaded.
success := CkFtp2_ChangeRemoteDir(ftp,'junk');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

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

success := CkFtp2_PutFile(ftp,localFilename,remoteFilename);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

success := CkFtp2_Disconnect(ftp);

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

CkFtp2_Dispose(ftp);

end;