(Delphi ActiveX) REST File Upload (multipart/form-data)

Demonstrates how to upload a file using multipart/form-data.

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
rest: TChilkatRest;
bTls: Integer;
port: Integer;
bAutoReconnect: Integer;
success: Integer;
fileStream: TChilkatStream;
responseBody: WideString;

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

rest := TChilkatRest.Create(Self);

// Connect to the HTTP server using TLS.
bTls := 1;
port := 443;
bAutoReconnect := 1;
// Make sure to replace "www.chilkatsoft.com" with your domain..
success := rest.Connect('www.chilkatsoft.com',port,bTls,bAutoReconnect);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

fileStream := TChilkatStream.Create(Self);
fileStream.SourceFile := 'qa_data/jpg/starfish.jpg';

rest.AddHeader('Content-Type','multipart/form-data');

rest.PartSelector := '1';
rest.AddHeader('Content-Type','image/jpg');
rest.AddHeader('Content-Disposition','form-data; name="filename"; filename="starfish.jpg"');
rest.SetMultipartBodyStream(fileStream.ControlInterface);
rest.PartSelector := '0';

responseBody := rest.FullRequestMultipart('POST','/the_uri_path_to_receive_the_upload');
if (rest.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

if (rest.ResponseStatusCode <> 200) then
  begin
    Memo1.Lines.Add('Received error response code: ' + IntToStr(rest.ResponseStatusCode));
    Exit;
  end;

Memo1.Lines.Add('File uploaded');
end;