(Delphi DLL) PayPal PayFlowPro - Send Transaction to Server

Sends a simple transaction to the Gateway server.

For more information, see https://developer.paypal.com/docs/payflow/integration-guide/simple-transaction

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, Http, HttpRequest, HttpResponse;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
success: Boolean;
req: HCkHttpRequest;
resp: HCkHttpResponse;

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

http := CkHttp_Create();

// Implements the following CURL command:

// curl https://pilot-payflowpro.paypal.com -d PARTNER=PayPal -d VENDOR=zzz -d USER=zzz -d PWD=zzzzz -d TRXTYPE=S -d AMT=40 -d CREATESECURETOKEN=Y -d SECURETOKENID=XXXEFF0A-XXXX-4585-XXXX-B763B1F1XXXX

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

req := CkHttpRequest_Create();
CkHttpRequest_putHttpVerb(req,'POST');
CkHttpRequest_putPath(req,'/');
CkHttpRequest_putContentType(req,'application/x-www-form-urlencoded');
CkHttpRequest_AddParam(req,'PARTNER','PayPal');
CkHttpRequest_AddParam(req,'VENDOR','zzz');
CkHttpRequest_AddParam(req,'USER','zzz');
CkHttpRequest_AddParam(req,'PWD','zzzzz');
CkHttpRequest_AddParam(req,'TRXTYPE','S');
CkHttpRequest_AddParam(req,'AMT','40');
CkHttpRequest_AddParam(req,'CREATESECURETOKEN','Y');
CkHttpRequest_AddParam(req,'SECURETOKENID','XXXEFF0A-XXXX-4585-XXXX-B763B1F1XXXX');

resp := CkHttp_PostUrlEncoded(http,'https://pilot-payflowpro.paypal.com',req);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add('Status code: ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
Memo1.Lines.Add('Response body:');
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

CkHttpResponse_Dispose(resp);

CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);

end;