(Delphi ActiveX) Transition from Http.PostUrlEncoded to Http.HttpReq

Provides instructions for replacing deprecated PostUrlEncoded method calls with HttpReq.

Sends the following raw HTTP request:

POST /echoPost.asp HTTP/1.1
Host: www.chilkatsoft.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 50

company=example&ip=111.111.111.111&url=example.com

Note: This example requires Chilkat v11.0.0 or greater.

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
success: Integer;
http: TChilkatHttp;
url: WideString;
req: TChilkatHttpRequest;
responseObj: IChilkatHttpResponse;
req2: TChilkatHttpRequest;
resp: TChilkatHttpResponse;

begin
success := 0;

http := TChilkatHttp.Create(Self);

url := 'https://www.chilkatsoft.com/echoPost.asp';

req := TChilkatHttpRequest.Create(Self);
req.AddParam('company','example');
req.AddParam('ip','111.111.111.111');
req.AddParam('url','example.com');

// ------------------------------------------------------------------------
// The PostUrlEncoded method is deprecated:

responseObj := http.PostUrlEncoded(url,req.ControlInterface);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// ...
// ...

// ------------------------------------------------------------------------
// Do the equivalent using HttpReq.
// Your application creates a new, empty HttpResponse object which is passed 
// in the last argument and filled upon success.

req2 := TChilkatHttpRequest.Create(Self);
req2.AddParam('company','example');
req2.AddParam('ip','111.111.111.111');
req2.AddParam('url','example.com');

req2.HttpVerb := 'POST';
req2.ContentType := 'application/x-www-form-urlencoded';

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpReq(url,req2.ControlInterface,resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// Results are contained in the HTTP response object...
end;