(Delphi DLL) POST application/x-www-form-urlencoded using REST API

Demonstrates how to send a POST with query params (x-www-form-urlencoded) using the Chilkat REST object.

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, Rest;

...

procedure TForm1.Button1Click(Sender: TObject);
var
rest: HCkRest;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
success: Boolean;
responseStr: PWideChar;

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

rest := CkRest_Create();

// This example will send to https://www.chilkatsoft.com/echoPost.asp

// Make the initial connection (without sending a request yet).
bTls := True;
port := 443;
bAutoReconnect := True;
success := CkRest_Connect(rest,'www.chilkatsoft.com',port,bTls,bAutoReconnect);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// Provide query params.
CkRest_AddQueryParam(rest,'firstName','John');
CkRest_AddQueryParam(rest,'lastName','Doe');
CkRest_AddQueryParam(rest,'company','Bisco Bits Ltd.');

responseStr := CkRest__fullRequestFormUrlEncoded(rest,'POST','/echoPost.asp');
if (CkRest_getLastMethodSuccess(rest) <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// When successful, the response status code will equal 200.
if (CkRest_getResponseStatusCode(rest) <> 200) then
  begin
    // Examine the request/response to see what happened.
    Memo1.Lines.Add('response status code = ' + IntToStr(CkRest_getResponseStatusCode(rest)));
    Memo1.Lines.Add('response status text = ' + CkRest__responseStatusText(rest));
    Memo1.Lines.Add('response header: ' + CkRest__responseHeader(rest));
    Memo1.Lines.Add('response body (if any): ' + responseStr);
    Memo1.Lines.Add('---');
    Memo1.Lines.Add('LastRequestStartLine: ' + CkRest__lastRequestStartLine(rest));
    Memo1.Lines.Add('LastRequestHeader: ' + CkRest__lastRequestHeader(rest));
    Exit;
  end;

Memo1.Lines.Add(responseStr);
Memo1.Lines.Add('Success.');

CkRest_Dispose(rest);

end;