(Delphi DLL) Adding Cookies to an HTTP Request

Demonstrates how to add one or more cookies to an HTTP request.

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

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
success: Boolean;
http: HCkHttp;
req: HCkHttpRequest;
domain: PWideChar;
port: Integer;
ssl: Boolean;
resp: HCkHttpResponse;
html: PWideChar;

begin
success := False;

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

http := CkHttp_Create();

// The Cookie header field has this format:
// Cookie: name1=value1 [; name2=value2] ...

// Build an HTTP POST request:
req := CkHttpRequest_Create();
CkHttpRequest_SetFromUrl(req,'http://www.chilkatsoft.com/echoPost.asp');
CkHttpRequest_putHttpVerb(req,'POST');

CkHttpRequest_AddParam(req,'param1','value1');
CkHttpRequest_AddParam(req,'param2','value2');

// To add cookies to any HTTP request sent by a Chilkat HTTP method
// that uses an HTTP request object, add the cookies to the
// request object by calling AddHeader.  

// Add two cookies:
CkHttpRequest_AddHeader(req,'Cookie','user="mary"; city="Chicago"');

// Send the HTTP POST.  
// (The cookies are sent as part of the HTTP header.)

domain := 'www.chilkatsoft.com';
port := 80;
ssl := False;
resp := CkHttpResponse_Create();
success := CkHttp_HttpSReq(http,domain,port,ssl,req,resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// Display the HTML body of the response.
if (CkHttpResponse_getStatusCode(resp) = 200) then
  begin
    // Show the last HTTP request header sent, which should include
    // our cookies...
    Memo1.Lines.Add(CkHttp__lastHeader(http));
  end
else
  begin
    Memo1.Lines.Add('HTTP Response Status = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
  end;

Memo1.Lines.Add('---------------------');

// Some Chilkat HTTP methods do not use an HTTP request object. 
// For these methods, such as for QuickGetStr, cookies (or any HTTP request header) 
// are added by calling SetRequestHeader.  
CkHttp_SetRequestHeader(http,'Cookie','user="mary"; city="Chicago"');

html := CkHttp__quickGetStr(http,'http://www.w3.org/');
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
  end
else
  begin
    // Show the last HTTP request header sent, which should include
    // our cookies...
    Memo1.Lines.Add(CkHttp__lastHeader(http));
  end;

CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
CkHttpResponse_Dispose(resp);

end;