Pascal (Lazarus/Delphi)

Adding Cookies to an HTTP Request

See more HTTP Examples

Demonstrates how to add one or more cookies to an HTTP request. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.HttpRequest,
  Chilkat.HttpResponse;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  req: THttpRequest;
  domain: string;
  port: Integer;
  ssl: Boolean;
  resp: THttpResponse;
  html: string;

begin
  success := False;

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

  http := THttp.Create;

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

  //  Build an HTTP POST request:
  req := THttpRequest.Create;
  req.SetFromUrl('http://www.chilkatsoft.com/echoPost.asp');
  req.HttpVerb := 'POST';

  req.AddParam('param1','value1');
  req.AddParam('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:
  req.AddHeader('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 := THttpResponse.Create;
  success := http.HttpSReq(domain,port,ssl,req,resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

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

  WriteLn('---------------------');

  //  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.  
  http.SetRequestHeader('Cookie','user="mary"; city="Chicago"');

  html := http.QuickGetStr('http://www.w3.org/');
  if (http.LastMethodSuccess <> True) then
    begin
      WriteLn(http.LastErrorText);
    end
  else
    begin
      //  Show the last HTTP request header sent, which should include
      //  our cookies...
      WriteLn(http.LastHeader);
    end;


  http.Free;
  req.Free;
  resp.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.