Lazarus Pascal

Http Digest Authentication

Demonstrates the DigestAuth property to do HTTP Digest Authentication. Lazarus Pascal

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;

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

procedure RunDemo;
var
  http: THttp;
  jsonResponse: string;

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

  http := THttp.Create;

  //  To use HTTP Digest Authentication:
  http.Login := 'myLogin';
  http.Password := 'myPassword';
  http.DigestAuth := True;

  //  If you would like to see the HTTP session log to see how 
  //  HTTP digest authentication worked.
  http.SessionLogFilename := 'c:/temp/qa_output/sessionLog.txt';

  //  Run the test using this URL with the credentials above.  
  //  (Works while httpbin.org keeps the test endpoint available.)
  jsonResponse := http.QuickGetStr('https://httpbin.org/digest-auth/auth/myLogin/myPassword');
  if (http.LastMethodSuccess = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  WriteLn('Response status code: ' + http.LastStatus);

  WriteLn(jsonResponse);

  //  Output:

  //  Response status code: 200
  //  {
  //    "authenticated": true, 
  //    "user": "myLogin"
  //  }

  //  -----------------------------------------------
  //  Here are the contents of the sessionLog.txt

  //  ---- Sending Sat, 30 Aug 2025 11:23:12 GMT ----
  //  GET /digest-auth/auth/myLogin/myPassword HTTP/1.1
  //  Host: httpbin.org
  //  Accept: */*
  //  Accept-Encoding: gzip
  //  
  //  
  //  ---- Received Sat, 30 Aug 2025 11:23:12 GMT ----
  //  HTTP/1.1 401 UNAUTHORIZED
  //  Date: Sat, 30 Aug 2025 11:23:12 GMT
  //  Content-Type: text/html; charset=utf-8
  //  Content-Length: 0
  //  Connection: keep-alive
  //  Server: gunicorn/19.9.0
  //  WWW-Authenticate: Digest realm="me@kennethreitz.com", nonce="fbc6733e2f4d126e7a92d19918f42b0f", qop="auth", opaque="5a14177dc4089cb22c019e6df4fdaadf", algorithm=MD5, stale=FALSE
  //  Set-Cookie: stale_after=never; Path=/
  //  Set-Cookie: fake=fake_value; Path=/
  //  Access-Control-Allow-Origin: *
  //  Access-Control-Allow-Credentials: true
  //  
  //  
  //  ---- Sending Sat, 30 Aug 2025 11:23:12 GMT ----
  //  GET /digest-auth/auth/myLogin/myPassword HTTP/1.1
  //  Host: httpbin.org
  //  Accept: */*
  //  Accept-Encoding: gzip
  //  Authorization: Digest ****
  //  
  //  
  //  ---- Received Sat, 30 Aug 2025 11:23:12 GMT ----
  //  HTTP/1.1 200 OK
  //  Date: Sat, 30 Aug 2025 11:23:13 GMT
  //  Content-Type: application/json
  //  Content-Length: 50
  //  Connection: keep-alive
  //  Server: gunicorn/19.9.0
  //  Set-Cookie: fake=fake_value; Path=/
  //  Access-Control-Allow-Origin: *
  //  Access-Control-Allow-Credentials: true
  //  
  //  {
  //    "authenticated": true, 
  //    "user": "myLogin"
  //  }


  http.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.