(Delphi ActiveX) Http Digest Authentication

Demonstrates the DigestAuth property to do HTTP Digest Authentication.

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
http: TChilkatHttp;
jsonResponse: WideString;

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

http := TChilkatHttp.Create(Self);

// To use HTTP Digest Authentication:
http.Login := 'myLogin';
http.Password := 'myPassword';
http.DigestAuth := 1;

// 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 = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Response status code: ' + IntToStr(http.LastStatus));

Memo1.Lines.Add(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"
// }
end;