Delphi ActiveX

User-Agent Header Field in HTTP Requests

The User-Agent header is an HTTP request header that identifies the client software (e.g., web browser, API client, bot, or script) making the request to a server. It provides information about the software, version, and operating system.

This example shows how to set the User-Agent header field.

Delphi ActiveX

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;

begin
http := TChilkatHttp.Create(Self);
http.UserAgent := 'MyApp/3.0';

// ...
// ..
end;