Delphi and C++ Builder components to enable applications interact with FTP, and HTTP/HTTPS protocols to access Internet resources.

FTP, HTTP and HTTPS protocols supported
well suited for accessing REST services
uses standard Windows WinINet API
available for Delphi/C++ Builder 5 - 10.3 and Lazarus 1.8.4
source code included in registered version
royalty free distribution

FAQ

How can I obtain redirected url?

Use INetHttp.OnCallback event:
procedure TForm.INetHttpCallback(Sender: TObject; Status: Integer; Information: Pointer; InformationLength: Integer);
begin
  if Status = INTERNET_STATUS_REDIRECT then
    ShowMessage('Redirect to ' + PAnsiChar(Information));
end;

How can I obtain complete response headers?

ShowMessage(INetHttp.Headers[heRawHeadersCrLf]);

How can I avoid "Error 12152: The server returned an invalid or unrecognized response" when using HTTPS protocol?
Set flSecure flag in INetHttp.Flags property.

How can I avoid "400 Bad Request - The plain HTTP request was sent to HTTPS port" when using HTTPS protocol?
Set flSecure flag in INetHttp.Flags property.

Only for V.I.P