System.Net.HTTPClientComponent

[Uwe Raabe]

Also hier läuft das ohne Probleme (mit einfacherer Lösung für Stream zu String):

Delphi-Quellcode:

var
  AHTTPClient : TNetHTTPClient;
  AResponseStream : TStringStream;
  AString : String;
begin
  AHTTPClient := TNetHTTPClient.Create(nil);
  try
    AResponseStream := TStringStream.Create;
    try
      AHTTPClient.Get('https://de.wikipedia.org/wiki/Wikipedia:Hauptseite', AResponseStream);
      AString := AResponseStream.DataString;
    finally
      AResponseStream.Free;
    end;
  finally
    AHTTPClient.Free;
  end;
  Memo1.Text := AString;
end;