Delphi indy send stream to client - delphi

Question

I am new with indy servers and so I'm struggling for this simple task. I have to create a server and upload a little file; its size is always 128 bytes. Then when someone opens the homepage of the server the file is sent automatically. So:
Upload a file (the one that is 128 bytes) on the disk
Open a browser like Firefox
Type the url (below you can see that I've set 127.0.0.1:798) and when you press enter there is a white page but a dialog appears asking you to download the file.
I have written this code so far:
procedure TForm1.Button1Click(Sender: TObject);
begin
// IP = 127.0.0.1:798 (port is 798)
IdTCPServer1.Active := true;
Memo1.Lines.Add('Server started at: ' + TimeToStr(Now) + slinebreak);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
IdTCPServer1.Active := false;
Memo1.Lines.Add('Server stopped at: ' + TimeToStr(Now));
end;
procedure TForm1.IdTCPServer1Execute(AContext: TIdContext);
var a: TFileStream;
begin
a := TFileStream.Create('C:\Users\defaulr.user\Desktop\datfile.pkm', fmOpenWrite);
AContext.Connection.IOHandler.Write(a);
end;
This is the form:
Start is Button1 and End is Button2. As you can see I am loading in a stream the file and then I try to send it as output when I open the page. Is this the proper way to do it?

Answer 1

Since you are accessing the file via a web browser, you should be using TIdHTTPServer instead of TIdTCPServer:
procedure TForm1.Button1Click(Sender: TObject);
begin
// IP = 127.0.0.1:798 (port is 798)
IdHTTPServer1.Active := true;
Memo1.Lines.Add('Server started at: ' + TimeToStr(Now));
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
IdHTTPServer1.Active := false;
Memo1.Lines.Add('Server stopped at: ' + TimeToStr(Now));
end;
// TIdHTTPServer.OnCommandGet event handler...
procedure TForm1.IdHTTPServer1CommandGet(AContext: TIdContext;
ARequestInfo: TIdHTTPRequestInfo; AResponseInfo: TIdHTTPResponseInfo);
begin
if ARequestInfo.Document = '/' then
begin
AResponseInfo.ResponseNo := 200;
AResponseInfo.ServeFile(AContext, 'C:\Users\defaulr.user\Desktop\datfile.pkm');
// alternatively:
// AResponseInfo.SmartServeFile(AContext, ARequestInfo, 'C:\Users\defaulr.user\Desktop\datfile.pkm');
end else
AResponseInfo.ResponseNo := 404;
end;