How to set custom HOST header with TIdHTTP

[tolisoft]

Hello Colleagues,
I want to set custom Host header with TIdHTTP component but I did not have luck to do is. At the moment I am trying something like:

Code: [Select]

    HttpClient:=TidHTTP.Create(nil);
    HttpClient.HTTPOptions := [];
    Response := TStringList.Create;
    success := True;

    if HostHeader.Text <> '' then
        HttpClient.Request.CustomHeaders.Values['Host'] := HostHeader.Text;

    try
        response.Text := HttpClient.Get(SrvAddrEdit.text + '?supported_flags=supported_flags');
    except
        ShowMessage('Cannot read from the server!');
        success := False;
    end;             

I am using wireshark and I sniff the traffic so custom Host header is missing in http header. Maybe I am not setting it correctly.

What is the right way to set custom Host header for this http request?