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Получить время с сервера точного времени.

16:05
unit frmMainU;
 
interface
 
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ScktComp, StdCtrls;
 
type
TForm1 = class(TForm)
Memo1: TMemo;
Button1: TButton;
ClientSocket1: TClientSocket;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure ClientSocket1Read(Sender: TObject; Socket: TCustomWinSocket);
procedure ClientSocket1Connect(Sender: TObject;
Socket: TCustomWinSocket);
procedure ClientSocket1Disconnect(Sender: TObject;
Socket: TCustomWinSocket);
private
{ Private declarations }
public
{ Public declarations }
end;
 
var
Form1: TForm1;
 
implementation
 
{$R *.dfm}
 
function ntohl(const value: cardinal): cardinal;
asm
mov edx, eax
mov ecx, eax
shl ecx, 16
and eax, $0000ff00
or eax, ecx
mov ecx, edx
shl eax, 8
and ecx, $00ff0000
shr edx, 16
or ecx, edx
shr ecx, 8
or eax, ecx
end;
 
function TimeZoneBias: Double;
var
ATimeZone: TTimeZoneInformation;
begin
if (GetTimeZoneInformation(ATimeZone) = TIME_ZONE_ID_DAYLIGHT) then
begin
result := ATimeZone.Bias + ATimeZone.DaylightBias;
end
else
begin
result := ATimeZone.Bias + ATimeZone.StandardBias;
end;
Result := Result / 1440;
end;
 
function SecsToTime(ASecs: Cardinal): TDateTime;
const
SECS_PER_DAY = 24 * 60 * 60;
UNIX_OFFSET = 25569;
begin
Result := ntohl(ASecs) / SECS_PER_DAY + encodedate(1900, 1, 1) - TimeZoneBias;
end;
 
procedure TForm1.Button1Click(Sender: TObject);
begin
Memo1.Clear;
memo1.Lines.Add('Connecting to ' + ClientSocket1.Host + '...');
ClientSocket1.Open;
end;
 
procedure TForm1.FormCreate(Sender: TObject);
begin
ClientSocket1.Host := 'time-A.timefreq.bldrdoc.gov';
ClientSocket1.Port := 37;
end;
 
procedure TForm1.ClientSocket1Read(Sender: TObject;
Socket: TCustomWinSocket);
var
buf: Cardinal;
begin
Socket.ReceiveBuf(buf, sizeof(buf));
memo1.Lines.Add(#13#10 + '-----------------------');
memo1.Lines.Add(formatdatetime('dd.mm.yyyy hh:nn:ss', SecsToTime(buf)));
memo1.Lines.Add('-----------------------'#13#10);
end;
 
procedure TForm1.ClientSocket1Connect(Sender: TObject;
Socket: TCustomWinSocket);
begin
memo1.Lines.Add('Connect');
end;
 
procedure TForm1.ClientSocket1Disconnect(Sender: TObject;
Socket: TCustomWinSocket);
begin
memo1.Lines.Add('Disonnect');
end;
 
end.