90 lines
2.3 KiB
Plaintext
90 lines
2.3 KiB
Plaintext
{
|
|
$Project$
|
|
$Workfile$
|
|
$Revision$
|
|
$DateUTC$
|
|
$Id$
|
|
|
|
This file is part of the Indy (Internet Direct) project, and is offered
|
|
under the dual-licensing agreement described on the Indy website.
|
|
(http://www.indyproject.org/)
|
|
|
|
Copyright:
|
|
(c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
|
|
}
|
|
{
|
|
$Log$
|
|
}
|
|
{
|
|
Rev 1.0 2/10/2005 2:26:36 PM JPMugaas
|
|
New UnixTime Service (port 519) components.
|
|
}
|
|
unit IdUnixTimeServer;
|
|
|
|
interface
|
|
|
|
{$i IdCompilerDefines.inc}
|
|
|
|
uses
|
|
{$IFDEF WORKAROUND_INLINE_CONSTRUCTORS}
|
|
Classes,
|
|
{$ENDIF}
|
|
IdAssignedNumbers,
|
|
IdCustomTCPServer,
|
|
IdGlobalProtocols,
|
|
IdTimeServer;
|
|
|
|
{
|
|
This is based on a description at
|
|
http://amo.net/AtomicTimeZone/help/ATZS_Protocols.htm#Unix
|
|
|
|
UnixTime and UnixTime Protocol
|
|
Unix is an operating system developed in 1969 by Ken Thompson. UnixTime
|
|
counts "epochs" or seconds since the Year 1970. UnixTime recently hit it's
|
|
billionth birthday.
|
|
|
|
Because Unix is widely used in many environments, UnixTime was developed into
|
|
a loose simple time protocol in the late 80's and early 90's. No formal
|
|
UnixTime protocol has ever been officially published as an internet protocol -
|
|
until now.
|
|
|
|
UnixTime operates on the same UnixTime port - 519. Once a connection is
|
|
requested on this port, exactly like in Time Protocol, the UnixTime value
|
|
is sent back by either tcp/ip or udp/ip. When UDP/IP is used, a small packet
|
|
of data must be received by the server in order to respond in the exact same
|
|
fashion as Time Protocol. The UnixTime is then sent as an unsigned
|
|
"unformatted" integer on the same port.
|
|
}
|
|
|
|
type
|
|
TIdUnixTimeServer = class(TIdCustomTimeServer)
|
|
protected
|
|
procedure InitComponent; override;
|
|
{$IFDEF WORKAROUND_INLINE_CONSTRUCTORS}
|
|
public
|
|
constructor Create(AOwner: TComponent); reintroduce; overload;
|
|
{$ENDIF}
|
|
published
|
|
property DefaultPort default IdPORT_utime;
|
|
end;
|
|
|
|
implementation
|
|
|
|
{ TIdUnixTimeServer }
|
|
|
|
{$IFDEF WORKAROUND_INLINE_CONSTRUCTORS}
|
|
constructor TIdUnixTimeServer.Create(AOwner: TComponent);
|
|
begin
|
|
inherited Create(AOwner);
|
|
end;
|
|
{$ENDIF}
|
|
|
|
procedure TIdUnixTimeServer.InitComponent;
|
|
begin
|
|
inherited;
|
|
DefaultPort := IdPORT_utime;
|
|
FBaseDate := UNIXSTARTDATE;
|
|
end;
|
|
|
|
end.
|