90 lines
2.2 KiB
Plaintext
90 lines
2.2 KiB
Plaintext
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{
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$Project$
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$Workfile$
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$Revision$
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$DateUTC$
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$Id$
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This file is part of the Indy (Internet Direct) project, and is offered
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under the dual-licensing agreement described on the Indy website.
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(http://www.indyproject.org/)
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Copyright:
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(c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
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}
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{
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$Log$
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}
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{
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Rev 1.0 2/10/2005 2:26:38 PM JPMugaas
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New UnixTime Service (port 519) components.
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}
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unit IdUnixTimeUDP;
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interface
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{$i IdCompilerDefines.inc}
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uses
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{$IFDEF WORKAROUND_INLINE_CONSTRUCTORS}
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Classes,
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{$ENDIF}
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IdAssignedNumbers, IdTimeUDP, IdUDPClient;
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{
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This is based on a description at
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http://amo.net/AtomicTimeZone/help/ATZS_Protocols.htm#Unix
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UnixTime and UnixTime Protocol
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Unix is an operating system developed in 1969 by Ken Thompson. UnixTime counts
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"epochs" or seconds since the Year 1970. UnixTime recently hit it's billionth
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birthday.
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Because Unix is widely used in many environments, UnixTime was developed into
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a loose simple time protocol in the late 80's and early 90's. No formal
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UnixTime protocol has ever been officially published as an internet protocol -
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until now.
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UnixTime operates on the same UnixTime port - 519. Once a connection is
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requested on this port, exactly like in Time Protocol, the UnixTime value
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is sent back by either tcp/ip or udp/ip. When UDP/IP is used, a small packet
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of data must be received by the server in order to respond in the exact same
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fashion as Time Protocol. The UnixTime is then sent as an unsigned
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"unformatted" integer on the same port.
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}
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type
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TIdUnixTimeUDP = class(TIdCustomTimeUDP)
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protected
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procedure InitComponent; override;
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{$IFDEF WORKAROUND_INLINE_CONSTRUCTORS}
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public
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constructor Create(AOwner: TComponent); reintroduce; overload;
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{$ENDIF}
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published
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property Port default IdPORT_utime;
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end;
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implementation
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uses IdGlobalProtocols;
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{ TIdTUniximeUDP }
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{$IFDEF WORKAROUND_INLINE_CONSTRUCTORS}
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constructor TIdUnixTimeUDP.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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end;
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{$ENDIF}
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procedure TIdUnixTimeUDP.InitComponent;
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begin
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inherited;
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Port := IdPORT_utime;
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FBaseDate := UNIXSTARTDATE;
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end;
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end.
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