107 lines
2.6 KiB
Plaintext
107 lines
2.6 KiB
Plaintext
{
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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 1.2 2004.02.03 4:17:18 PM czhower
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For unit name changes.
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Rev 1.1 2003.10.19 12:10:00 AM czhower
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Changed formula to be accurate with smaller numbers.
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Rev 1.0 2003.10.18 11:32:00 PM czhower
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Initial checkin
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Rev 1.1 2003.10.14 1:27:16 PM czhower
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Uupdates + Intercept support
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Rev 1.0 2003.10.13 6:40:40 PM czhower
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Moved from root
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Rev 1.0 11/13/2002 07:55:12 AM JPMugaas
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}
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unit IdInterceptThrottler;
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interface
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{$i IdCompilerDefines.inc}
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uses
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IdComponent, IdIntercept, IdGlobal;
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type
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TIdInterceptThrottler = class(TIdConnectionIntercept)
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protected
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FBitsPerSec: Integer;
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FRecvBitsPerSec: Integer;
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FSendBitsPerSec: Integer;
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procedure SetBitsPerSec(AValue: Integer);
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public
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procedure Receive(var ABuffer: TIdBytes); override;
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procedure Send(var ABuffer: TIdBytes); override;
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published
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property BitsPerSec: Integer read FBitsPerSec write SetBitsPerSec;
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property RecvBitsPerSec: Integer read FRecvBitsPerSec write FRecvBitsPerSec;
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property SendBitsPerSec: Integer read FSendBitsPerSec write FSendBitsPerSec;
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end;
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implementation
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uses
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IdAntiFreezeBase, IdException;
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{ TIdInterceptThrottler }
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procedure TIdInterceptThrottler.Receive(var ABuffer: TIdBytes);
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var
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LInterval: Int64;
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begin
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inherited Receive(ABuffer);
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if RecvBitsPerSec > 0 then begin
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LInterval := (Int64(Length(ABuffer)) * 8 * 1000) div RecvBitsPerSec;
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while LInterval > MaxInt do begin
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TIdAntiFreezeBase.Sleep(MaxInt);
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Dec(LInterval, MaxInt);
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end;
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TIdAntiFreezeBase.Sleep(Integer(LInterval));
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end;
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end;
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procedure TIdInterceptThrottler.Send(var ABuffer: TIdBytes);
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var
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LInterval: Int64;
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begin
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inherited Send(ABuffer);
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if SendBitsPerSec > 0 then begin
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LInterval := (Int64(Length(ABuffer)) * 8 * 1000) div SendBitsPerSec;
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while LInterval > MaxInt do begin
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TIdAntiFreezeBase.Sleep(MaxInt);
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Dec(LInterval, MaxInt);
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end;
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TIdAntiFreezeBase.Sleep(Integer(LInterval));
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end;
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end;
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procedure TIdInterceptThrottler.SetBitsPerSec(AValue: Integer);
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begin
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FBitsPerSec := AValue;
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FRecvBitsPerSec := AValue;
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FSendBitsPerSec := AValue;
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end;
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end.
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