www.pudn.com > Indy_9_00_14_src.zip > IdEchoUDP.pas

{ $HDR$} 
{**********************************************************************} 
{ Unit archived using Team Coherence                                   } 
{ Team Coherence is Copyright 2002 by Quality Software Components      } 
{                                                                      } 
{ For further information / comments, visit our WEB site at            } 
{ http://www.TeamCoherence.com                                         } 
{**********************************************************************} 
{} 
{ $Log:  10149: IdEchoUDP.pas  
{ 
{   Rev 1.0    2002.11.12 10:37:18 PM  czhower 
} 
unit IdEchoUDP; 
 
interface 
uses Classes, IdAssignedNumbers, IdUDPBase, IdUDPClient; 
type 
  TIdEchoUDP = class(TIdUDPClient) 
  protected 
    FEchoTime: Cardinal; 
  public 
    constructor Create(AOwner: TComponent); override; 
    {This sends Text to the peer and returns the reply from the peer} 
    Function Echo(AText: String): String; 
    {Time taken to send and receive data} 
    Property EchoTime: Cardinal read FEchoTime; 
  published 
    property Port default IdPORT_ECHO; 
  end; 
 
implementation 
uses IdGlobal; 
 
{ TIdIdEchoUDP } 
 
constructor TIdEchoUDP.Create(AOwner: TComponent); 
begin 
  inherited Create(AOwner); 
  Port := IdPORT_ECHO; 
end; 
 
function TIdEchoUDP.Echo(AText: String): String; 
var 
  StartTime: Cardinal; 
begin 
  StartTime := GetTickCount; 
  Send(AText); 
  Result := ReceiveString; 
  {This is just in case the TickCount rolled back to zero} 
  FEchoTime :=  GetTickDiff(StartTime,IdGlobal.GetTickCount); 
end; 
 
end.