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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, IdUDPServer, IdBaseComponent, IdComponent, IdUDPBase,
IdUDPClient, StdCtrls,IdSocketHandle;
type
TForm1 = class(TForm)
IdUDPClient: TIdUDPClient;
IdUDPServer: TIdUDPServer;
cmdSend: TButton;
procedure FormCreate(Sender: TObject);
procedure cmdSendClick(Sender: TObject);
procedure IdUDPServerUDPRead(Sender: TObject; AData: TStream;
ABinding: TIdSocketHandle);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
self.IdUDPServer.DefaultPort:=5555;
self.IdUDPServer.Active:=True;
end;
procedure TForm1.cmdSendClick(Sender: TObject);
begin
self.IdUDPClient.Send('127.0.0.1',5555,'hello world');
end;
procedure TForm1.IdUDPServerUDPRead(Sender: TObject; AData: TStream;
ABinding: TIdSocketHandle);
var
strStream:TStringStream;
begin
strStream:= TStringStream.Create( '' );
try
strStream.CopyFrom(AData,AData.Size);
showmessage( strStream.DataString );
finally
strStream.Free;
end;
end;
end.