delphi TServerSocket的多线程

http://blog.sina.com.cn/s/blog_471218c2010001qc.html

unit U_dxc;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Spin, ScktComp, ComCtrls, Menus, activex;

  TFileServerThread = class(TServerClientThread)
  public
    procedure ClientExecute; override;
  end;

var
Form1: TForm1;

implementation

{$R *.dfm}

{ TFileServerThread }

procedure TFileServerThread.ClientExecute;
var
  Data : array[0..1023] of char;
  aa0, aa1 : string;
  RecText : string;
  //cd : integer;
  SocketStream : TWinSocketStream;
begin

  While Not Terminated And ClientSocket.Connected Do
  Try
    SocketStream := TWinSocketStream.Create(ClientSocket, 30000);
    Try
      FillChar(Data, SizeOf(Data), 0);
      If SocketStream.Read(Data, SizeOf(Data)) = 0 Then
      Begin
        // If we didn't get any data after xx seconds then close the connection
        ClientSocket.SendText('Timeout on Server'+#13#10);
        //Wait a little time to allow sending of text before disconnect
        sleep(1);
        ClientSocket.Close;
        Terminate;
      End;
      RecText := Data;
      If Length(RecText) > 2 Then
        Delete(RecText, Pos(#13#10, RecText), 2); // Delete #13#10
      If ClientSocket.Connected Then
      Begin
        ClientSocket.SendText(RecText);
        SendMessage(Form1.Listbox1.Handle, LB_ADDSTRING, 0, Integer(PChar(RecText)));
        PostMessage(Form1.Handle, CM_INCCOUNT, 0, 0);
      End;
    Finally
      SocketStream.Free;
    End;
  Except
    HandleException;
  End;  While Not Terminated And ClientSocket.Connected Do
  Try
    SocketStream := TWinSocketStream.Create(ClientSocket, 30000);
    Try
      FillChar(Data, SizeOf(Data), 0);
      If SocketStream.Read(Data, SizeOf(Data)) = 0 Then
      Begin
        // If we didn't get any data after xx seconds then close the connection
        ClientSocket.SendText('Timeout on Server'+#13#10);
        //Wait a little time to allow sending of text before disconnect
        sleep(1);
        ClientSocket.Close;
        Terminate;
      End;
      RecText := Data;
      If Length(RecText) > 2 Then
        Delete(RecText, Pos(#13#10, RecText), 2); // Delete #13#10
      If ClientSocket.Connected Then
      Begin
        ClientSocket.SendText(RecText);
        SendMessage(Form1.Listbox1.Handle, LB_ADDSTRING, 0, Integer(PChar(RecText)));
        PostMessage(Form1.Handle, CM_INCCOUNT, 0, 0);
      End;
    Finally
      SocketStream.Free;
    End;
  Except
    HandleException;
  End;
end;
procedure TForm1.ServerSocketClientError(Sender: TObject;
  Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
  var ErrorCode: Integer);
begin
  errorcode := 0;
  ThreadCount.Text := IntToStr(StrToInt(ThreadCount.Text) - 1);
end;

procedure TForm1.ServerSocketGetThread(Sender: TObject;
  ClientSocket: TServerClientWinSocket;
  var SocketThread: TServerClientThread);
begin
  SocketThread := TFileServerThread.Create(False, ClientSocket);
end;

procedure TForm1.ServerSocketThreadEnd(Sender: TObject;
Thread: TServerClientThread);
begin
ThreadCount.Text := IntToStr(StrToInt(ThreadCount.Text) - 1);
end;

procedure TForm1.ServerSocketThreadStart(Sender: TObject;
Thread: TServerClientThread);
begin
ThreadCount.Text := IntToStr(StrToInt(ThreadCount.Text) + 1);
end;

procedure TForm1.CacheEditChange(Sender: TObject);
begin
ServerSocket.ThreadCacheSize := CacheEdit.Value;
end;

procedure TForm1.PortEditChange(Sender: TObject);
begin
ServerSocket.Port := StrToInt(PortEdit.Text);
end;

procedure TForm1.ActiveItemClick(Sender: TObject);
begin
  ServerSocket.Active := not ServerSocket.Active;
  ActiveItem.Checked := ServerSocket.Active;
  if ServerSocket.Active then
    StatusBar1.SimpleText := 'Active'
  else
    StatusBar1.SimpleText := 'InActive';
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
CacheEdit.Value := ServerSocket.ThreadCacheSize;
PortEdit.Value := ServerSocket.Port;

ActiveItemClick(nil);
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
ServerSocket.Close;
end;

procedure TForm1.Exit1Click(Sender: TObject);
begin
Close;
end;

end.