Использование ServerSocket и ClientSocket

Delphi , Интернет и Сети , Сокеты

Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

// Client Program: 
// Send 'power' to Client to shutdown the machine. 
// Send 'reset' to Client to reset the machine. 

unit Unit1;

 interface

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

 type
   TForm1 = class(TForm)
     Clientsocket1: TClientSocket;
     StatusBar1: TStatusBar;
     Button1: TButton;
     Button2: TButton;
     Edit1: TEdit;
     Label1: TLabel;
     Button3: TButton;
     CheckBox1: TCheckBox;
     Checkbox2: TCheckBox;
     procedure Button1Click(Sender : TObject);
     procedure Button2Click(Sender : TObject);
     procedure Clientsocket1Error(Sender : TObject; Socket : TCustomWinSocket;
       ErrorEvent : TErrorEvent; var ErrorCode : integer);
     procedure Clientsocket1Disconnect(Sender : TObject;
       Socket : TCustomWinSocket);
     procedure Clientsocket1Connect(Sender : TObject;
       Socket : TCustomWinSocket);
     procedure Button3Click(Sender : TObject);
     procedure FormClose(Sender : TObject; var Action : TCloseAction);
     procedure FormDestroy(Sender : TObject);
   private
     { Private declarations }
   public
     { Public declarations }
   end;

 var
   Form1 : TForm1;

 implementation

 {$R *.dfm}

 procedure TForm1.Button1Click(Sender : TObject);
 begin
   Clientsocket1.Active := True;
 end;

 procedure TForm1.Button2Click(Sender : TObject);
 begin
   Clientsocket1.Active := False;
 end;

 procedure TForm1.Clientsocket1Error(Sender : TObject;
   Socket : TCustomWinSocket; ErrorEvent : TErrorEvent;
   var ErrorCode : integer);
 begin
   errorcode := 0;
   StatusBar1.SimpleText := 'Error';
 end;

 procedure TForm1.Clientsocket1Disconnect(Sender : TObject;
   Socket : TCustomWinSocket);
 begin
   StatusBar1.SimpleText := 'Disconnect';
 end;

 procedure TForm1.Clientsocket1Connect(Sender : TObject;
   Socket : TCustomWinSocket);
 begin
   StatusBar1.SimpleText := Clientsocket1.Address;
 end;

 procedure TForm1.Button3Click(Sender : TObject);
 var
   ukaz : string;
   orders : string;
   Text : string;
   box : string;
 begin
   ukaz := edit1.Text;
   Clientsocket1.Socket.SendText(ukaz);
   if checkbox1.Checked = True then
   begin
     orders := 'power';
     Clientsocket1.Socket.SendText(orders);
   end;
   if Checkbox2.Checked = True then
   begin
     Text := 'reset';
     Clientsocket1.Socket.SendText(Text);
   end;
 end;

 procedure TForm1.FormClose(Sender : TObject; var Action : TCloseAction);
 begin
   Clientsocket1.Active := False;
 end;

 procedure TForm1.FormDestroy(Sender : TObject);
 begin
   Clientsocket1.Active := False;
 end;

 end.


 // Client Program 

unit Unit1;

 interface

 uses
   Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
   Dialogs, ScktComp, StdCtrls, ShellApi;

 type
   TForm1 = class(TForm)
     Label1: TLabel;
     Serversocket1: TServerSocket;
     procedure FormClose(Sender : TObject; var Action : TCloseAction);
     procedure FormDestroy(Sender : TObject);
     procedure FormCreate(Sender : TObject);
     procedure Serversocket1ClientError(Sender : TObject;
       Socket : TCustomWinSocket; ErrorEvent : TErrorEvent;
       var ErrorCode : integer);
     procedure Serversocket1ClientRead(Sender : TObject;
       Socket : TCustomWinSocket);
   private
     { Private declarations }
   public
     { Public declarations }
   end;

 var
   Form1 : TForm1;

 implementation

 {$R *.dfm}

 procedure TForm1.FormClose(Sender : TObject; var Action : TCloseAction);
 begin
   Serversocket1.Active := False;
 end;

 procedure TForm1.FormDestroy(Sender : TObject);
 begin
   Serversocket1.Active := False;
 end;

 procedure TForm1.FormCreate(Sender : TObject);
 begin
   Serversocket1.Active := True;
 end;

 procedure TForm1.Serversocket1ClientError(Sender : TObject;
   Socket : TCustomWinSocket; ErrorEvent : TErrorEvent;
   var ErrorCode : integer);
 begin
   errorcode := 0;
 end;

 procedure TForm1.Serversocket1ClientRead(Sender : TObject;
   Socket : TCustomWinSocket);
 var
   ukaz : string;
   orders : string;
   Text : string;
   box : string;
 begin
   ukaz := socket.ReceiveText;
   label1.Caption := 'reciving...';
   ShellExecute(Handle, 'open', PChar(ukaz), PChar(''), nil, sw_show);
   Text := socket.ReceiveText;
   orders := socket.ReceiveText;
   if orders = 'power' then
   begin
     ShellExecute(Handle, 'open', PChar('shutdown.exe'), PChar('-s'), nil, sw_show);
     Application.MessageBox('You will be turned off', 'Warning', mb_iconexclamation);
     Serversocket1.Active := False;
     Form1.Close;
   end;
   if Text = 'reset' then
   begin
     ShellExecute(Handle, 'open', PChar('shutdown.exe'), PChar('-r'), nil, sw_show);
     Application.MessageBox('You will be reset', 'Warning', mb_iconexclamation);
     Serversocket1.Active := False;
     Form1.Close;
   end;
 end;


 end.

Статья Использование ServerSocket и ClientSocket раздела Интернет и Сети Сокеты может быть полезна для разработчиков на Delphi и FreePascal.

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