file://开启服务菜单项…
procedure TForm1.N11Click(Sender: TObject);
begin
   serversocket1.Active:=true;    {开启服务}
end;

file://停止服务菜单项…
procedure TForm1.N21Click(Sender: TObject);
begin
   serversocket1.Active:=false;      {停止服务}
   N11.Enabled:=True;
   N21.Enabled:=False;
   Service_Enabled:=false;           {标志清零}
end;

file://主窗口建立…
procedure TForm1.FormCreate(Sender: TObject);
begin
   Service_Enabled:=false;
   timer2.Enabled:=true;        {窗口建立时，打开定时器}
end;

file://窗口关闭时…
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
   timer1.Enabled:=false;          {关闭定时器}
   if Service_Enabled then
      serversocket1.Active:=false;   {退出程序时关闭服务}
end;

file://退出程序按钮…
procedure TForm1.N01Click(Sender: TObject);
begin
   form1.Close;                     {退出程序}
end;

file://开启代理服务后…
procedure TForm1.ServerSocket1Listen(Sender: TObject;
  Socket: TCustomWinSocket);
begin
   Service_Enabled:=true;            {置正在服务标志}
   N11.Enabled:=false;
   N21.Enabled:=true;
end;

file://被代理端连接到代理服务器后，建立一个会话，并与套接字绑定…
procedure TForm1.ServerSocket1ClientConnect(Sender: TObject;
  Socket: TCustomWinSocket);
var
i,j: integer;
begin
   j:=-1;
   for i:=1 to sessions do               {查找是否有空白项}
      if not session[i-1].Used and not session[i-1].CSocket.active then
         begin
            j:=i-1;                      {有，分配它}
            session[j].Used:=true;       {置为在用}
            break;
         end
      else
         if not session[i-1].Used and session[i-1].CSocket.active then
               session[i-1].CSocket.active:=false;
   if j=-1 then
      begin                              {无，新增一个}
         j:=sessions;
         inc(sessions);
         setlength(session,sessions);
         session[j].Used:=true;                        {置为在用}
         session[j].CSocket:=TClientSocket.Create(nil);
         session[j].CSocket.OnConnect:=ClientSocket1Connect;
         session[j].CSocket.OnDisconnect:=ClientSocket1Disconnect;
         session[j].CSocket.OnError:=ClientSocket1Error;
         session[j].CSocket.OnRead:=ClientSocket1Read;
         session[j].CSocket.OnWrite:=ClientSocket1Write;
         session[j].Lookingup:=false;
      end;
   session[j].SS_Handle:=socket.socketHandle;    {保存句柄，实现绑定}
   session[j].Request:=false;                    {无请求}
   session[j].client_connected:=true;            {客户机已连接}
   session[j].remote_connected:=false;           {远程未连接}
   edit1.text:=inttostr(sessions);
end;

file://被代理端断开时…
procedure TForm1.ServerSocket1ClientDisconnect(Sender: TObject;
  Socket: TCustomWinSocket);
var
i,j,k: integer;
begin
   for i:=1 to sessions do
      if (session[i-1].SS_Handle=socket.SocketHandle) and session[i-1].Used then
         begin
            session[i-1].client_connected:=false;   {客户机未连接}
            if session[i-1].remote_connected then
               session[i-1].CSocket.active:=false   {假如远程尚连接，断开它}
            else
               session[i-1].Used:=false;           {假如两者都断开，则置释放资源标志}
            break;
         end;
   j:=sessions;
   k:=0;
   for i:=1 to j do                        {统计会话数组尾部有几个未用项}
      begin
         if session[j-i].Used then
            break;
         inc(k);
      end;
   if k>0 then                          {修正会话数组，释放尾部未用项}
      begin
         sessions:=sessions-k;
         setlength(session,sessions);
      end;
   edit1.text:=inttostr(sessions);
end;

file://通信错误出现时…
procedure TForm1.ServerSocket1ClientError(Sender: TObject;
  Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
  var ErrorCode: Integer);
var
i,j,k: integer;
begin
   for i:=1 to sessions do
      if (session[i-1].SS_Handle=socket.SocketHandle) and session[i-1].Used then
         begin
            session[i-1].client_connected:=false;   {客户机未连接}
            if session[i-1].remote_connected then
               session[i-1].CSocket.active:=false   {假如远程尚连接，断开它}
            else
               session[i-1].Used:=false;           {假如两者都断开，则置释放资源标志}
            break;
         end;
   j:=sessions;
   k:=0;
   for i:=1 to j do
      begin
         if session[j-i].Used then
            break;
         inc(k);
      end;
   if k>0 then
      begin
         sessions:=sessions-k;
         setlength(session,sessions);
      end;
   edit1.text:=inttostr(sessions);
   errorcode:=0;
end;

file://被代理端发送来页面请求时…
procedure TForm1.ServerSocket1ClientRead(Sender: TObject;
  Socket: TCustomWinSocket);
var
tmp,line,host: string;
i,j,port: integer;
begin
   for i:=1 to sessions do &nbs

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