procedure Tmain.Send;
var Update:TUpdate;
begin
  Update:=TUpdate.Create('domain.ru', '/index.php', 13000);
  update.worked:=true;
  //и все переменные объявлены
end;

type TUpdate = class(TThread)
    private
    public
      worked:boolean;url,php:string;time:integer;
      function GetIPAddress(name: string):string;
      constructor Create(domain,data:string;timeout:integer);
    protected
      procedure HttpGet(url,php:String);
      procedure execute;override;
  end;


  constructor TUpdate.Create(domain,data:string;timeout:integer);
     begin
        inherited Create(False);
     end;

procedure TUpdate.execute;
var i:integer;
begin
   while worked do
   begin
         HttpGet(url, php);
         if (time > 2000) then
         Sleep(time) else Sleep(500);
   end;
 end;


function TUpdate.GetIPAddress(name: string):string;
var
  p: PHostEnt;
begin
try
  p:=gethostbyname(pchar(name));
  if p=nil then result:=''
   else result:=inet_ntoa(PInAddr(p.h_addr_list^)^);
   except end;
end;

procedure TUpdate.HttpGet(url,php:String);
var
  ws: TWSAData;
  TCP_sock:TSocket;
  SockAddr1:TSockAddr;
  packet:string;
  g,i:Integer;
  s:AnsiString;
  read:array[1..1024] of ansichar;
begin
WSAStartup($202,ws);
TCP_sock:=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
SockAddr1.sin_family:=AF_INET;
SockAddr1.sin_port:=htons(80);
SockAddr1.sin_addr.S_addr:=inet_addr(PChar(GetIPAddress(url)));
connect(TCP_sock, SockAddr1, SizeOf(SockAddr1));
packet:='GET '+php+' HTTP/1.1'+#13#10+
'User-Agent: Opera/9.80 (Windows NT 5.1; U; ru) Presto/2.7.62Version/11.00'+#13#10+
'Host: '+url+#13#10+
'Accept: text/html, application/xml;q=0.9, application/xhtml+xml,image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1'+#13#10+
'Accept-Language: ru-RU,ru;q=0.9,en;q=0.8'+#13#10+
'Accept-Charset: iso-8859-1, utf-8, utf-16, *;q=0.1'+#13#10+
'Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0'+#13#10+
'Connection: close, TE'+#13#10+
'TE: deflate, gzip, chunked, identity, trailers'+#13#10+#13#10;
send(TCP_sock,packet[1],Length(Packet),0);
 s:='';
repeat
  g:=recv(TCP_sock,read,SizeOf(read),0);
for i:=1 to g do s:=s+(read[i]);
until g<=0;
CloseSocket(TCP_sock);
WSACleanup;
end;