SocketSelect

function SocketSelect(

  const nfds: Word32;

  var ReadFDS: TSocketHandleArray;

  var WriteFDS: TSocketHandleArray;

  var ExceptFDS: TSocketHandleArray;

  const TimeOutMicroseconds: Int64

):Integer; overload;

function SocketSelect(

  const S: TSocketHandle;

  var ReadSelect: Boolean;

  var WriteSelect: Boolean;

  var ExceptSelect: Boolean;

  const TimeOutMicroseconds: Int64

):Integer; overload;