Автор: Spawn
WEB-сайт: http://forum.vingrad.ru

Функции GetTcpTable, GetUdpTable.

Импорт GetTcpTable:

unit TcpTable;
interface
type
  PDWord = ^Longword;
  PMIB_TCPROW = ^TMIB_TCPROW;
  TMIB_TCPROW = record
    dwState: LongWord;
    dwLocalAddr: LongWord;
    dwLocalPort: LongWord;
    dwRemoteAddr: LongWord;
    dwRemotePort: LongWord;
  end;
  PMIB_TCPTABLE = ^TMIB_TCPTABLE;
  TMIB_TCPTABLE = record
    dwNumEntries: LongWord;
    table: array[0..0] of TMIB_TCPROW;
  end;

function GetTcpTable(var TcpTable: PMIB_TCPTABLE;
  var Size: PDWord; bOrder: Boolean): LongWord; stdcall

implementation

function GetTcpTable; external 'Iphlpapi.dll' name 'GetTcpTable';

end.

Вызов GetTcpTable:

{$R-}
Entries := 16;
Sz := SizeOf(TMIB_TCPTABLE) + SizeOf(TMIB_TCPROW) * (Entries - 1);
pMibTable := nil;
try
  repeat
    ReallocMem(pMibTable, Sz);
    Res := GetTcpTable(pMibTable^, Sz, False);
  until Res <> ERROR_INSUFFICIENT_BUFFER;
  if Res <> NO_ERROR then
  begin
    ShowMessage(SysErrorMessage(Res));
    exit;
  end;
  for Entries := 0 to pMibTable.dwNumEntries - 1 do
  begin
    < Делать что - то >
  end;
finally
  FreeMem(pMibTable);
end;
{$R+}