On Tuesday, October 08, 2013 9:58 PM [GMT+1=CET], Markus Humm wrote: > 3. I send UDP packets with a target address of 255.255.255.255 > > This works fine as long as only one network adapter is present in the > system.
AFAIK a broadcast target is always a network or subnet. Hence if there are multiple networks connected to the computer you have to broadcast to each of them. Here's a sample of how one gets the IPv4 broadcast addresses with ICSv8: uses OverbyteIcsWinsock, OverbyteIcsWSocket, OverbyteIcsSocketUtils; var IL: TInterfaceList; I: Integer; const IFF_LOOPBACK = $00000004; begin IL := TInterfaceList.Create; try IcsGetInterfaceList(IL); for I := 0 to IL.Count -1 do begin if (IL[I]^.iiAddress.AddressIn.sin_family = AF_INET) and (IL[I]^.iiFlags and IFF_LOOPBACK = 0) then // IPv4 no loopback Memo1.Lines.Add(string(WSocket_inet_ntoa(IL[I]^.iiBroadcastAddress.AddressIn.sin_addr))); end; finally IL.Free; end; -- Arno -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be