Re: [Synalist] Udp discovering software

[Dalibor T. <dt...@fo...>]

On 9/29/2014 3:02 PM, Denis wrote:
>
> Hi. I have wrote a background program for Linux for discovering 
> machines in a network using udp. The program is necessary because the 
> machines can have an address in a unknown network and I must find them.
>
> This is the server side program:
>
> TBSUdpSocket.bind('255.255.255.255', '65534');
>
> if TBSUdpSocket.LastError<> 0 then WriteLn(TBSUdpSocket.LastErrorDesc) 
> else begin
>
> while not Terminated do begin
>
> StringIn:= TBSUdpSocket.RecvPacket(1000);
>
> And this is the client side:
>
> TBSUdpSocket.CreateSocket;
>
> TBSUdpSocket.EnableBroadcast(true);
>
> TBSUdpSocket.Connect('255.255.255.255', '65534');
>
> TBSUdpSocket.SendString('_?'+ #10);
>
> TBSUdpSocket.Connect('255.255.255.255', '65534');
>
> The program can discover machines only if the machines are in the same 
> network of the client.
>
> How can I find machines in a different network (multicast)?
>
>

You have to scan over all Internet IP addresses. There is no other way 
(fortunatelly).

-- 
Dalibor Toman