Name: rlT66838 Date: 07/27/99


This problem sits somewhere in the middle of 'bug' and 'feature request'.

When you create a new DatagramSocket(int port) for listening for
incoming UDP packets, the packet that is returned by the receive(..)
method does not seem to have access to the destination address to which
the packet was sent.

One might argue that if you know the ip of the host on which the packet
is received, then you know the destination. Unfortunately this is
NOT true. If for example I have an IP 10.0.0.1, then I would receive
all UDP packets sent to 10.0.0.1 AS WELL AS packets sent to 10.0.0.255
(assuming a class C network). mmmm, interesting thing that the programmers
missed out on.

It would be nice to have a method like:
boolean isBroadcast() or possibly access to all the fields in the
IP packet header.

If I am not mistaken the IP headers look something like (in C):

struct IP_Header {
   unsigned char verlen, type;
   unsigned short length, ID, flag_offset;
   unsigned char TTL, protocol;
   unsigned short checksum;
   unsigned long int source, destination;
};

So why not give us access to all the fields, instead of just a few?!?!?

Have a nice day.
Ilan
(Review ID: 88446)
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