Parse a DatagramPacket after converting it to a byte array in Java

Question

I am trying to parse a DatagramPacket that I will receive at a socket. I know the format of the packet I will receive, which is a DHCPREQUEST packet, but I don\'t think that rea

Answer 1

I'm a bit late to this, but there's a ByteBuffer class:

ByteBuffer b = ByteBuffer.wrap(request.getData());

byte opcode = b.get();
byte hwtype = b.get();
byte hw_addr_len = b.get();
byte hops = b.get();
int xid = b.getInt();
short seconds = b.getShort();

Or, if you only need a single field:

ByteBuffer b = ByteBuffer.wrap(request.getData());
int xid = b.getInt(4);