Message(DNSInput in) throws IOException {
this(new Header(in));
boolean isUpdate = (header.getOpcode() == Opcode.UPDATE);
boolean truncated = header.getFlag(Flags.TC);
try {
for (int i = 0; i < 4; i++) {
int count = header.getCount(i);
if (count > 0) sections[i] = new ArrayList(count);
for (int j = 0; j < count; j++) {
int pos = in.current();
Record rec = Record.fromWire(in, i, isUpdate);
sections[i].add(rec);
if (i == Section.ADDITIONAL) {
if (rec.getType() == Type.TSIG) tsigstart = pos;
if (rec.getType() == Type.SIG) {
SIGRecord sig = (SIGRecord) rec;
if (sig.getTypeCovered() == 0) sig0start = pos;
}
}
}
}
} catch (WireParseException e) {
if (!truncated) throw e;
}
size = in.current();
}
