//for un packing the byte array
public ArrayList makeResponse()
{
ArrayList mxRecords = new ArrayList();
MXRecord mxRecord;
//NOTE: we are ignoring the unnecessary fields.
// and takes only the data required to build
// MX records.
int qCount = ((data[4] & 0xFF) << 8) | (data[5] & 0xFF);
if (qCount < 0)
{
throw new IOException("invalid question count");
}
int aCount = ((data[6] & 0xFF) << 8) | (data[7] & 0xFF);
if (aCount < 0)
{
throw new IOException("invalid answer count");
}
position = 12;
for (int i = 0; i < qCount; ++i)
{
name = "";
position = proc(position);
position += 4;
}
for (int i = 0; i < aCount; ++i)
{
name = "";
position = proc(position);
position += 10;
int pref = (data[position++] << 8) | (data[position++] & 0xFF);
name = "";
position = proc(position);
mxRecord = new MXRecord();
mxRecord.preference = pref;
mxRecord.exchange = name;
mxRecords.Add(mxRecord);
}
return(mxRecords);
}
//for unpacking the byte array
public static ArrayList makeResponse() {
ArrayList mxRecords = new ArrayList();
MXRecord mxRecord;
//NOTE: we are ignoring the unnecessary fields.
// and takes only the data required to build
// MX records.
int qCount = ((data[4] & 0xFF) << 8) | (data[5] & 0xFF);
if (qCount < 0) {
throw new IOException("invalid question count");
}
int aCount = ((data[6] & 0xFF) << 8) | (data[7] & 0xFF);
if (aCount < 0) {
throw new IOException("invalid answer count");
}
position=12;
for( int i=0;i<qCount; ++i) {
name = "";
position = proc(position);
position += 4;
}
for (int i = 0; i < aCount; ++i) {
name = "";
position = proc(position);
position+=10;
int pref = (data[position++] << 8) | (data[position++] & 0xFF);
name="";
position = proc(position);
mxRecord = new MXRecord();
mxRecord.preference = pref;
mxRecord.exchange = name;
mxRecords.Add(mxRecord);
}
return mxRecords;
}