public SackChunk(CType type, byte flags, int length, ByteBuffer pkt)
: base(type, flags, length, pkt)
{
_cumuTSNAck = _body.GetUInt();
_arWin = _body.GetUInt();
int ngaps = _body.GetUShort();
int nDTSNs = _body.GetUShort();
_gaps = new GapBlock[ngaps];
_duplicateTSNs = new uint[nDTSNs];
for (int i = 0; i < ngaps; i++)
{
_gaps[i] = new GapBlock(_body);
}
for (int i = 0; i < nDTSNs; i++)
{
_duplicateTSNs[i] = _body.GetUInt();
}
}
public void setGaps(List <uint> seenTsns)
{
long cuTsn = _cumuTSNAck;
List <GapBlock> gaplist = new List <GapBlock>();
GapBlock currentGap = null;
ushort prevoff = (ushort)0;
foreach (long t in seenTsns)
{
ushort offs = (ushort)(t - cuTsn);
if (currentGap == null)
{
currentGap = new GapBlock(offs);
currentGap.setEnd(offs);
gaplist.Add(currentGap);
}
else
{
if (offs == prevoff + 1)
{
currentGap.setEnd(offs);
}
else
{
currentGap = new GapBlock(offs);
currentGap.setEnd(offs);
gaplist.Add(currentGap);
}
}
prevoff = offs;
}
_gaps = new GapBlock[gaplist.Count];
int i = 0;
foreach (GapBlock g in gaplist)
{
_gaps[i++] = g;
}
}