func DecodeLossDigestOption(opt *dccp.Option) *LossDigestOption {
if opt.Type != OptionLossDigest || len(opt.Data) != 5 {
return nil
}
return &LossDigestOption{
RateInv: dccp.DecodeUint32(opt.Data[0:4]),
NewLossCount: dccp.DecodeUint8(opt.Data[4:5]),
}
}
func DecodeLossIntervalsOption(opt *dccp.Option) *LossIntervalsOption {
if opt.Type != OptionLossIntervals || len(opt.Data) < 1 {
return nil
}
k, r := (len(opt.Data)-1)/lossIntervalFootprint, (len(opt.Data)-1)%lossIntervalFootprint
if k > MaxLossIntervals || r != 0 {
return nil
}
skip := dccp.DecodeUint8(opt.Data[0:1])
intervals := make([]*LossInterval, k)
for i := 0; i < k; i++ {
start := 1 + lossIntervalFootprint*i
intervals[i] = decodeLossInterval(opt.Data[start : start+lossIntervalFootprint])
if intervals[i] == nil {
return nil
}
}
return &LossIntervalsOption{
SkipLength: skip,
LossIntervals: intervals,
}
}