data class ConnectionStats(var udpTxDatagrams: Long, var udpTxBytes: Long, var udpRxDatagrams: Long, var udpRxBytes: Long, var lostPackets: Long, var lostBytes: Long)
Flat snapshot of the headline numbers from noq::ConnectionStats.
Counters are i64 (not u64) so Kotlin sees Long, not ULong.