vppn/peer/nonce.go
2024-12-08 09:45:29 +01:00

27 lines
574 B
Go

package peer
import "unsafe"
func ParseNonceBytes(nb []byte, nonce *Nonce) {
nonce.Counter = *(*uint64)(unsafe.Pointer(&nb[0]))
nonce.SourceIP = nb[8]
nonce.ViaIP = nb[9]
nonce.DestIP = nb[10]
nonce.StreamID = nb[11]
nonce.PacketType = nb[12]
}
func MarshalNonce(nonce Nonce, buf []byte) {
*(*uint64)(unsafe.Pointer(&buf[0])) = nonce.Counter
buf[8] = nonce.SourceIP
buf[9] = nonce.ViaIP
buf[10] = nonce.DestIP
buf[11] = nonce.StreamID
buf[12] = nonce.PacketType
clear(buf[13:])
}
func CounterTimestamp(counter uint64) int64 {
return int64(counter >> 30)
}