public static bool TryParseProtectedByConnectionId(IAead aead,
ICipher cipher,
MemoryCursor cursor,
PacketConnectionId connectionId,
PacketNumber largestAcknowledgedPacketNumber,
out ShortPacket result)
{
result = new ShortPacket();
var startOffset = cursor.AsOffset();
var firstByte = PacketFirstByte.Parse(cursor.Peek(1).Span[0]);
if (!firstByte.IsShortHeader())
{
return(false);
}
cursor.Move(1);
if (!connectionId.TrySliceValue(cursor))
{
return(false);
}
var payload = PacketPayload.SliceShortProtectedPacketBytes(cursor, aead, cipher, startOffset, firstByte, largestAcknowledgedPacketNumber, out var packetNumber);
result = new ShortPacket(connectionId, packetNumber, payload);
return(true);
}
