public override void HandleAlertMessage(ReadableBuffer messageBuffer)
{
var level = messageBuffer.ReadBigEndian <Alerts.AlertLevel>();
messageBuffer = messageBuffer.Slice(sizeof(Alerts.AlertLevel));
var description = messageBuffer.ReadBigEndian <Alerts.AlertDescription>();
if (level == Alerts.AlertLevel.Warning && description == Alerts.AlertDescription.end_of_early_data && State == StateType.WaitEarlyDataFinished)
{
//0RTT data finished so we switch the reader key to the handshake key and wait for
//the client to send it's finish message
_readKey?.Dispose();
_readKey = KeySchedule.GenerateClientHandshakeKey();
ChangeState(StateType.WaitClientFinished);
return;
}
Alerts.AlertException.ThrowAlert(level, description, "Alert from the client");
}
private unsafe void GenerateHandshakeKeys()
{
if (KeySchedule == null)
{
KeySchedule = Listener.KeyScheduleProvider.GetKeySchedule(this);
}
KeySchedule.SetDheDerivedValue(KeyShare);
var hash = stackalloc byte[HandshakeHash.HashSize];
var span = new Span <byte>(hash, HandshakeHash.HashSize);
HandshakeHash.InterimHash(hash, HandshakeHash.HashSize);
KeySchedule.GenerateHandshakeTrafficSecrets(span);
_writeKey = KeySchedule.GenerateServerHandshakeKey();
if (PskIdentity == -1 || !EarlyDataSupported)
{
_readKey?.Dispose();
_readKey = KeySchedule.GenerateClientHandshakeKey();
}
}
