private async Task RejectPackage(MessagePackage messagePackage, CancellationToken cancellationToken)
{
var ack = new CommandAck {
Type = CommandAck.AckType.Individual, ValidationError = CommandAck.ValidationErrorType.ChecksumMismatch
};
ack.MessageIds.Add(messagePackage.MessageId);
await Send(ack, cancellationToken).ConfigureAwait(false);
}
public void Received(MessagePackage message)
{
try
{
_enqueue.Enqueue(message);
}
catch
{
// Ignore
}
}
private async ValueTask <bool> Validate(MessagePackage messagePackage)
{
var magicNumberMatches = messagePackage.Data.StartsWith(Constants.MagicNumber);
var expectedChecksum = messagePackage.Data.ReadUInt32(2, true);
var actualChecksum = Crc32C.Calculate(messagePackage.Data.Slice(6));
if (!magicNumberMatches || expectedChecksum != actualChecksum)
{
var ack = new CommandAck
{
Type = CommandAck.AckType.Individual,
validation_error = CommandAck.ValidationError.ChecksumMismatch
};
ack.MessageIds.Add(messagePackage.MessageId);
await Send(ack);
return(false);
}
return(true);
}
public void Received(MessagePackage message) => _enqueue.Enqueue(message);
public void Enqueue(MessagePackage package) => _queue.Enqueue(package);
