public static RedisMessage FromBytes(IMessageEncryptor encryptor, byte[] data, TraceSource trace)
{
using (var stream = new MemoryStream(data))
{
var message = new RedisMessage();
// read message id from memory stream until SPACE character
var messageIdBuilder = new StringBuilder(20);
do
{
// it is safe to read digits as bytes because they encoded by single byte in UTF-8
int charCode = stream.ReadByte();
if (charCode == -1)
{
trace.TraceVerbose("Received Message could not be parsed.");
throw new EndOfStreamException(Resources.Error_EndOfStreamRedis);
}
char c = (char)charCode;
if (c == ' ')
{
message.Id = ulong.Parse(messageIdBuilder.ToString(), CultureInfo.InvariantCulture);
messageIdBuilder = null;
}
else
{
messageIdBuilder.Append(c);
}
}while (messageIdBuilder != null);
var encryptedBinaryReader = new BinaryReader(stream);
var encryptedData = encryptedBinaryReader.ReadBytes((int)(stream.Length - stream.Position));
var decryptedData = encryptor.Decrypt(encryptedData);
using (var dataStream = new MemoryStream(decryptedData))
using (var decryptedReader = new BinaryReader(dataStream))
{
int count = decryptedReader.ReadInt32();
byte[] buffer = decryptedReader.ReadBytes(count);
message.ScaleoutMessage = ScaleoutMessage.FromBytes(buffer);
}
return(message);
}
}
