public void Append(Message message)
{
if (_stream == null)
{
throw new ObjectDisposedException("LogWriter");
}
if (message.Time != _time)
{
BlockHelper.WriteBlock(_stream, BlockType.Timestamp,
new ArraySegment <byte>(LogHelper.DateTimeToBytes(message.Time)));
_time = message.Time;
}
var blockType = message.Direction == MessageDirection.ClientToServer ? BlockType.Client : BlockType.Server;
BlockHelper.WriteBlock(_stream, blockType, message.Data);
_stream.Flush();
}
private void ReadHeader()
{
BlockType blockType;
byte[] data;
{
// magic bytes
BlockHelper.ReadBlock(_stream, out blockType, out data);
if (blockType != BlockType.MagicBytes)
{
throw new FormatException("First block must be a MagicBytes block");
}
if (!data.SequenceEqual(LogHelper.Encoding.GetBytes(LogHelper.MagicBytes)))
{
throw new FormatException("Incorrect magic bytes");
}
}
do
{
BlockHelper.ReadBlock(_stream, out blockType, out data);
switch (blockType)
{
case BlockType.Start:
break;
case BlockType.Region:
Header.Region = LogHelper.Encoding.GetString(data);
break;
case BlockType.MagicBytes:
case BlockType.Timestamp:
case BlockType.Server:
case BlockType.Client:
throw new FormatException($"Unexpected block type in header '{blockType}'");
}
} while (blockType != BlockType.Start);
}
