private byte[] buildHeader(SerializerTag tag, int length)
{
List <byte[]> buildHeader = new List <byte[]>()
{
// version: 1
BitConverter.GetBytes(1),
// tag:
BitConverter.GetBytes((int)tag),
// length:
BitConverter.GetBytes(length)
};
MemoryStream packHeader = new MemoryStream();
foreach (byte[] bs in buildHeader)
{
packHeader.Write(bs, 0, bs.Length);
}
// (3*4=12 bytes for header)
byte[] header = packHeader.ToArray();
Debug.Assert(header.Length == 3 * 4);
return(header);
}
private async Task <bool> writeAsync(SerializerTag tag, byte[] buffer, int offset, int length)
{
// sanity check
Debug.Assert(buffer.Length >= offset + length);
// truncate write length if necessary
if (length > WRITE_MAX)
{
Debug.Assert(false);
length = WRITE_MAX;
}
// construct the header
var header = buildHeader(tag, length);
using (var lck = new AsyncLockManager(m_writeLock))
{
await lck.LockAsync();
// send the header, then write the buffer
return(await m_stream.WriteAsync(header, 0, header.Length) &&
await m_stream.WriteAsync(buffer, offset, length));
}
}
