/// <summary>
/// Writes the body length in the frame and returns the frame length
/// </summary>
public int Close()
{
//Set the length in the header
//MemoryStream implementation length and offset are ints, so cast is safe
var frameLength = Convert.ToInt32(_stream.Length - _offset);
var lengthBytes = BeConverter.GetBytes(frameLength - _version.GetHeaderSize());
//The length could start at the 4th or 5th position
long lengthOffset = 4;
if (_version.Uses2BytesStreamIds())
{
lengthOffset = 5;
}
//Set the position of the stream where the frame body length should be written
_stream.Position = _offset + lengthOffset;
_stream.Write(lengthBytes, 0, lengthBytes.Length);
_stream.Position = _stream.Length;
return(frameLength);
}