private async ValueTask ReadFrameAsync(CancellationToken cancellationToken)
{
UpdateKnownMessageSize(-1);
await InnerTransport.ReadAllAsync(HeaderBuf, 0, HeaderSize, cancellationToken);
int size = BinaryPrimitives.ReadInt32BigEndian(HeaderBuf);
if ((0 > size) || (size > Configuration.MaxFrameSize)) // size must be in the range 0 to allowed max
{
throw new TTransportException(TTransportException.ExceptionType.Unknown, $"Maximum frame size exceeded ({size} bytes)");
}
UpdateKnownMessageSize(size + HeaderSize);
ReadBuffer.SetLength(size);
ReadBuffer.Seek(0, SeekOrigin.Begin);
ReadBuffer.TryGetBuffer(out ArraySegment <byte> bufSegment);
await InnerTransport.ReadAllAsync(bufSegment.Array, 0, size, cancellationToken);
}