/// <summary>
/// The window update ratio is used to determine when a window update must be sent. If the ratio
/// of bytes processed since the last update has meet or exceeded this ratio then a window update will
/// be sent. This window update ratio will only be applied to <c>streamId</c>.
/// <para>Note it is the responsibly of the caller to ensure that the
/// initial <c>SETTINGS</c> frame is sent before this is called. It would
/// be considered a <see cref="Http2Error.ProtocolError"/> if a <c>WINDOW_UPDATE</c>
/// was generated by this method before the initial <c>SETTINGS</c> frame is sent.</para>
/// </summary>
/// <param name="stream">the stream for which <paramref name="ratio"/> applies to.</param>
/// <param name="ratio">the ratio to use when checking if a <c>WINDOW_UPDATE</c> is determined necessary.</param>
/// <remarks>If a protocol-error occurs while generating <c>WINDOW_UPDATE</c> frames</remarks>
public void WindowUpdateRatio(IHttp2Stream stream, float ratio)
{
Debug.Assert(_ctx is object && _ctx.Executor.InEventLoop);
CheckValidRatio(ratio);
IFlowState state = GetState(stream);
state.WindowUpdateRatio(ratio);
_ = state.WriteWindowUpdateIfNeeded();
}
public void IncrementWindowSize(IHttp2Stream stream, int delta)
{
Debug.Assert(_ctx is object && _ctx.Executor.InEventLoop);
IFlowState state = GetState(stream);
// Just add the delta to the stream-specific initial window size so that the next time the window
// expands it will grow to the new initial size.
state.IncrementInitialStreamWindow(delta);
_ = state.WriteWindowUpdateIfNeeded();
}