public void StreamZeroWindowUpdateIncrementsConnectionWindow()
{
IHttp2Connection connection = _frameCodec.Connection;
IHttp2LocalFlowController localFlow = connection.Local.FlowController;
int initialWindowSizeBefore = localFlow.InitialWindowSize;
IHttp2Stream connectionStream = connection.ConnectionStream;
int connectionWindowSizeBefore = localFlow.GetWindowSize(connectionStream);
// We only replenish the flow control window after the amount consumed drops below the following threshold.
// We make the threshold very "high" so that window updates will be sent when the delta is relatively small.
((DefaultHttp2LocalFlowController)localFlow).WindowUpdateRatio(connectionStream, .999f);
int windowUpdate = 1024;
_channel.WriteAsync(new DefaultHttp2WindowUpdateFrame(windowUpdate));
// The initial window size is only changed by Http2Settings, so it shouldn't change.
Assert.Equal(initialWindowSizeBefore, localFlow.InitialWindowSize);
// The connection window should be increased by the delta amount.
Assert.Equal(connectionWindowSizeBefore + windowUpdate, localFlow.GetWindowSize(connectionStream));
}
public void WindowUpdateDoesNotOverflowConnectionWindow()
{
IHttp2Connection connection = _frameCodec.Connection;
IHttp2LocalFlowController localFlow = connection.Local.FlowController;
int initialWindowSizeBefore = localFlow.InitialWindowSize;
_channel.WriteAsync(new DefaultHttp2WindowUpdateFrame(int.MaxValue));
// The initial window size is only changed by Http2Settings, so it shouldn't change.
Assert.Equal(initialWindowSizeBefore, localFlow.InitialWindowSize);
// The connection window should be increased by the delta amount.
Assert.Equal(int.MaxValue, localFlow.GetWindowSize(connection.ConnectionStream));
}
public int GetWindowSize(IHttp2Stream stream)
{
return(_flowController.GetWindowSize(stream));
}
