/** Apply connection-wide flow control to the incoming data frame. */
private void applyConnectionFlowControl(int dataLength, FrameWriter frameWriter)
throws Http2Exception {
// Remove the data length from the available window size. Throw if the lower bound
// was exceeded.
connectionState.addAndGet(-dataLength);
// If less than the window update threshold remains, restore the window size
// to the initial value and send a window update to the remote endpoint indicating
// the new window size.
if (connectionState.windowSize() <= getWindowUpdateThreshold()) {
connectionState.updateWindow(frameWriter);
}
}
/** Apply stream-based flow control to the incoming data frame. */
private void applyStreamFlowControl(
int streamId, int dataLength, boolean endOfStream, FrameWriter frameWriter)
throws Http2Exception {
// Remove the data length from the available window size. Throw if the lower bound
// was exceeded.
FlowState state = getStateOrFail(streamId);
state.addAndGet(-dataLength);
// If less than the window update threshold remains, restore the window size
// to the initial value and send a window update to the remote endpoint indicating
// the new window size.
if (state.windowSize() <= getWindowUpdateThreshold() && !endOfStream) {
state.updateWindow(frameWriter);
}
}
