receiveFlowControlledFrame() — netty Function Reference

Source Code

codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2LocalFlowController.java lines 414–430

        @Override
        public void receiveFlowControlledFrame(int dataLength) throws Http2Exception {
            assert dataLength >= 0;

            // Apply the delta. Even if we throw an exception we want to have taken this delta into account.
            window -= dataLength;

            // Window size can become negative if we sent a SETTINGS frame that reduces the
            // size of the transfer window after the peer has written data frames.
            // The value is bounded by the length that SETTINGS frame decrease the window.
            // This difference is stored for the connection when writing the SETTINGS frame
            // and is cleared once we send a WINDOW_UPDATE frame.
            if (window < lowerBound) {
                throw streamError(stream.id(), FLOW_CONTROL_ERROR,
                        "Flow control window exceeded for stream: %d", stream.id());
            }
        }