/*
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 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
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package io.undertow.protocols.http2;

import java.nio.ByteBuffer;
import org.xnio.Bits;

Parses the data frame. If the passing flag has not been set then there is nothing to parse.
Author:Stuart Douglas
/** * Parses the data frame. If the passing flag has not been set then there is nothing to parse. * * @author Stuart Douglas */
class Http2DataFrameParser extends Http2PushBackParser { private int padding = 0; Http2DataFrameParser(int frameLength) { super(frameLength); } @Override protected void handleData(ByteBuffer resource, Http2FrameHeaderParser headerParser) throws ConnectionErrorException { if (Bits.anyAreClear(headerParser.flags, Http2Channel.DATA_FLAG_PADDED)) { finish(); return; } if(headerParser.length == 0) { //empty frame with padding set //which is wrong throw new ConnectionErrorException(Http2Channel.ERROR_PROTOCOL_ERROR); } if (resource.remaining() > 0) { padding = resource.get() & 0xFF; headerParser.length--; //decrement the length by one as we have consumed a byte if(padding > headerParser.length) { throw new ConnectionErrorException(Http2Channel.ERROR_PROTOCOL_ERROR); } finish(); } } int getPadding() { return padding; } }