a7135e8677
Motivation: The HttpObjectAggregator always responds with a 100-continue response. It should check the Content-Length header to see if the content length is OK, and if not responds with a 417. Modifications: - HttpObjectAggregator checks the Content-Length header in the case of a 100-continue. Result: HttpObjectAggregator responds with 417 if content is known to be too big.
100 lines
3.3 KiB
Java
100 lines
3.3 KiB
Java
/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.http.websocketx;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelPipeline;
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import io.netty.handler.codec.MessageAggregator;
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import io.netty.handler.codec.TooLongFrameException;
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/**
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* Handler that aggregate fragmented WebSocketFrame's.
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*
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* Be aware if PING/PONG/CLOSE frames are send in the middle of a fragmented {@link WebSocketFrame} they will
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* just get forwarded to the next handler in the pipeline.
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*/
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public class WebSocketFrameAggregator
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extends MessageAggregator<WebSocketFrame, WebSocketFrame, ContinuationWebSocketFrame, WebSocketFrame> {
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/**
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* Creates a new instance
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*
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* @param maxContentLength If the size of the aggregated frame exceeds this value,
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* a {@link TooLongFrameException} is thrown.
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*/
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public WebSocketFrameAggregator(int maxContentLength) {
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super(maxContentLength);
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}
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@Override
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protected boolean isStartMessage(WebSocketFrame msg) throws Exception {
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return msg instanceof TextWebSocketFrame || msg instanceof BinaryWebSocketFrame;
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}
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@Override
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protected boolean isContentMessage(WebSocketFrame msg) throws Exception {
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return msg instanceof ContinuationWebSocketFrame;
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}
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@Override
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protected boolean isLastContentMessage(ContinuationWebSocketFrame msg) throws Exception {
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return isContentMessage(msg) && msg.isFinalFragment();
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}
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@Override
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protected boolean isAggregated(WebSocketFrame msg) throws Exception {
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if (msg.isFinalFragment()) {
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return !isContentMessage(msg);
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}
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return !isStartMessage(msg) && !isContentMessage(msg);
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}
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@Override
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protected boolean isContentLengthInvalid(WebSocketFrame start, int maxContentLength) {
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return false;
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}
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@Override
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protected Object newContinueResponse(WebSocketFrame start, int maxContentLength, ChannelPipeline pipeline) {
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return null;
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}
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@Override
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protected boolean closeAfterContinueResponse(Object msg) throws Exception {
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throw new UnsupportedOperationException();
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}
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@Override
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protected boolean ignoreContentAfterContinueResponse(Object msg) throws Exception {
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throw new UnsupportedOperationException();
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}
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@Override
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protected WebSocketFrame beginAggregation(WebSocketFrame start, ByteBuf content) throws Exception {
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if (start instanceof TextWebSocketFrame) {
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return new TextWebSocketFrame(true, start.rsv(), content);
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}
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if (start instanceof BinaryWebSocketFrame) {
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return new BinaryWebSocketFrame(true, start.rsv(), content);
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}
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// Should not reach here.
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throw new Error();
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}
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}
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