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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you 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:
 *
 *   https://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, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.codec.spdy;

import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageCodec;
import io.netty.handler.codec.http.HttpMessage;
import io.netty.handler.codec.spdy.SpdyHttpHeaders.Names;
import io.netty.util.ReferenceCountUtil;

import java.util.ArrayDeque;
import java.util.List;
import java.util.Queue;

/**
 * {@link MessageToMessageCodec} that takes care of adding the right {@link SpdyHttpHeaders.Names#STREAM_ID} to the
 * {@link HttpMessage} if one is not present. This makes it possible to just re-use plan handlers current used
 * for HTTP.
 */
public class SpdyHttpResponseStreamIdHandler extends
        MessageToMessageCodec {
    private static final Integer NO_ID = -1;
    private final Queue ids = new ArrayDeque();

    @Override
    public boolean acceptInboundMessage(Object msg) throws Exception {
        return msg instanceof HttpMessage || msg instanceof SpdyRstStreamFrame;
    }

    @Override
    protected void encode(ChannelHandlerContext ctx, HttpMessage msg, List out) throws Exception {
        Integer id = ids.poll();
        if (id != null && id.intValue() != NO_ID && !msg.headers().contains(SpdyHttpHeaders.Names.STREAM_ID)) {
            msg.headers().setInt(Names.STREAM_ID, id);
        }

        out.add(ReferenceCountUtil.retain(msg));
    }

    @Override
    protected void decode(ChannelHandlerContext ctx, Object msg, List out) throws Exception {
        if (msg instanceof HttpMessage) {
            boolean contains = ((HttpMessage) msg).headers().contains(SpdyHttpHeaders.Names.STREAM_ID);
            if (!contains) {
                ids.add(NO_ID);
            } else {
                ids.add(((HttpMessage) msg).headers().getInt(Names.STREAM_ID));
            }
        } else if (msg instanceof SpdyRstStreamFrame) {
            ids.remove(((SpdyRstStreamFrame) msg).streamId());
        }

        out.add(ReferenceCountUtil.retain(msg));
    }
}
    

    

    

            

    

            



    
    






    
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