Examples of org.jboss.netty.channel.ChannelDownstreamHandler

org.jboss.netty.channel.ChannelDownstreamHandler

ing the event forward (downstream) void handleDownstream( {@link ChannelHandlerContext} ctx, {@link ChannelEvent} e) throws Exception {... ctx.sendDownstream(e); ... } // Sending the event backward (upstream) void handleDownstream( {@link ChannelHandlerContext} ctx, {@link ChannelEvent} e) throws Exception {... ctx.sendUpstream(new DefaultChannelStateEvent(...)); ... }

Using the helper class to fire an event

You will also find various helper methods in {@link Channels} to be usefulto generate and fire an artificial or manipulated event.

Thread safety

{@link #handleDownstream(ChannelHandlerContext,ChannelEvent) handleDownstream}may be invoked by more than one thread simultaneously. If the handler accesses a shared resource or stores stateful information, you might need proper synchronization in the handler implementation.

Also, please refer to the {@link ChannelPipelineCoverage} annotation tounderstand the relationship between a handler and its stateful properties. @author The Netty Project (netty-dev@lists.jboss.org) @author Trustin Lee (tlee@redhat.com) @version $Rev: 247 $, $Date: 2008-09-05 19:58:37 +0900 (Fri, 05 Sep 2008) $

    @Test
    public void testShortFlushes() {
        final int ITERATIONS = 1000000;
        SharedMessageBuffer smb = new SharedMessageBuffer();
        final DecoderEmbedder<TSOMessage> decoder = new DecoderEmbedder<TSOMessage>(new TSODecoder(new Zipper()));
        ChannelDownstreamHandler handler = new SimpleChannelDownstreamHandler();
        EncoderEmbedder<ChannelBuffer> encoder = new EncoderEmbedder<ChannelBuffer>(handler);
        ChannelHandlerContext ctx = encoder.getPipeline().getContext(handler);
        Channel channel = ctx.getChannel();
        ReadingBuffer rb = smb.getReadingBuffer(ctx);
        rb.initializeIndexes();

    @Test
    public void testLongFlushes() {
        final int ITERATIONS = 1000000;
        SharedMessageBuffer smb = new SharedMessageBuffer();
        final DecoderEmbedder<TSOMessage> decoder = new DecoderEmbedder<TSOMessage>(new TSODecoder(new Zipper()));
        ChannelDownstreamHandler handler = new SimpleChannelDownstreamHandler();
        EncoderEmbedder<ChannelBuffer> encoder = new EncoderEmbedder<ChannelBuffer>(handler);
        ChannelHandlerContext ctx = encoder.getPipeline().getContext(handler);
        Channel channel = ctx.getChannel();
        ReadingBuffer rb = smb.getReadingBuffer(ctx);
        rb.initializeIndexes();