Examples of io.netty.channel.ChannelHandlerContext

io.netty.channel.ChannelHandlerContext
handler will receive a sequence of increasing integers starting // from 1. {@code @Override}public void messageReceived( {@link ChannelHandlerContext} ctx, {@link Integer} integer) {{@link Attribute}< {@link Integer}> attr = ctx.getAttr(counter); Integer a = ctx.getAttr(counter).get(); if (a == null) { a = 1; } attr.set(a * integer)); } } // Different context objects are given to "f1", "f2", "f3", and "f4" even if // they refer to the same handler instance. Because the FactorialHandler // stores its state in a context object (as an attachment), the factorial is // calculated correctly 4 times once the two pipelines (p1 and p2) are active. FactorialHandler fh = new FactorialHandler(); {@link ChannelPipeline} p1 = {@link Channels}.pipeline(); p1.addLast("f1", fh); p1.addLast("f2", fh); {@link ChannelPipeline} p2 = {@link Channels}.pipeline(); p2.addLast("f3", fh); p2.addLast("f4", fh);
Additional resources worth reading

Please refer to the {@link ChannelHandler}, and {@link ChannelPipeline} to find out more about inbound and outbound operations,what fundamental differences they have, how they flow in a pipeline, and how to handle the operation in your application.

        HttpContentDecompressor decompressor = p.get(HttpContentDecompressor.class);
        if (decompressor != null) {
            p.remove(decompressor);
        }


        ChannelHandlerContext ctx = p.context(HttpResponseDecoder.class);
        if (ctx == null) {
            ctx = p.context(HttpClientCodec.class);
            if (ctx == null) {
                throw new IllegalStateException("ChannelPipeline does not contain " +
                        "a HttpRequestEncoder or HttpClientCodec");
            }
            p.replace(ctx.name(), "ws-decoder", newWebsocketDecoder());
        } else {
            if (p.get(HttpRequestEncoder.class) != null) {
                p.remove(HttpRequestEncoder.class);
            }
            p.replace(ctx.name(),
                    "ws-decoder", newWebsocketDecoder());
        }
    }

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    /**
     * See {@link #close()}
     */
    public ChannelFuture close(final ChannelPromise future) {
        final ChannelHandlerContext ctx = this.ctx;
        ctx.executor().execute(new Runnable() {
            @Override
            public void run() {
                engine.closeOutbound();
                try {
                    write(ctx, Unpooled.EMPTY_BUFFER, future);

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    }


    @Test(expected = IllegalStateException.class)
    public void testSetMaxCumulationBufferComponentsAfterInit() throws Exception {
        HttpObjectAggregator aggr = new HttpObjectAggregator(Integer.MAX_VALUE);
        ChannelHandlerContext ctx = EasyMock.createMock(ChannelHandlerContext.class);
        EasyMock.replay(ctx);
        aggr.handlerAdded(ctx);
        aggr.setMaxCumulationBufferComponents(10);
    }

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Examples of io.netty.channel.ChannelHandlerContext

Additional resources worth reading

Related Classes of io.netty.channel.ChannelHandlerContext