Examples of LengthFieldPrepender

io.netty.handler.codec.LengthFieldPrepender
An encoder that prepends the length of the message. The length value is prepended as a binary form.
For example, {@link LengthFieldPrepender}(2) will encode the following 12-bytes string:
```
 +----------------+ | "HELLO, WORLD" | +----------------+ 
```
into the following:
```
 +--------+----------------+ + 0x000C | "HELLO, WORLD" | +--------+----------------+ 
```
If you turned on the {@code lengthIncludesLengthFieldLength} flag in theconstructor, the encoded data would look like the following (12 (original data) + 2 (prepended data) = 14 (0xE)):
```
 +--------+----------------+ + 0x000E | "HELLO, WORLD" | +--------+----------------+ 
```
org.jboss.netty.handler.codec.frame.LengthFieldPrepender
An encoder that prepends the length of the message. The length value is prepended as a binary form. It is encoded in either big endian or little endian depending on the default {@link ByteOrder} of the current{@link ChannelBufferFactory}.
For example, {@link LengthFieldPrepender}(2) will encode the following 12-bytes string:
```
 +----------------+ | "HELLO, WORLD" | +----------------+ 
```
into the following:
```
 +--------+----------------+ + 0x000C | "HELLO, WORLD" | +--------+----------------+ 
```
If you turned on the {@code lengthIncludesLengthFieldLength} flag in theconstructor, the encoded data would look like the following (12 (original data) + 2 (prepended data) = 14 (0xE)):
```
 +--------+----------------+ + 0x000E | "HELLO, WORLD" | +--------+----------------+ 
```
@author The Netty Project (netty-dev@lists.jboss.org) @author Trustin Lee (tlee@redhat.com) @version $Rev: 1437 $, $Date: 2009-06-18 20:29:29 +0900 (Thu, 18 Jun 2009) $

Examples of io.netty.handler.codec.LengthFieldPrepender

              .option(ChannelOption.SO_KEEPALIVE, true)
              .handler(new ChannelInitializer<SocketChannel>() {
                @Override
                protected void initChannel(SocketChannel socketChannel) throws Exception {
                  socketChannel.pipeline().addLast(
                      new LengthFieldPrepender(LENGTH_FIELD_LENGTH, true));
                }
              });
    }
  }

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Examples of io.netty.handler.codec.LengthFieldPrepender


        StringDecoder stringDecoder = new StringDecoder();
        registry.bind("length-decoder", lengthDecoder);
        registry.bind("string-decoder", stringDecoder);


        LengthFieldPrepender lengthEncoder = new LengthFieldPrepender(4);
        StringEncoder stringEncoder = new StringEncoder();
        registry.bind("length-encoder", lengthEncoder);
        registry.bind("string-encoder", stringEncoder);


        List<ChannelHandler> decoders = new ArrayList<ChannelHandler>();

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Examples of io.netty.handler.codec.LengthFieldPrepender

    RxNetty.createTcpClient(params.getHost(), params.getPort(), new PipelineConfiguratorComposite<RemoteRxEvent, RemoteRxEvent>(
        new PipelineConfigurator<RemoteRxEvent, RemoteRxEvent>(){
          @Override
          public void configureNewPipeline(ChannelPipeline pipeline) {
//            pipeline.addFirst(new LoggingHandler(LogLevel.ERROR)); // uncomment to enable debug logging        
            pipeline.addLast("frameEncoder", new LengthFieldPrepender(4)); // 4 bytes to encode length
            pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(524288, 0, 4, 0, 4)); // max frame = half MB
          }
        }, new RxEventPipelineConfigurator()))
      .connect()
      // send subscription request, get input stream

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Examples of io.netty.handler.codec.LengthFieldPrepender

      = RxNetty.createTcpServer(port, new PipelineConfiguratorComposite<RemoteRxEvent, RemoteRxEvent>(
        new PipelineConfigurator<RemoteRxEvent, RemoteRxEvent>(){
          @Override
          public void configureNewPipeline(ChannelPipeline pipeline) {
//            pipeline.addFirst(new LoggingHandler(LogLevel.ERROR)); // uncomment to enable debug logging  
            pipeline.addLast("frameEncoder", new LengthFieldPrepender(4)); // 4 bytes to encode length
            pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(524288, 0, 4, 0, 4)); // max frame = half MB
          }
        }, new RxEventPipelineConfigurator()),   
        new RemoteObservableConnectionHandler(configuredObservables, builder.getIngressPolicy(), blockUntilCompleted,
            metrics));

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Examples of io.netty.handler.codec.LengthFieldPrepender

        msg = copiedBuffer("A", CharsetUtil.ISO_8859_1);
    }


    @Test
    public void testPrependLength() throws Exception {
        final EmbeddedChannel ch = new EmbeddedChannel(new LengthFieldPrepender(4));
        ch.writeOutbound(msg);
        ByteBuf buf = ch.readOutbound();
        assertEquals(4, buf.readableBytes());
        assertEquals(msg.readableBytes(), buf.readInt());
        buf.release();

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Examples of io.netty.handler.codec.LengthFieldPrepender

        buf.release();
    }


    @Test
    public void testPrependLengthIncludesLengthFieldLength() throws Exception {
        final EmbeddedChannel ch = new EmbeddedChannel(new LengthFieldPrepender(4, true));
        ch.writeOutbound(msg);
        ByteBuf buf = ch.readOutbound();
        assertEquals(4, buf.readableBytes());
        assertEquals(5, buf.readInt());
        buf.release();

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Examples of io.netty.handler.codec.LengthFieldPrepender

        buf.release();
    }


    @Test
    public void testPrependAdjustedLength() throws Exception {
        final EmbeddedChannel ch = new EmbeddedChannel(new LengthFieldPrepender(4, -1));
        ch.writeOutbound(msg);
        ByteBuf buf = ch.readOutbound();
        assertEquals(4, buf.readableBytes());
        assertEquals(msg.readableBytes() - 1, buf.readInt());
        buf.release();

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Examples of io.netty.handler.codec.LengthFieldPrepender

        buf.release();
    }


    @Test
    public void testAdjustedLengthLessThanZero() throws Exception {
        final EmbeddedChannel ch = new EmbeddedChannel(new LengthFieldPrepender(4, -2));
        try {
            ch.writeOutbound(msg);
            fail(EncoderException.class.getSimpleName() + " must be raised.");
        } catch (EncoderException e) {
            // Expected

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Examples of org.jboss.netty.handler.codec.frame.LengthFieldPrepender

    }


    public ChannelPipeline getPipeline() throws Exception {
        ChannelPipeline pipeline = pipeline();
        pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(maxFrameSize, 0, 4, 0, 4));
        pipeline.addLast("frameEncoder", new LengthFieldPrepender(4));
        pipeline.addLast("thriftHandler", (ChannelHandler)handler);
        return pipeline;
    }

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Examples of org.jboss.netty.handler.codec.frame.LengthFieldPrepender

        if (client.getSslFactory() != null) {
            pipeline.addLast("ssl", new SslHandler(client.getSslFactory().getEngine()));
        }
        pipeline.addLast("lengthbaseddecoder", new LengthFieldBasedFrameDecoder(client.getConfiguration()
                         .getMaximumMessageSize(), 0, 4, 0, 4));
        pipeline.addLast("lengthprepender", new LengthFieldPrepender(4));


        pipeline.addLast("protobufdecoder", new ProtobufDecoder(PubSubProtocol.PubSubResponse.getDefaultInstance()));
        pipeline.addLast("protobufencoder", new ProtobufEncoder());


        pipeline.addLast("responsehandler", new ResponseHandler(client));

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