Java tutorial
/* * Copyright 2014 Netflix, Inc. * * Licensed 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 * * http://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.reactivex.netty.pipeline; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelDuplexHandler; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelPipeline; import io.netty.channel.ChannelPromise; /** * @author Nitesh Kant */ public class ByteArrayPipelineConfigurator implements PipelineConfigurator<byte[], byte[]> { @Override public void configureNewPipeline(ChannelPipeline pipeline) { pipeline.addLast(new ChannelDuplexHandler() { @Override public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { boolean handled = false; if (ByteBuf.class.isAssignableFrom(msg.getClass())) { ByteBuf byteBuf = (ByteBuf) msg; if (byteBuf.isReadable()) { int readableBytes = byteBuf.readableBytes(); byte[] msgToPass = new byte[readableBytes]; byteBuf.readBytes(msgToPass); handled = true; ctx.fireChannelRead(msgToPass); } } if (!handled) { super.channelRead(ctx, msg); } } @Override public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception { if (msg instanceof byte[]) { byte[] msgAsBytes = (byte[]) msg; ByteBuf byteBuf = ctx.alloc().buffer(msgAsBytes.length).writeBytes(msgAsBytes); super.write(ctx, byteBuf, promise); } else { super.write(ctx, msg, promise); // pass-through } } }); } }