Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.sample.netty.socket.server; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelOutboundHandlerAdapter; import io.netty.channel.ChannelPromise; /** * * @author Vitor */ public class ServerHandlerOutbound extends ChannelOutboundHandlerAdapter { @Override public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) { ByteBuf encoded = ctx.alloc().buffer(4); encoded.writeBytes(((String) msg).getBytes()); ctx.writeAndFlush(encoded, promise); System.err.println("[SERVER SEND MENSSAGE] " + msg); } @Override public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) { ctx.close(); } }