netty server client handler

netty-handler.java

ChannelInboundHandlerAdapter
	@Override 
	public void channelRead(ChannelHandlerContext ctx, Object msg) { 
		System.out.println(ìServer received: ì + msg); 
		ctx.write(msg) #2 
	} 
	@Override 
	public void channelReadComplete(ChannelHandlerContext ctx) { 
		ctx.writeAndFlush(Unpooled.EMPTY_BUFFER) 
		.addListener(ChannelFutureListener.CLOSE); #3 
	} 
	@Override 
	public void exceptionCaught(ChannelHandlerContext ctx, 
		Throwable cause) { 
		cause.printStracktrace(); #4 
		ctx.close(); #5 
	} 
	
SimpleChannelInboundHandlerAdapter
	@Override 
	public void channelActive(ChannelHandlerContext ctx) { 
		ctx.write(Unpooled.copiedBuffer(ìNetty rocks!ì, 
		CharsetUtil.UTF_8); #2 
	} 
	@Override 
	public void channelRead0(ChannelHandlerContext ctx, ByteBuf in) { 
		System.out.println(ìClient received: ì + ByteBufUtil 
		.hexDump(in.readBytes(in.readableBytes())));
	} 
	@Override 
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) { 
		cause.printStracktrace(); 
		ctx.close(); 
	}