EchoClientHandler

EchoClientHandler

public class EchoClientHandler extends SimpleChannelInboundHandler<ByteBuf> {
    private AtomicInteger counter = new AtomicInteger(0);
    /**
     * 客户端读取到网络数据后的处理
     */
    @Override
    protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
        System.out.println("client Accept["+msg.toString(CharsetUtil.UTF_8)
                +"] and the counter is:"+counter.incrementAndGet());
    }
    /**
     *  客户端被通知channel活跃后，做事
     */
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        ByteBuf msg = null;
        String request = "Mark,Lison,King,James,Deer"
                + System.getProperty("line.separator");
        for(int i=0;i<100;i++){
            // Unpooled 产生 bytebuf 的工具类
            msg = Unpooled.buffer(request.length());
            msg.writeBytes(request.getBytes());
            ctx.writeAndFlush(msg);
        }
    }
    /*** 发生异常后的处理*/
    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}