MsgEchoClientHandler Class — netty Architecture

Source Code

example/src/main/java/io/netty/example/udt/echo/message/MsgEchoClientHandler.java lines 30–64

public class MsgEchoClientHandler extends SimpleChannelInboundHandler<UdtMessage> {

    private final UdtMessage message;

    public MsgEchoClientHandler() {
        super(false);
        final ByteBuf byteBuf = Unpooled.buffer(MsgEchoClient.SIZE);
        for (int i = 0; i < byteBuf.capacity(); i++) {
            byteBuf.writeByte((byte) i);
        }
        message = new UdtMessage(byteBuf);
    }

    @Override
    public void channelActive(final ChannelHandlerContext ctx) {
        System.err.println("ECHO active " + NioUdtProvider.socketUDT(ctx.channel()).toStringOptions());
        ctx.writeAndFlush(message);
    }

    @Override
    public void channelRead0(ChannelHandlerContext ctx, UdtMessage msg) {
        ctx.write(msg);
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        ctx.flush();
    }

    @Override
    public void exceptionCaught(final ChannelHandlerContext ctx, final Throwable cause) {
        cause.printStackTrace();
        ctx.close();
    }
}