TelnetServerInitializer Class — netty Architecture

Source Code

example/src/main/java/io/netty/example/telnet/TelnetServerInitializer.java lines 30–60

public class TelnetServerInitializer extends ChannelInitializer<SocketChannel> {

    private static final StringDecoder DECODER = new StringDecoder();
    private static final StringEncoder ENCODER = new StringEncoder();

    private static final TelnetServerHandler SERVER_HANDLER = new TelnetServerHandler();

    private final SslContext sslCtx;

    public TelnetServerInitializer(SslContext sslCtx) {
        this.sslCtx = sslCtx;
    }

    @Override
    public void initChannel(SocketChannel ch) throws Exception {
        ChannelPipeline pipeline = ch.pipeline();

        if (sslCtx != null) {
            pipeline.addLast(sslCtx.newHandler(ch.alloc()));
        }

        // Add the text line codec combination first,
        pipeline.addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
        // the encoder and decoder are static as these are sharable
        pipeline.addLast(DECODER);
        pipeline.addLast(ENCODER);

        // and then business logic.
        pipeline.addLast(SERVER_HANDLER);
    }
}