Example usage for io.netty.channel ChannelHandlerContext alloc

Introduction

In this page you can find the example usage for io.netty.channel ChannelHandlerContext alloc.

Prototype

ByteBufAllocator alloc();

Source Link

Document

Return the assigned ByteBufAllocator which will be used to allocate ByteBuf s.

Usage

From source file:io.lettuce.core.ProtectedModeTests.java

License:Apache License

@BeforeClass
public static void beforeClass() throws Exception {

    server = new MockTcpServer();

    server.addHandler(() -> {//from  w w  w .  j av a2  s . c o  m
        return new ChannelInboundHandlerAdapter() {
            @Override
            public void channelActive(ChannelHandlerContext ctx) throws Exception {

                String message = getMessage();
                ByteBuf buffer = ctx.alloc().buffer(message.length() + 3);
                buffer.writeCharSequence("-", StandardCharsets.US_ASCII);
                buffer.writeCharSequence(message, StandardCharsets.US_ASCII);
                buffer.writeByte('\r').writeByte('\n');

                ctx.writeAndFlush(buffer).addListener(future -> {
                    ctx.close();
                });
            }
        };
    });

    server.initialize(TestSettings.nonexistentPort());

    client = RedisClient.create(TestClientResources.get(),
            RedisURI.create(TestSettings.host(), TestSettings.nonexistentPort()));
}

From source file:io.lettuce.core.protocol.CommandHandler.java

License:Apache License

/**
 * @see io.netty.channel.ChannelInboundHandlerAdapter#channelRegistered(io.netty.channel.ChannelHandlerContext)
 *///  www . ja v  a 2  s  . c o m
@Override
public void channelRegistered(ChannelHandlerContext ctx) throws Exception {

    if (isClosed()) {
        logger.debug("{} Dropping register for a closed channel", logPrefix());
    }

    channel = ctx.channel();

    if (debugEnabled) {
        logPrefix = null;
        logger.debug("{} channelRegistered()", logPrefix());
    }

    setState(LifecycleState.REGISTERED);

    buffer = ctx.alloc().directBuffer(8192 * 8);
    ctx.fireChannelRegistered();
}

From source file:io.lettuce.core.server.RandomServerHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {

    byte[] response = new byte[count];

    Arrays.fill(response, "A".getBytes()[0]);

    ByteBuf buf = ctx.alloc().heapBuffer(response.length);

    ByteBuf encoded = buf.writeBytes(response);
    ctx.writeAndFlush(encoded);//from w w w  . jav a  2s  .com
}

From source file:io.lunamc.plugins.example.netty.ExamplePlayHandler.java

License:Apache License

private void writeJoinGame(ChannelHandlerContext ctx) {
    ByteBuf out = ctx.alloc().buffer();
    // Write packet id of join game (0x23)
    ProtocolUtils.writeVarInt(out, 0x23);
    // Write entity id
    out.writeInt(42);/*www. j  a va  2  s  . c om*/
    // Write game mode (0 = survival)
    out.writeByte(0);
    // Write dimension (0 = overworld)
    out.writeInt(0);
    // Write difficulty (0 = peaceful)
    out.writeByte(0);
    // Write max players
    out.writeByte(1);
    // Write level type
    ProtocolUtils.writeString(out, "default");
    // Write reduced debug info
    out.writeBoolean(false);

    // Send it to the client
    ctx.writeAndFlush(out, ctx.voidPromise());
}

From source file:io.lunamc.plugins.example.netty.ExamplePlayHandler.java

License:Apache License

private void writeBrand(ChannelHandlerContext ctx) {
    ByteBuf data = ctx.alloc().buffer();
    ByteBuf out = ctx.alloc().buffer();/* ww  w. ja v  a 2 s . c  om*/
    try {
        // Write plugin message data
        ProtocolUtils.writeString(data, "LunaMC_Example");

        // Write packet id of plugin message (0x18)
        ProtocolUtils.writeVarInt(out, 0x18);
        // Write channel name
        ProtocolUtils.writeString(out, "MC|Brand");
        // Write plugin message
        ProtocolUtils.writeVarInt(out, data.readableBytes());
        out.writeBytes(data);
    } finally {
        data.release();
    }

    // Send it to the client
    ctx.writeAndFlush(out, ctx.voidPromise());
}

From source file:io.lunamc.plugins.example.netty.ExamplePlayHandler.java

License:Apache License

private void writeKick(ChannelHandlerContext ctx) {
    LOGGER.info("Example play handling done for {}", connection.getProfile());
    TextComponent message = componentBuilderFactory.requireInstance().createTextComponentBuilder().text(
            "Thank you " + connection.getProfile().getName() + " for trying out the LunaMC Example Plugin!")
            .build();/*from   w w w  .  j  a v a2 s  .c  o  m*/
    String json = jsonMapper.requireInstance().serialize(message);

    ByteBuf out = ctx.alloc().buffer();
    // Write packet id of disconnect (0x1a)
    ProtocolUtils.writeVarInt(out, 0x1a);
    // Write reason
    ProtocolUtils.writeString(out, json);

    // Send it to the client and closes the connection
    NettyUtils.writeFlushAndClose(ctx, out);
}

From source file:io.maelstorm.server.example.HelloEndpoint.java

License:Open Source License

public Deferred<FullHttpResponse> process(ChannelHandlerContext context, AggregatedFullHttpRequest request) {
    ByteBuf buffer = context.alloc().buffer();
    buffer.writeBytes(response);//from  www .  j a  v a2 s  .c om
    FullHttpResponse response = new DefaultFullHttpResponse(request.getProtocolVersion(), HttpResponseStatus.OK,
            buffer, false);
    response.headers().add(HttpHeaders.Names.CONTENT_TYPE, "text/html");
    Deferred<FullHttpResponse> deferred = new Deferred<FullHttpResponse>();
    deferred.callback(response);
    return deferred;
}

From source file:io.maelstorm.server.ResponseUtils.java

License:Open Source License

public static Deferred<FullHttpResponse> makeSimpleHtmlResponse(ChannelHandlerContext context,
        HttpVersion version, HttpResponseStatus status, String message) {
    ByteBuf buffer = context.alloc().buffer(message.length());
    buffer.writeBytes(message.getBytes());
    FullHttpResponse response = new DefaultFullHttpResponse(version, status, buffer, false);
    response.headers().set(HttpHeaders.Names.CONTENT_TYPE, "text/html");
    Deferred<FullHttpResponse> deferred = new Deferred<FullHttpResponse>();
    deferred.callback(response);//from w  w w . ja  va  2 s  .c  o  m
    return deferred;
}

From source file:io.maelstorm.server.ShutDownEndpoint.java

License:Open Source License

public Deferred<FullHttpResponse> process(ChannelHandlerContext context, AggregatedFullHttpRequest request) {
    ByteBuf buffer = context.alloc().buffer(resp.length());
    buffer.writeBytes(resp.getBytes());/*from  w ww .  j a  v  a 2s. c om*/
    FullHttpResponse response = new DefaultFullHttpResponse(request.getProtocolVersion(), HttpResponseStatus.OK,
            buffer);
    response.headers().set(HttpHeaders.Names.CONTENT_TYPE, "text/html");
    Deferred<FullHttpResponse> deferred = new Deferred<FullHttpResponse>();
    deferred.callback(response);
    shutDownGracefully();
    super.doShutdown();
    return deferred;
}

From source file:io.moquette.parser.netty.SubAckEncoder.java

License:Open Source License

@Override
protected void encode(ChannelHandlerContext chc, SubAckMessage message, ByteBuf out) {
    if (message.types().isEmpty()) {
        throw new IllegalArgumentException("Found a suback message with empty topics");
    }//from  ww  w .j  av a  2 s  . c o  m

    int variableHeaderSize = 2 + message.types().size();
    ByteBuf buff = chc.alloc().buffer(6 + variableHeaderSize);
    try {
        buff.writeByte(AbstractMessage.SUBACK << 4);
        buff.writeBytes(Utils.encodeRemainingLength(variableHeaderSize));
        buff.writeShort(message.getMessageID());
        for (QOSType c : message.types()) {
            buff.writeByte(c.byteValue());
        }

        out.writeBytes(buff);
    } finally {
        buff.release();
    }
}