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:org.beaconmc.network.socket.pipeline.PacketCompression.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> objects)
        throws Exception {

    int index = byteBuf.readerIndex();

    PacketSerializer inPacketSerializer = new PacketSerializer(byteBuf);

    int uncompressedSize = inPacketSerializer.readVarInt();

    if (uncompressedSize == 0) {
        int length = byteBuf.readableBytes();
        if (length >= threshold) {
            throw new IllegalArgumentException("Received uncompressed packet");
        }/* www .j a va2  s .  c o m*/

        ByteBuf outByteBuf = channelHandlerContext.alloc().buffer(length);
        byteBuf.readBytes(outByteBuf, length);
        objects.add(outByteBuf);
    } else {
        byte[] source = new byte[byteBuf.readableBytes()];
        byteBuf.readBytes(source);
        this.inflater.setInput(source);

        byte[] output = new byte[uncompressedSize];
        int resultLength = this.inflater.inflate(output);
        this.inflater.reset();

        if (resultLength == 0) {
            byteBuf.readerIndex(index);
            byteBuf.retain();
            objects.add(byteBuf);
        } else if (resultLength != uncompressedSize) {
            throw new IllegalStateException("Received compressed packet with invalid length");
        } else {
            objects.add(Unpooled.wrappedBuffer(output));
        }

    }

}

From source file:org.beaconmc.network.socket.pipeline.PacketEncoder.java

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, PacketOut in, List<Object> out) throws Exception {
    Integer id = protocol.getId(in.getClass(), ProtocolDirection.OUT);

    if (id == null) {
        ErrorStream.handle(/*from  w w w  .  ja  v a2s. c om*/
                new IOException("Tried to serialize unregistered packet " + in.getClass().getSimpleName()));
    } else {
        //DebugStream.handle("Packet id "+id);
        ByteBuf buf = ctx.alloc().buffer();
        PacketSerializer packetSerializer = new PacketSerializer(buf);
        packetSerializer.writeVarInt(id);
        in.write(packetSerializer, this.protocolVersion);
        out.add(packetSerializer.getByteBuf());
    }
}

From source file:org.beaconmc.network.socket.pipeline.PacketFraming.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    in.markReaderIndex();/* ww  w  .  j  a v  a 2 s .  c om*/
    if (!readableVarInt(in)) {
        return;
    }
    int length = readVarInt(in);
    if (in.readableBytes() < length) {
        in.resetReaderIndex();
        return;
    }
    ByteBuf buf = ctx.alloc().buffer(length);
    in.readBytes(buf, length);
    out.add(buf);
}

From source file:org.bermuda.cartilage.core.ConnectionController.java

License:Apache License

@Override
public void channelActive(final ChannelHandlerContext ctx) {
    final ByteBuf message = ctx.alloc().buffer(4);
    message.writeInt(12345);/*from  ww w.j a  v  a2  s. c o m*/
    final ChannelFuture future = ctx.writeAndFlush(message);
    future.addListener(f -> {
        if (f.isSuccess()) {
            session = new UserSession(ctx.channel());
            logger.info("Message sent");
        }
    });
}

From source file:org.bermuda.cartilage.core.PacketEncoder.java

License:Apache License

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
    ByteBuf buf = ctx.alloc().buffer(2);
    byte[] data = new BigInteger((String) msg).modPow(Stream.getRSAExponent(), Stream.getRSAModulus())
            .toByteArray();//from   ww  w.  j ava2 s .  c o m
    buf.writeBytes(data);
    ctx.write(buf, promise);
}

From source file:org.bridje.http.impl.HttpServerChannelHandler.java

License:Apache License

private void handleRequest(ChannelHandlerContext ctx) throws IOException {
    if (resp == null) {
        resp = new HttpBridletResponseImpl(ctx.alloc().buffer());
    }//  w w w .  j  a va  2  s . c o m
    RootHttpBridlet rootHandler = Ioc.context().find(RootHttpBridlet.class);
    context.set(HttpBridletRequest.class, req);
    context.set(HttpBridletResponse.class, resp);
    rootHandler.handle(context);
    sendResponse(ctx);
}

From source file:org.ch24.networking.game.client.DiscardClientHandler.java

License:Apache License

@Override
public void channelActive(ChannelHandlerContext ctx) {
    this.ctx = ctx;
    this.cnt = 1;
    this.exponent = 1;

    // Initialize the message.
    //        content = ctx.alloc().directBuffer(DiscardClient.SIZE).writeZero(DiscardClient.SIZE).writeBytes("alma".getBytes());
    content = ctx.alloc().buffer();

    // Send the initial messages.
    generateTraffic();//from  w w  w.  j  a v  a 2s . com
    //sendMsg();
}

From source file:org.clitherproject.clither.server.net.PacketEncoder.java

License:Open Source License

@SuppressWarnings({ "deprecation", "unchecked", "rawtypes" })
@Override/*from w  w  w . ja v  a2  s .com*/
protected void encode(ChannelHandlerContext ctx, Packet packet, List out) throws Exception {
    ByteBuf buf = ctx.alloc().buffer().order(ByteOrder.BIG_ENDIAN);
    int packetId = PacketRegistry.CLIENTBOUND.getPacketId(packet.getClass());
    if (packetId == -1) {
        throw new IllegalArgumentException("Provided packet is not registered as a clientbound packet!");
    }

    buf.writeByte(packetId);
    packet.writeData(buf);
    out.add(new BinaryWebSocketFrame(buf));

    ClitherServer.log.finest("Sent packet " + " (" + packet.getClass().getSimpleName() + ") to "
            + ctx.channel().remoteAddress());
}

From source file:org.codice.alliance.video.stream.mpegts.netty.RawUdpDataToMTSPacketDecoder.java

License:Open Source License

@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
    byteBuf = ctx.alloc().buffer(BUFFER_SIZE);
}

From source file:org.dcache.xrootd.core.XrootdSigverDecoder.java

License:Open Source License

/**
 *  A signature consists of a SHA-256 hash of
 *    1. an unsigned 64-bit sequence number,
 *    2. the request header, and//ww w.ja va 2  s.com
 *    3. the request payload,
 *  in that exact order.
 *
 *  In this case, 2 + 3 are given in order by the frame buffer, which
 *  contains the raw bytes of the request.
 */
private byte[] generateHash(long seqno, byte[] payload, ChannelHandlerContext ctx) throws XrootdException {
    ByteBuf buffer = ctx.alloc().buffer(8 + payload.length);
    try {
        buffer.writeLong(seqno);
        buffer.writeBytes(payload);
        byte[] contents = new byte[buffer.readableBytes()];
        buffer.getBytes(0, contents);

        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        return digest.digest(contents);
    } catch (NoSuchAlgorithmException e) {
        throw new XrootdException(kXR_error, e.toString());
    } finally {
        buffer.release();
    }
}