Example usage for io.netty.buffer ByteBuf readerIndex

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf readerIndex.

Prototype

public abstract int readerIndex();

Source Link

Document

Returns the readerIndex of this buffer.

Usage

From source file:Http2ClientConnectionHandler.java

License:Apache License

@Override
public void onDataRead(ChannelHandlerContext ctx, int streamId, ByteBuf data, int padding, boolean endOfStream,
        boolean endOfSegment) throws Http2Exception {

    // Copy the data into the buffer.
    int available = data.readableBytes();
    if (collectedData == null) {
        collectedData = ctx().alloc().buffer(available);
        collectedData.writeBytes(data, data.readerIndex(), data.readableBytes());
    } else {//from   www . j av  a  2s. c om
        // Expand the buffer
        ByteBuf newBuffer = ctx().alloc().buffer(collectedData.readableBytes() + available);
        newBuffer.writeBytes(collectedData);
        newBuffer.writeBytes(data);
        collectedData.release();
        collectedData = newBuffer;
    }

    // If it's the last frame, print the complete message.
    if (endOfStream) {
        //      System.out.println("Received message: " + collectedData.toString(CharsetUtil.UTF_8));

        final OutstandingRequest outstandingRequest = outstanding.remove(streamId);
        outstandingRequest.finish(collectedData);

        // Free the data buffer.
        collectedData.release();
        collectedData = null;
    }
}

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From source file:appeng.core.sync.packets.PacketJEIRecipe.java

License:Open Source License

public PacketJEIRecipe(final ByteBuf stream) throws IOException {
    final ByteArrayInputStream bytes = new ByteArrayInputStream(stream.array());
    bytes.skip(stream.readerIndex());
    final NBTTagCompound comp = CompressedStreamTools.readCompressed(bytes);
    if (comp != null) {
        this.recipe = new ItemStack[9][];
        for (int x = 0; x < this.recipe.length; x++) {
            final NBTTagList list = comp.getTagList("#" + x, 10);
            if (list.tagCount() > 0) {
                this.recipe[x] = new ItemStack[list.tagCount()];
                for (int y = 0; y < list.tagCount(); y++) {
                    this.recipe[x][y] = ItemStack.loadItemStackFromNBT(list.getCompoundTagAt(y));
                }/* www.j  av a2 s  . c  o  m*/
            }
        }
    }
}

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From source file:appeng.core.sync.packets.PacketNEIRecipe.java

License:Open Source License

public PacketNEIRecipe(final ByteBuf stream) throws IOException {
    final ByteArrayInputStream bytes = new ByteArrayInputStream(stream.array());
    bytes.skip(stream.readerIndex());
    final NBTTagCompound comp = CompressedStreamTools.readCompressed(bytes);
    if (comp != null) {
        this.recipe = new ItemStack[9][];
        for (int x = 0; x < this.recipe.length; x++) {
            final NBTTagList list = comp.getTagList("#" + x, 10);
            if (list.tagCount() > 0) {
                this.recipe[x] = new ItemStack[list.tagCount()];
                for (int y = 0; y < list.tagCount(); y++) {
                    this.recipe[x][y] = ItemStack.loadItemStackFromNBT(list.getCompoundTagAt(y));
                }//from   w  ww.  j a  v  a 2 s .  c  om
            }
        }
    }
}

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From source file:appeng.core.sync.packets.PacketValueConfig.java

License:Open Source License

public PacketValueConfig(final ByteBuf stream) throws IOException {
    final DataInputStream dis = new DataInputStream(
            new ByteArrayInputStream(stream.array(), stream.readerIndex(), stream.readableBytes()));
    this.Name = dis.readUTF();
    this.Value = dis.readUTF();
    // dis.close();
}

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From source file:at.yawk.accordion.compression.SnappyCompressor.java

License:Mozilla Public License

private static byte[] toArray(ByteBuf raw) {
    return Arrays.copyOfRange(raw.array(), raw.arrayOffset() + raw.readerIndex(),
            raw.arrayOffset() + raw.readerIndex() + raw.readableBytes());
}

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From source file:at.yawk.accordion.distributed.ConnectionManager.java

License:Mozilla Public License

/**
 * Handle a raw (encoded) message from the given connection.
 *//* w ww . j a va 2 s  .  c o  m*/
private void handleRawMessage(Connection connection, ByteBuf message) {
    int startIndex = message.readerIndex();

    receivedPacketCountIncludingDuplicates.incrementAndGet();

    // read packet ID
    long packetId = message.readLong();
    if (!packetDistinctionHandler.register(packetId)) {
        // already received, do not handle again
        Log.debug(logger, () -> "Duplicate packet " + packetId);
        return;
    }

    // mark heartbeat as alive
    // not doing this before distinction check should be enough because only duplicate packets over 3s is a problem
    // anyway
    heartbeatManager.markAlive(connection);

    receivedPacketCount.incrementAndGet();

    Stream<Connection> forwards = handleDecodedMessage(connection, compressor.decode(message), packetId);

    // reset reader index so we can copy the message
    message.readerIndex(startIndex);
    // forward packet to other connections that listen to this channel
    forwards
            // except the origin of the packet (they already got it)
            .filter(other -> other != connection)
            // send
            .forEach(other -> copyAndSend(other, message));
}

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From source file:at.yawk.dbus.protocol.auth.CommandCodec.java

protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    int crlfPos = in.forEachByte(new CRLFFinder());
    if (crlfPos == -1) {
        return;/*from   w  w w .  jav a2s .co  m*/
    }

    int start = in.readerIndex();
    int end = crlfPos - 1; // remove trailing crlf
    String commandString = in.toString(start, end - start, CHARSET);
    log.trace("Received message {}", commandString);
    in.readerIndex(crlfPos + 1);

    int sep = commandString.indexOf(' ');
    String commandName = sep == -1 ? commandString : commandString.substring(0, sep);
    Function<List<String>, Command> factory = FACTORIES.get(commandName);
    if (factory != null) {
        List<String> args;
        if (sep == -1) {
            args = Collections.emptyList();
        } else {
            args = Arrays.asList(commandString.substring(sep + 1).split(" "));
        }
        out.add(factory.apply(args));
    }
}

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From source file:at.yawk.dbus.protocol.codec.MessageHeaderCodec.java

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf rawBuf, List<Object> out) throws Exception {
    if (toRead != 0) {
        if (rawBuf.readableBytes() < toRead) {
            return;
        }//from  ww  w . j  a  v  a2 s. c  om
        ByteBuf slice = rawBuf.slice().order(byteOrder);
        slice.writerIndex(slice.readerIndex() + toRead);
        slice.retain();
        AlignableByteBuf decoding = AlignableByteBuf.decoding(slice);
        log.trace("INBOUND {}", decoding);
        out.add(decoding);

        rawBuf.readerIndex(rawBuf.readerIndex() + toRead);
        toRead = 0;
    }

    if (rawBuf.readableBytes() < MIN_HEADER_LENGTH) {
        return;
    }

    rawBuf.markReaderIndex();
    byte endianness = rawBuf.readByte();
    ByteOrder order;
    switch (endianness) {
    case 'l':
        order = ByteOrder.LITTLE_ENDIAN;
        break;
    case 'B':
        order = ByteOrder.BIG_ENDIAN;
        break;
    default:
        throw new DecoderException("Unknown byte order byte " + endianness);
    }

    AlignableByteBuf buf = AlignableByteBuf.decoding(rawBuf.resetReaderIndex().order(order));

    buf.getBuffer().markReaderIndex();
    buf.readByte(); // skip endianness byte we read above

    @Nullable
    MessageType type = MessageType.byId(buf.readByte());
    byte flags = buf.readByte();
    byte majorProtocolVersion = buf.readByte();
    if (majorProtocolVersion != PROTOCOL_VERSION) {
        throw new DecoderException("Unsupported major protocol version " + majorProtocolVersion);
    }
    long bodyLength = buf.readUnsignedInt();
    int serial = buf.readInt();

    MessageHeader header = new MessageHeader();
    header.setByteOrder(order);
    header.setMessageType(type);
    header.setNoReplyExpected((flags & NO_REPLY_EXPECTED) != 0);
    header.setNoAutoStart((flags & NO_AUTO_START) != 0);
    header.setAllowInteractiveAuthorization((flags & ALLOW_INTERACTIVE_AUTHORIZATION) != 0);
    header.setMajorProtocolVersion(majorProtocolVersion);
    header.setMessageBodyLength(bodyLength);
    header.setSerial(serial);
    header.setHeaderFields(new EnumMap<>(HeaderField.class));

    ArrayObject headers = (ArrayObject) tryDecode(HEADER_FIELD_LIST_TYPE, buf);
    if (headers == null) {
        // not enough data
        buf.getBuffer().resetReaderIndex();
        return;
    }
    for (DbusObject struct : headers.getValues()) {
        HeaderField field = HeaderField.byId(struct.get(0).byteValue());
        if (field != null) {
            DbusObject value = struct.get(1).getValue();
            if (!value.getType().equals(field.getType())) {
                throw new DecoderException("Invalid header type on " + field + ": got " + value.getType()
                        + " but expected " + field.getType());
            }
            header.getHeaderFields().put(field, value);
        }
    }

    if (type != null) {
        checkRequiredHeaderFieldsPresent(header);
    }

    if (!buf.canAlignRead(8)) {
        buf.getBuffer().resetReaderIndex();
        return;
    }
    buf.alignRead(8);

    toRead = Math.toIntExact(header.getMessageBodyLength());
    byteOrder = order;
    out.add(header);
}

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From source file:at.yawk.dbus.protocol.DbusUtil.java

public static String printHex(ByteBuf buf) {
    byte[] bytes = new byte[buf.readableBytes()];
    buf.getBytes(buf.readerIndex(), bytes);
    return printHex(bytes);
}

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From source file:at.yawk.dbus.protocol.object.AlignableByteBuf.java

public static AlignableByteBuf decoding(ByteBuf wrapping, int baseAlignment) {
    return new AlignableByteBuf(wrapping, -wrapping.readerIndex(), baseAlignment);
}

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