Example usage for io.netty.buffer ByteBuf readShort

Introduction

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

Prototype

public abstract short readShort();

Source Link

Document

Gets a 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.

Usage

From source file:eu.matejkormuth.rpgdavid.starving.remote.netty.packets.CommandPacket.java

License:Open Source License

@Override
public void readFrom(ByteBuf fromBuffer) {
    short length = fromBuffer.readShort();
    byte[] array = new byte[length];
    fromBuffer.readBytes(array);/*from   www  . j av a 2  s .c  o  m*/
    this.command = new String(array, PROTOCOL_ENCODING);
}

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From source file:eu.matejkormuth.rpgdavid.starving.remote.netty.packets.DisconnectPacket.java

License:Open Source License

@Override
public void readFrom(ByteBuf fromBuffer) {
    short length = fromBuffer.readShort();
    byte[] array = new byte[length];
    fromBuffer.readBytes(array);/*w ww  .  j  a  v  a 2s  . com*/
    this.reason = new String(array, PROTOCOL_ENCODING);
}

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From source file:gedi.remote.codec.DefaultDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {

    if (in.readableBytes() < Integer.BYTES)
        return;//w w  w  .  ja v  a  2 s . co m

    in.markReaderIndex();
    int size = in.readInt();

    if (in.readableBytes() < size) {
        in.resetReaderIndex();
        return;
    }

    // everything has arrived, decode
    char[] classname = new char[in.readInt()];
    for (int i = 0; i < classname.length; i++)
        classname[i] = (char) (in.readByte() & 255);

    String clsName = String.valueOf(classname);

    if (clsName.length() == 1) {

        switch (clsName) {
        case "A":
            char[] re = new char[in.readInt()];
            for (int i = 0; i < re.length; i++)
                re[i] = (char) (in.readByte() & 255);
            out.add(String.valueOf(re));
            break;
        case "B":
            out.add(in.readByte());
            break;
        case "S":
            out.add(in.readShort());
            break;
        case "I":
            out.add(in.readInt());
            break;
        case "L":
            out.add(in.readLong());
            break;
        case "F":
            out.add(in.readFloat());
            break;
        case "D":
            out.add(in.readDouble());
            break;
        }

    } else {

        if (!ClassPathCache.getInstance().existsClass(clsName)) {
            in.resetReaderIndex();
            return;
        }

        Class<?> cls = Class.forName(clsName);
        BinarySerializable re = (BinarySerializable) cls.newInstance();

        BinaryBlob buff = new BinaryBlob(size - Integer.BYTES - classname.length);
        in.readBytes(buff.getBuffer());
        buff.getBuffer().flip();

        re.deserialize(buff);

        out.add(re);
    }
}

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From source file:gwlpr.protocol.NettyGWCodec.java

License:Open Source License

@Override
public void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> result) {
    ByteBuf buf = in.order(ByteOrder.LITTLE_ENDIAN);

    while (buf.isReadable()) {
        buf.markReaderIndex();//  www  .  ja v  a 2s  .c  o m

        // get the header failsafe
        int header = buf.readableBytes() >= 2 ? buf.readShort() : -1;

        // failcheck
        if (header == -1) {
            return;
        }

        // try get the message class
        Class<? extends GWMessage> messageClazz = getByHeader(header);

        // failcheck
        if (messageClazz == null) {
            buf.resetReaderIndex();
            return;
        }

        // try retrieve the serialization filter
        NettySerializationFilter filter = GWMessageSerializationRegistry.getFilter(messageClazz);

        // failcheck
        if (filter == null) {
            buf.resetReaderIndex();
            return;
        }

        // try create the message
        Message message;
        try {
            message = messageClazz.newInstance();
        } catch (InstantiationException | IllegalAccessException ex) {
            LOGGER.error("Could not create an instance of an message.", ex);

            buf.resetReaderIndex();
            return;
        }

        // dont forget to initialize the message
        message.init(ctx.channel());

        // try serialize the message
        if (!filter.deserialize(buf, message)) {
            buf.resetReaderIndex();
            return;
        }

        // finally add the message
        result.add(message);

        LOGGER.debug("Got: {}", message.toString());
    }
}

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From source file:hellfirepvp.astralsorcery.common.network.packet.server.PktSyncConfig.java

License:Open Source License

@Override
public void fromBytes(ByteBuf buf) {
    int count = buf.readByte();
    fields = new ArrayList<>(count);
    for (int i = 0; i < count; i++) {
        fields.add(new SyncTuple(null, null)); //Empty init
    }/*  w ww  .  j a v  a  2 s .  c om*/

    for (int i = 0; i < count; i++) {
        byte[] data = new byte[buf.readShort()];
        buf.readBytes(data);

        ByteArrayInputStream in = new ByteArrayInputStream(data);
        SyncTuple tuple = null;
        String key = null;
        try {
            key = new DataInputStream(in).readUTF();
            Object value = new ObjectInputStream(in).readObject();
            tuple = new SyncTuple(key, value);
        } catch (Exception ignored) {
        }

        if (tuple == null) {
            fields = null;
            if (key != null) {
                AstralSorcery.log.info("Could not read config from server with key: " + key);
            }
            break;
        }
        fields.set(i, tuple);
    }
}

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From source file:herddb.proto.PduCodec.java

License:Apache License

public static Object readObject(ByteBuf dii) {

    int type = ByteBufUtils.readVInt(dii);

    switch (type) {
    case TYPE_BYTEARRAY:
        return ByteBufUtils.readArray(dii);
    case TYPE_LONG:
        return dii.readLong();
    case TYPE_INTEGER:
        return dii.readInt();
    case TYPE_SHORT:
        return dii.readShort();
    case TYPE_BYTE:
        return dii.readByte();
    case TYPE_STRING:
        return ByteBufUtils.readUnpooledRawString(dii);
    case TYPE_TIMESTAMP:
        return new java.sql.Timestamp(dii.readLong());
    case TYPE_NULL:
        return null;
    case TYPE_BOOLEAN:
        return dii.readBoolean();
    case TYPE_DOUBLE:
        return dii.readDouble();
    default:/*from w w w . j  a v a 2s. co  m*/
        throw new IllegalArgumentException("bad column type " + type);
    }
}

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From source file:hivemall.mix.MixMessageDecoder.java

License:Open Source License

@Override
protected MixMessage decode(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
    ByteBuf frame = (ByteBuf) super.decode(ctx, in);
    if (frame == null) {
        return null;
    }/*from w w w .  ja  v  a  2  s  .  c  o  m*/

    byte b = frame.readByte();
    MixEventName event = MixEventName.resolve(b);
    Object feature = decodeObject(frame);
    float weight = frame.readFloat();
    float covariance = frame.readFloat();
    short clock = frame.readShort();
    int deltaUpdates = frame.readInt();
    boolean cancelRequest = frame.readBoolean();
    String groupID = readString(frame);

    MixMessage msg = new MixMessage(event, feature, weight, covariance, clock, deltaUpdates, cancelRequest);
    msg.setGroupID(groupID);
    return msg;
}

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From source file:io.advantageous.conekt.dns.impl.netty.decoder.MailExchangerDecoder.java

License:Open Source License

/**
 * Returns a decoded MX (mail exchanger) resource record, stored as an
 * instance of {@link MailExchangerRecord}.
 *
 * @param response the {@link DnsResponse} received that contained the resource
 *                 record being decoded/*from w  w  w. ja v  a  2 s  .com*/
 * @param resource the {@link DnsResource} being decoded
 */
@Override
public MailExchangerRecord decode(DnsResponse response, DnsResource resource) {
    ByteBuf packet = response.content().readerIndex(resource.contentIndex());
    int priority = packet.readShort();
    String name = DnsResponseDecoder.readName(packet);
    return new MailExchangerRecord(priority, name);
}

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From source file:io.advantageous.conekt.dns.impl.netty.decoder.ServiceDecoder.java

License:Open Source License

/**
 * Returns a decoded SRV (service) resource record, stored as an instance of
 * {@link ServiceRecord}./*from  ww w. jav  a 2 s.co  m*/
 *
 * @param response the DNS response that contains the resource record being
 *                 decoded
 * @param resource the resource record being decoded
 */
@Override
public ServiceRecord decode(DnsResponse response, DnsResource resource) {
    ByteBuf packet = response.content().readerIndex(resource.contentIndex());
    int priority = packet.readShort();
    int weight = packet.readShort();
    int port = packet.readUnsignedShort();
    String target = DnsResponseDecoder.readName(packet);
    return new ServiceRecord(resource.name(), priority, weight, port, target);
}

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From source file:io.airlift.drift.transport.netty.codec.HeaderTransport.java

License:Apache License

/**
 * Decodes the ByteBuf into a HeaderFrame transferring the reference ownership.
 * @param buffer buffer to be decoded; reference count ownership is transferred to this method
 * @return the decoded frame; caller is responsible for releasing this object
 *//* ww  w . j av  a2s.c o  m*/
public static ThriftFrame decodeFrame(ByteBuf buffer) {
    ByteBuf messageHeader = null;
    try {
        // frame header
        short magic = buffer.readShort();
        verify(magic == HEADER_MAGIC, "Invalid header magic");
        short flags = buffer.readShort();
        boolean outOfOrderResponse;
        switch (flags) {
        case FLAGS_NONE:
            outOfOrderResponse = false;
            break;
        case FLAG_SUPPORT_OUT_OF_ORDER:
            outOfOrderResponse = true;
            break;
        default:
            throw new IllegalArgumentException("Unsupported header flags: " + flags);
        }
        int frameSequenceId = buffer.readInt();
        int headerSize = buffer.readShort() << 2;
        messageHeader = buffer.readBytes(headerSize);

        // encoding info
        byte protocolId = messageHeader.readByte();
        Protocol protocol = Protocol.getProtocolByHeaderTransportId(protocolId);
        byte numberOfTransforms = messageHeader.readByte();
        if (numberOfTransforms > 0) {
            // currently there are only two transforms, a cryptographic extension which is deprecated, and gzip which is too expensive
            throw new IllegalArgumentException("Unsupported transform");
        }

        // headers
        // todo what about duplicate headers?
        ImmutableMap.Builder<String, String> allHeaders = ImmutableMap.builder();
        allHeaders.putAll(decodeHeaders(NORMAL_HEADERS, messageHeader));
        allHeaders.putAll(decodeHeaders(PERSISTENT_HEADERS, messageHeader));

        // message
        ByteBuf message = buffer.readBytes(buffer.readableBytes());

        // header frame wraps message byte buffer, so message should not be release yet
        return new ThriftFrame(frameSequenceId, message, allHeaders.build(), HEADER, protocol,
                outOfOrderResponse);
    } finally {
        // message header in an independent buffer and must be released
        if (messageHeader != null) {
            messageHeader.release();
        }

        // input buffer has been consumed and transformed into a HeaderFrame, so release it
        buffer.release();
    }
}

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