Example usage for io.netty.buffer ByteBuf readUnsignedShort

Introduction

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

Prototype

public abstract int readUnsignedShort();

Source Link

Document

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

Usage

From source file:io.netlibs.bgp.netty.codec.UpdatePacketDecoder.java

License:Apache License

private MultiProtocolUnreachableNLRI decodeMpUnreachNlriPathAttribute(final ByteBuf buffer) {
    final MultiProtocolUnreachableNLRI attr = new MultiProtocolUnreachableNLRI();

    try {/*from w ww  .  j ava2s  . c o m*/
        attr.setAddressFamily(AddressFamily.fromCode(buffer.readUnsignedShort()));
        attr.setSubsequentAddressFamily(SubsequentAddressFamily.fromCode(buffer.readUnsignedByte()));

        while (buffer.isReadable()) {
            attr.getNlris().add(NLRICodec.decodeNLRI(buffer));
        }
    } catch (final RuntimeException e) {
        throw new OptionalAttributeErrorException();
    }

    return attr;
}

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From source file:io.netlibs.bgp.netty.codec.UpdatePacketDecoder.java

License:Apache License

private List<PathAttribute> decodePathAttributes(final ByteBuf buffer) {

    final List<PathAttribute> attributes = new LinkedList<PathAttribute>();

    while (buffer.isReadable()) {

        buffer.markReaderIndex();//from  w  ww.j a v a2s .co m

        try {

            final int flagsType = buffer.readUnsignedShort();

            final boolean optional = ((flagsType & BGPv4Constants.BGP_PATH_ATTRIBUTE_OPTIONAL_BIT) != 0);
            final boolean transitive = ((flagsType & BGPv4Constants.BGP_PATH_ATTRIBUTE_TRANSITIVE_BIT) != 0);
            final boolean partial = ((flagsType & BGPv4Constants.BGP_PATH_ATTRIBUTE_PARTIAL_BIT) != 0);
            final int typeCode = (flagsType & BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_MASK);

            int valueLength = 0;

            if ((flagsType & BGPv4Constants.BGP_PATH_ATTRIBUTE_EXTENDED_LENGTH_BIT) != 0) {
                valueLength = buffer.readUnsignedShort();
            } else {
                valueLength = buffer.readUnsignedByte();
            }

            // final ByteBuf valueBuffer = Unpooled.buffer(valueLength);
            // buffer.readBytes(valueBuffer);

            final ByteBuf valueBuffer = buffer.readBytes(valueLength);

            PathAttribute attr = null;

            switch (typeCode) {
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_AGGREGATOR:
                attr = this.decodeAggregatorPathAttribute(valueBuffer, ASType.AS_NUMBER_2OCTETS);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_AS4_AGGREGATOR:
                attr = this.decodeAggregatorPathAttribute(valueBuffer, ASType.AS_NUMBER_4OCTETS);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_AS4_PATH:
                attr = this.decodeASPathAttribute(valueBuffer, ASType.AS_NUMBER_4OCTETS);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_AS_PATH:
                attr = this.decodeASPathAttribute(valueBuffer, ASType.AS_NUMBER_2OCTETS);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_ATOMIC_AGGREGATE:
                attr = this.decodeAtomicAggregatePathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_COMMUNITIES:
                attr = this.decodeCommunityPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_LOCAL_PREF:
                attr = this.decodeLocalPrefPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_MULTI_EXIT_DISC:
                attr = this.decodeMultiExitDiscPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_NEXT_HOP:
                attr = this.decodeNextHopPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_ORIGIN:
                attr = this.decodeOriginPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_MP_REACH_NLRI:
                attr = this.decodeMpReachNlriPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_MP_UNREACH_NLRI:
                attr = this.decodeMpUnreachNlriPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_ORIGINATOR_ID:
                attr = this.decodeOriginatorIDPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_CLUSTER_LIST:
                attr = this.decodeClusterListPathAttribute(valueBuffer);
                break;
            case BGPv4Constants.BGP_PATH_ATTRIBUTE_TYPE_EXTENDED_COMMUNITIES:
                attr = this.decodeExtendedCommunityPathAttribute(valueBuffer);
                break;
            default: {
                final byte[] value = new byte[valueBuffer.readableBytes()];

                valueBuffer.readBytes(value);
                attr = new UnknownPathAttribute(typeCode, value);
            }
                break;
            }
            attr.setOptional(optional);
            attr.setTransitive(transitive);
            attr.setPartial(partial);

            attributes.add(attr);

        } catch (final AttributeException ex) {

            final int endReadIndex = buffer.readerIndex();

            buffer.resetReaderIndex();

            final int attributeLength = endReadIndex - buffer.readerIndex();
            final byte[] packet = new byte[attributeLength];

            buffer.readBytes(packet);
            ex.setOffendingAttribute(packet);

            throw ex;

        } catch (final IndexOutOfBoundsException ex) {

            // this is almost certinally an internal error with parsing ....

            final int endReadIndex = buffer.readerIndex();

            buffer.resetReaderIndex();

            final int attributeLength = endReadIndex - buffer.readerIndex();
            final byte[] packet = new byte[attributeLength];

            buffer.readBytes(packet);

            throw new AttributeLengthException(ex, packet);

        }

    }

    return attributes;
}

---

From source file:io.netlibs.bgp.netty.protocol.open.CapabilityCodec.java

License:Apache License

private static Capability decodeOutboundRouteFilteringCapability(final ByteBuf buffer) {
    final OutboundRouteFilteringCapability cap = new OutboundRouteFilteringCapability();

    assertMinimalLength(buffer, 5); // 2 octest AFI + 1 octet reserved + 1 octet SAFI + 1 octet number of (ORF type, Send/Receive) tuples

    cap.setAddressFamily(AddressFamily.fromCode(buffer.readUnsignedShort()));
    buffer.readByte();/*from   www  .  j a v a  2s . c  o m*/
    cap.setSubsequentAddressFamily(SubsequentAddressFamily.fromCode(buffer.readUnsignedByte()));

    final int orfs = buffer.readUnsignedByte();

    if (buffer.readableBytes() != (2 * orfs)) {
        throw new UnspecificOpenPacketException(
                "Expected " + (2 * orfs) + " octets parameter, got " + buffer.readableBytes() + " octets");
    }

    try {
        cap.getFilters().put(ORFType.fromCode(buffer.readUnsignedByte()),
                ORFSendReceive.fromCode(buffer.readUnsignedByte()));
    } catch (final IllegalArgumentException e) {
        throw new UnspecificOpenPacketException(e);
    }
    return cap;
}

---

From source file:io.reactiverse.pgclient.impl.codec.decoder.MessageDecoder.java

License:Apache License

private void decodeDataRow(ByteBuf in) {
    QueryCommandBase<?> cmd = (QueryCommandBase<?>) inflight.peek();
    int len = in.readUnsignedShort();
    cmd.decoder.decodeRow(len, in);/*from   w w  w .jav  a2s . co m*/
}

---

From source file:io.reactiverse.pgclient.impl.codec.decoder.MessageDecoder.java

License:Apache License

private void decodeRowDescription(ByteBuf in) {
    ColumnDesc[] columns = new ColumnDesc[in.readUnsignedShort()];
    for (int c = 0; c < columns.length; ++c) {
        String fieldName = Util.readCStringUTF8(in);
        int tableOID = in.readInt();
        short columnAttributeNumber = in.readShort();
        int typeOID = in.readInt();
        short typeSize = in.readShort();
        int typeModifier = in.readInt();
        int textOrBinary = in.readUnsignedShort(); // Useless for now
        ColumnDesc column = new ColumnDesc(fieldName, tableOID, columnAttributeNumber,
                DataType.valueOf(typeOID), typeSize, typeModifier, DataFormat.valueOf(textOrBinary));
        columns[c] = column;/*from   w w w  .  j  a  va 2  s .c  o m*/
    }
    RowDescription rowDesc = new RowDescription(columns);
    inflight.peek().handleRowDescription(rowDesc);
}

---

From source file:io.reactiverse.pgclient.impl.codec.decoder.MessageDecoder.java

License:Apache License

private void decodeParameterDescription(ByteBuf in) {
    DataType[] paramDataTypes = new DataType[in.readUnsignedShort()];
    for (int c = 0; c < paramDataTypes.length; ++c) {
        paramDataTypes[c] = DataType.valueOf(in.readInt());
    }//ww  w  .j ava 2  s  .  co m
    inflight.peek().handleParameterDescription(new ParameterDescription(paramDataTypes));
}

---

From source file:me.bigteddy98.movingmotd.ClientSideConnection.java

License:Open Source License

@Override
public void channelRead(final ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf clonedBuf = Unpooled.copiedBuffer((ByteBuf) msg);
    ByteBuf originalBuf = (ByteBuf) msg;

    int packetSize = PacketUtils.readVarInt(originalBuf);
    if (originalBuf.readableBytes() < packetSize) {
        System.out.println("Packet was smaller than the lenght.");
    }/*  w  w w.j a  va 2s  .  co m*/
    int id = PacketUtils.readVarInt(originalBuf);
    if (this.stage == Stage.HANDSHAKE) {
        if (id != 0x00) {
            System.out.println("Handshake ID was not equal to 0x00.");
        }
        // followed by varint, string, unsigned short and another varint
        PacketUtils.readVarInt(originalBuf);
        PacketUtils.readString(originalBuf);
        originalBuf.readUnsignedShort();
        int nextStage = PacketUtils.readVarInt(originalBuf);
        this.stage = Stage.fromId(nextStage);
    } else if (this.stage == Stage.LOGIN) {
        // just sent it
    } else if (this.stage == Stage.STATUS) {
        // TODO someone is pinging!

        originalBuf.release();
        return;
    }
    originalBuf.release();
    this.outgoingChannel.writeAndFlush(clonedBuf).addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                ctx.channel().read();
            } else {
                future.channel().close();
            }
        }
    });
}

---

From source file:me.melchor9000.net.resolver.DNSMessage.java

License:Open Source License

private int rs(ByteBuf buf) {
    if (buf.readableBytes() < 2)
        throw new DataNotRepresentsObject("Is an incomplete DNS message or isn't it", buf);
    return buf.readUnsignedShort();
}

---

From source file:me.melchor9000.net.resolver.DNSMX.java

License:Open Source License

@Override
public void fromByteBuf(@NotNull ByteBuf buffer) throws DataNotRepresentsObject {
    if (buffer.readableBytes() < 2)
        throw new DataNotRepresentsObject("DNS RR type MX doesn't contain data", buffer);
    preference = buffer.readUnsignedShort();
    exchange = readName(buffer);//from  www .  j a  v a 2s.co  m
}

---

From source file:me.melchor9000.net.resolver.DNSQuery.java

License:Open Source License

@Override
public void fromByteBuf(@NotNull ByteBuf buffer) throws DataNotRepresentsObject {
    if (buffer.readableBytes() < 4)
        throw new DataNotRepresentsObject("DNS Query is invalid", buffer);
    name = readName(buffer);/*from w  ww.  j  av  a 2  s .c  o m*/
    type = buffer.readUnsignedShort();
    mclass = buffer.readUnsignedShort();
}

---

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