Example usage for io.netty.buffer ByteBuf markReaderIndex

List of usage examples for io.netty.buffer ByteBuf markReaderIndex

  1. HOME
  2. Java
  3. io.netty
  4. io.netty.buffer.*
  5. ByteBuf
  6. markReaderIndex

Introduction

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

Prototype

public abstract ByteBuf markReaderIndex();

Source Link

Document

Marks the current readerIndex in this buffer.

Usage

From source file:com.jayqqaa12.jbase.tcp.netty.code.DreamJSONDecoder.java

License:Open Source License

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

        if (in.readableBytes() <= 4) {
            break;
        }//from   w  w  w .  ja va2s  . co m
        in.markReaderIndex();
        int length = in.readInt();
        if (length <= 0) {
            throw new Exception("a negative length occurd while decode!");
        }
        if (in.readableBytes() < length) {
            in.resetReaderIndex();
            break;
        }
        byte[] msg = new byte[length];
        in.readBytes(msg);
        out.add(new String(msg, "UTF-8"));
    }

}

From source file:com.kradac.karview.netty.MyDecoder.java

@Override
protected void decode(ChannelHandlerContext chc, ByteBuf bb, List<Object> list) throws Exception {
    if (bb.readableBytes() < 2) {
        return;/*  w ww .  j ava2s .  c o m*/
    }
    bb.markReaderIndex();
    int length = bb.readChar();
    if (length > 150) {
        String data = "";
        while (bb.isReadable()) {
            data += (char) bb.readByte();
        }
        bb.clear();
        if (data.contains("OK") || data.contains("handshake")) {
            if (data.contains("handshake")) {
                chc.channel().write("0%%at");
            }
            if (data.contains("OK")) {
                System.out.println("Respuesta de Comando AT [" + data + "]");
            }
        } else {
            System.err.println("Datos incorrectos enviados al Servidor [" + data + "]");
            chc.channel().disconnect();
        }
    }
    if (bb.readableBytes() < length - 2) {
        bb.resetReaderIndex();
        return;
    }
    in.writeBytes(bb);//Escribimos los bytes
    in.discardReadBytes();//
    in.retain();
    list.add(in);
    bb.clear();//vaciamos el byteBuf
}

From source file:com.linecorp.armeria.client.endpoint.dns.DnsServiceEndpointGroup.java

License:Apache License

@Override
ImmutableSortedSet<Endpoint> onDnsRecords(List<DnsRecord> records, int ttl) throws Exception {
    final ImmutableSortedSet.Builder<Endpoint> builder = ImmutableSortedSet.naturalOrder();
    for (DnsRecord r : records) {
        if (!(r instanceof DnsRawRecord) || r.type() != DnsRecordType.SRV) {
            continue;
        }/*  www .  j  a  va  2  s .com*/

        final ByteBuf content = ((ByteBufHolder) r).content();
        if (content.readableBytes() <= 6) { // Too few bytes
            warnInvalidRecord(DnsRecordType.SRV, content);
            continue;
        }

        content.markReaderIndex();
        content.skipBytes(2); // priority unused
        final int weight = content.readUnsignedShort();
        final int port = content.readUnsignedShort();

        final Endpoint endpoint;
        try {
            final String target = stripTrailingDot(DefaultDnsRecordDecoder.decodeName(content));
            endpoint = port > 0 ? Endpoint.of(target, port) : Endpoint.of(target);
        } catch (Exception e) {
            content.resetReaderIndex();
            warnInvalidRecord(DnsRecordType.SRV, content);
            continue;
        }

        builder.add(endpoint.withWeight(weight));
    }

    final ImmutableSortedSet<Endpoint> endpoints = builder.build();
    if (logger().isDebugEnabled()) {
        logger().debug("{} Resolved: {} (TTL: {})", logPrefix(),
                endpoints.stream().map(e -> e.authority() + '/' + e.weight()).collect(Collectors.joining(", ")),
                ttl);
    }

    return endpoints;
}

From source file:com.linecorp.armeria.client.endpoint.dns.DnsTextEndpointGroup.java

License:Apache License

@Override
ImmutableSortedSet<Endpoint> onDnsRecords(List<DnsRecord> records, int ttl) throws Exception {
    final ImmutableSortedSet.Builder<Endpoint> builder = ImmutableSortedSet.naturalOrder();
    for (DnsRecord r : records) {
        if (!(r instanceof DnsRawRecord) || r.type() != DnsRecordType.TXT) {
            continue;
        }//  ww  w .ja va2  s.  c  o  m

        final ByteBuf content = ((ByteBufHolder) r).content();
        if (!content.isReadable()) { // Missing length octet
            warnInvalidRecord(DnsRecordType.TXT, content);
            continue;
        }

        content.markReaderIndex();
        final int txtLen = content.readUnsignedByte();
        if (txtLen == 0) { // Empty content
            continue;
        }

        if (content.readableBytes() != txtLen) { // Mismatching number of octets
            content.resetReaderIndex();
            warnInvalidRecord(DnsRecordType.TXT, content);
            continue;
        }

        final byte[] txt = new byte[txtLen];
        content.readBytes(txt);

        final Endpoint endpoint;
        try {
            endpoint = mapping.apply(txt);
        } catch (Exception e) {
            content.resetReaderIndex();
            warnInvalidRecord(DnsRecordType.TXT, content);
            continue;
        }

        if (endpoint != null) {
            if (endpoint.isGroup()) {
                logger().warn("{} Ignoring group endpoint: {}", logPrefix(), endpoint);
            } else {
                builder.add(endpoint);
            }
        }
    }

    final ImmutableSortedSet<Endpoint> endpoints = builder.build();
    if (logger().isDebugEnabled()) {
        logger().debug("{} Resolved: {} (TTL: {})", logPrefix(),
                endpoints.stream().map(Object::toString).collect(Collectors.joining(", ")), ttl);
    }

    return endpoints;
}

From source file:com.mobius.software.android.iotbroker.mqtt.parser.MQParser.java

License:Open Source License

public static ByteBuf next(ByteBuf buf) throws MalformedMessageException {
    buf.markReaderIndex();
    MessageType type = MessageType.valueOf(((buf.readByte() >> 4) & 0xf));

    switch (type) {
    case PINGREQ:
    case PINGRESP:
    case DISCONNECT:
        buf.resetReaderIndex();//  w w w  .j a  v  a2 s  .  c  o m
        return Unpooled.buffer(2);
    default:
        LengthDetails length = decodeLength(buf);
        buf.resetReaderIndex();
        if (length.getLength() == 0)
            return null;
        int result = length.getLength() + length.getSize() + 1;
        return result <= buf.readableBytes() ? Unpooled.buffer(result) : null;
    }
}

From source file:com.mobius.software.mqtt.parser.MQParser.java

License:Open Source License

public static ByteBuf next(ByteBuf buf, int maxMessageSize) throws MalformedMessageException {
    buf.markReaderIndex();
    MessageType type = MessageType.valueOf(((buf.readByte() >> 4) & 0xf));

    if (type == null) {
        buf.resetReaderIndex();/*from w ww.  j av a2  s  . c om*/
        throw new MalformedMessageException("invalid message type decoding");
    }

    switch (type) {
    case PINGREQ:
    case PINGRESP:
    case DISCONNECT:
        buf.resetReaderIndex();
        return Unpooled.buffer(2);
    default:
        LengthDetails length = LengthDetails.decode(buf);
        buf.resetReaderIndex();
        if (length.getLength() == 0)
            return null;
        int result = length.getLength() + length.getSize() + 1;
        if (result > buf.readableBytes())
            throw new MalformedMessageException("invalid length decoding for " + type + " result length:"
                    + result + ", in buffer:" + buf.readableBytes());
        if (result > maxMessageSize)
            throw new MalformedMessageException("message length exceeds limit " + maxMessageSize);
        return Unpooled.buffer(result);
    }
}

From source file:com.mpush.netty.codec.PacketDecoder.java

License:Apache License

private void decodeFrames(ByteBuf in, List<Object> out) {
    if (in.readableBytes() >= Packet.HEADER_LEN) {
        //1.????.??frame,????,?
        in.markReaderIndex();

        Packet packet = decodeFrame(in);
        if (packet != null) {
            out.add(packet);//from  w  w  w  . j a va  2s.c  o  m
        } else {
            //2.??frame,????,?
            in.resetReaderIndex();
        }
    }
}

From source file:com.myseti.framework.monitor.net.DecodeProtocol.java

@Override
protected void decode(ChannelHandlerContext chc, ByteBuf bb, List<Object> list) throws Exception {

    if (bb.readableBytes() < Utility.PACKAGE_LENGTH) {
        return;/*from www  .j  ava  2  s. c  o  m*/
    } else {

        bb.markReaderIndex();
        ByteBufInputStream stream = new ByteBufInputStream(bb);
        try {
            byte[] len = new byte[4];
            stream.read(len, 0, 4);
            int length = com.myseti.framework.core.HexTools.byte2Int(len);
            System.out.print("" + length + "\n");
            byte[] result = new byte[length - 4];
            stream.read(result, 0, length - 4);
            ProtocolEntity entity = new ProtocolEntity(result);
            list.add(entity);
            System.out.print("DecodeProtocol active! add a new entity \n");
        } catch (Exception ex) {
            System.out.print(ex.toString());
        }
    }

}

From source file:com.navercorp.nbasearc.gcp.RedisDecoder.java

License:Apache License

void getFrames(ByteBuf in, List<byte[]> out) {
    while (true) {
        in.markReaderIndex();
        final int stx = in.readerIndex();

        if (hasFrame(in) == false) {
            in.resetReaderIndex();/*ww w . ja v  a2 s.co  m*/
            break;
        }

        int length = in.readerIndex() - stx;
        byte[] readBytes = new byte[length];

        in.resetReaderIndex();
        in.readBytes(readBytes);
        out.add(readBytes);
    }
}

From source file:com.newlandframework.avatarmq.netty.MessageObjectDecoder.java

License:Apache License

protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
    if (in.readableBytes() < MessageObjectDecoder.MESSAGE_LENGTH) {
        return;/*from w  w w . j av a 2 s .c  o  m*/
    }

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

    if (messageLength < 0) {
        ctx.close();
    }

    if (in.readableBytes() < messageLength) {
        in.resetReaderIndex();
        return;
    } else {
        byte[] messageBody = new byte[messageLength];
        in.readBytes(messageBody);

        try {
            Object obj = util.decode(messageBody);
            out.add(obj);
        } catch (IOException ex) {
            Logger.getLogger(MessageObjectDecoder.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}