Example usage for io.netty.buffer ByteBuf writeShortLE

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

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Introduction

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

Prototype

public abstract ByteBuf writeShortLE(int value);

Source Link

Document

Sets the specified 16-bit short integer in the Little Endian Byte Order at the current writerIndex and increases the writerIndex by 2 in this buffer.

Usage

From source file:org.lanternpowered.server.network.query.QueryHandler.java

License:MIT License

private void handleBasicStats(ChannelHandlerContext ctx, DatagramPacket packet, int sessionId) {
    LanternServer server = this.queryServer.getGame().getServer();

    // TODO: Find out how to support the size and max size properties
    final QueryServerEvent.Basic event = SpongeEventFactory.createQueryServerEventBasic(
            Cause.source(ctx.channel().remoteAddress()).build(),
            (InetSocketAddress) ctx.channel().localAddress(), "SMP", this.getWorldName(),
            server.getMotd().toPlain(), server.getMaxPlayers(), Integer.MAX_VALUE,
            server.getOnlinePlayers().size(), 0);
    Sponge.getEventManager().post(event);

    final InetSocketAddress address = event.getAddress();

    ByteBuf buf = ctx.alloc().buffer();
    buf.writeByte(ACTION_STATS);/*from   w  w  w.  j av a  2s . c o  m*/
    buf.writeInt(sessionId);
    writeString(buf, event.getMotd());
    writeString(buf, event.getGameType());
    writeString(buf, event.getMap());
    writeString(buf, String.valueOf(event.getPlayerCount()));
    writeString(buf, String.valueOf(event.getMaxPlayerCount()));
    buf.writeShortLE(address.getPort());
    writeString(buf, address.getHostString());
    ctx.write(new DatagramPacket(buf, packet.sender()));
}

From source file:org.traccar.protocol.AnytrekProtocolDecoder.java

License:Apache License

private void sendResponse(Channel channel, SocketAddress remoteAddress, int type) {
    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeShort(0x7878);//from w w w  . j  av  a  2s .  c om
        response.writeShortLE(1 + 1 + 2 + 1 + 2); // length
        response.writeByte(type);
        response.writeByte(0); // error
        response.writeShortLE(0); // report interval
        response.writeByte(0); // clear alarm
        response.writeShortLE(0); // checksum
        response.writeByte('\r');
        response.writeByte('\n');
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }
}

From source file:org.traccar.protocol.ApelProtocolDecoder.java

License:Apache License

private void sendSimpleMessage(Channel channel, short type) {
    ByteBuf request = Unpooled.buffer(8);
    request.writeShortLE(type);
    request.writeShortLE(0);/*from  w w  w.  ja v  a2  s .c  om*/
    request.writeIntLE(Checksum.crc32(request.nioBuffer(0, 4)));
    channel.writeAndFlush(new NetworkMessage(request, channel.remoteAddress()));
}

From source file:org.traccar.protocol.ApelProtocolDecoder.java

License:Apache License

private void requestArchive(Channel channel) {
    if (lastIndex == 0) {
        lastIndex = newIndex;//from  w w w .j  ava  2  s  . co m
    } else if (newIndex > lastIndex) {
        ByteBuf request = Unpooled.buffer(14);
        request.writeShortLE(MSG_REQUEST_LOG_RECORDS);
        request.writeShortLE(6);
        request.writeIntLE((int) lastIndex);
        request.writeShortLE(512);
        request.writeIntLE(Checksum.crc32(request.nioBuffer(0, 10)));
        channel.writeAndFlush(new NetworkMessage(request, channel.remoteAddress()));
    }
}

From source file:org.traccar.protocol.AutoTrackProtocolDecoder.java

License:Apache License

private Position decodeTelemetry(Channel channel, SocketAddress remoteAddress, DeviceSession deviceSession,
        ByteBuf buf) {/*from ww w.  j  a va2  s  .c  o  m*/

    Position position = new Position(getProtocolName());
    position.setDeviceId(deviceSession.getDeviceId());

    position.setTime(new Date(1009843200000L + buf.readUnsignedIntLE() * 1000)); // seconds since 2002
    position.setLatitude(buf.readIntLE() * 0.0000001);
    position.setLongitude(buf.readIntLE() * 0.0000001);

    position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
    position.set(Position.KEY_FUEL_USED, buf.readUnsignedIntLE());

    position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
    buf.readUnsignedShortLE(); // max speed

    position.set(Position.KEY_INPUT, buf.readUnsignedShortLE());
    buf.readUnsignedIntLE(); // di 3 count
    buf.readUnsignedIntLE(); // di 4 count

    for (int i = 0; i < 5; i++) {
        position.set(Position.PREFIX_ADC + (i + 1), buf.readUnsignedShortLE());
    }

    position.setCourse(buf.readUnsignedShortLE());

    position.set(Position.KEY_STATUS, buf.readUnsignedShortLE());
    position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());
    position.set(Position.KEY_DRIVER_UNIQUE_ID, buf.readLongLE());

    int index = buf.readUnsignedShortLE();

    buf.readUnsignedShortLE(); // checksum

    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeInt(0xF1F1F1F1); // sync
        response.writeByte(MSG_TELEMETRY_CONFIRM);
        response.writeShortLE(2); // length
        response.writeShortLE(index);
        response.writeShort(Checksum.crc16(Checksum.CRC16_XMODEM, response.nioBuffer()));
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }

    return position;
}

From source file:org.traccar.protocol.AutoTrackProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;/*from  ww w  . j  av a2  s .c o  m*/

    buf.skipBytes(4); // sync
    int type = buf.readUnsignedByte();
    buf.readUnsignedShortLE(); // length

    switch (type) {
    case MSG_LOGIN_REQUEST:
        String imei = ByteBufUtil.hexDump(buf.readBytes(8));
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
        if (deviceSession == null) {
            return null;
        }
        int fuelConst = buf.readUnsignedShortLE();
        int tripConst = buf.readUnsignedShortLE();
        if (channel != null) {
            ByteBuf response = Unpooled.buffer();
            response.writeInt(0xF1F1F1F1); // sync
            response.writeByte(MSG_LOGIN_CONFIRM);
            response.writeShortLE(12); // length
            response.writeBytes(ByteBufUtil.decodeHexDump(imei));
            response.writeShortLE(fuelConst);
            response.writeShortLE(tripConst);
            response.writeShort(Checksum.crc16(Checksum.CRC16_XMODEM, response.nioBuffer()));
            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
        }
        return null;
    case MSG_TELEMETRY_1:
    case MSG_TELEMETRY_2:
    case MSG_TELEMETRY_3:
        deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession == null) {
            return null;
        }
        return decodeTelemetry(channel, remoteAddress, deviceSession, buf);
    default:
        return null;
    }
}

From source file:org.traccar.protocol.BceProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;/*from  w  w  w.j ava  2s. com*/

    String imei = String.format("%015d", buf.readLongLE());
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
    if (deviceSession == null) {
        return null;
    }

    List<Position> positions = new LinkedList<>();

    while (buf.readableBytes() > 1) {

        int dataEnd = buf.readUnsignedShortLE() + buf.readerIndex();
        int type = buf.readUnsignedByte();

        if (type != MSG_ASYNC_STACK && type != MSG_TIME_TRIGGERED) {
            return null;
        }

        int confirmKey = buf.readUnsignedByte() & 0x7F;

        while (buf.readerIndex() < dataEnd) {

            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            int structEnd = buf.readUnsignedByte() + buf.readerIndex();

            long time = buf.readUnsignedIntLE();
            if ((time & 0x0f) == DATA_TYPE) {

                time = time >> 4 << 1;
                time += 0x47798280; // 01/01/2008
                position.setTime(new Date(time * 1000));

                // Read masks
                int mask;
                List<Integer> masks = new LinkedList<>();
                do {
                    mask = buf.readUnsignedShortLE();
                    masks.add(mask);
                } while (BitUtil.check(mask, 15));

                mask = masks.get(0);

                if (BitUtil.check(mask, 0)) {
                    position.setValid(true);
                    position.setLongitude(buf.readFloatLE());
                    position.setLatitude(buf.readFloatLE());
                    position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));

                    int status = buf.readUnsignedByte();
                    position.set(Position.KEY_SATELLITES, BitUtil.to(status, 4));
                    position.set(Position.KEY_HDOP, BitUtil.from(status, 4));

                    position.setCourse(buf.readUnsignedByte() * 2);
                    position.setAltitude(buf.readUnsignedShortLE());

                    position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
                }

                if (BitUtil.check(mask, 1)) {
                    position.set(Position.KEY_INPUT, buf.readUnsignedShortLE());
                }

                for (int i = 1; i <= 8; i++) {
                    if (BitUtil.check(mask, i + 1)) {
                        position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE());
                    }
                }

                if (BitUtil.check(mask, 10)) {
                    buf.skipBytes(4);
                }
                if (BitUtil.check(mask, 11)) {
                    buf.skipBytes(4);
                }
                if (BitUtil.check(mask, 12)) {
                    buf.skipBytes(2);
                }
                if (BitUtil.check(mask, 13)) {
                    buf.skipBytes(2);
                }

                if (BitUtil.check(mask, 14)) {
                    position.setNetwork(new Network(CellTower.from(buf.readUnsignedShortLE(),
                            buf.readUnsignedByte(), buf.readUnsignedShortLE(), buf.readUnsignedShortLE(),
                            buf.readUnsignedByte())));
                    buf.readUnsignedByte();
                }

                if (BitUtil.check(mask, 0)) {
                    positions.add(position);
                }
            }

            buf.readerIndex(structEnd);
        }

        // Send response
        if (type == MSG_ASYNC_STACK && channel != null) {
            ByteBuf response = Unpooled.buffer(8 + 2 + 2 + 1);
            response.writeLongLE(Long.parseLong(imei));
            response.writeShortLE(2);
            response.writeByte(MSG_STACK_COFIRM);
            response.writeByte(confirmKey);

            int checksum = 0;
            for (int i = 0; i < response.writerIndex(); i++) {
                checksum += response.getUnsignedByte(i);
            }
            response.writeByte(checksum);

            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
        }
    }

    return positions;
}

From source file:org.traccar.protocol.BceProtocolEncoder.java

License:Apache License

@Override
protected Object encodeCommand(Command command) {

    if (command.getType().equals(Command.TYPE_OUTPUT_CONTROL)) {
        ByteBuf buf = Unpooled.buffer();

        buf.writeLongLE(Long.parseLong(getUniqueId(command.getDeviceId())));
        buf.writeShortLE(1 + 1 + 3 + 1); // length
        buf.writeByte(BceProtocolDecoder.MSG_OUTPUT_CONTROL);
        buf.writeByte(command.getInteger(Command.KEY_INDEX) == 1 ? 0x0A : 0x0B);
        buf.writeByte(0xFF); // index
        buf.writeByte(0x00); // form id
        buf.writeShortLE(Integer.parseInt(command.getString(Command.KEY_DATA)) > 0 ? 0x0055 : 0x0000);
        buf.writeByte(Checksum.sum(buf.nioBuffer()));

        return buf;
    } else {/*from  w  w  w  .  j a v a 2  s .  co m*/
        return null;
    }
}

From source file:org.traccar.protocol.BlackKiteProtocolDecoder.java

License:Apache License

private void sendReply(Channel channel, int checksum) {
    if (channel != null) {
        ByteBuf reply = Unpooled.buffer(3);
        reply.writeByte(0x02);//from  ww  w  . ja v a  2 s .  co  m
        reply.writeShortLE((short) checksum);
        channel.writeAndFlush(new NetworkMessage(reply, channel.remoteAddress()));
    }
}

From source file:org.traccar.protocol.CastelProtocolDecoder.java

License:Apache License

private void sendResponse(Channel channel, SocketAddress remoteAddress, int version, ByteBuf id, short type,
        ByteBuf content) {//from   w w  w .j  av  a 2  s.  c om

    if (channel != null) {
        int length = 2 + 2 + 1 + id.readableBytes() + 2 + 2 + 2;
        if (content != null) {
            length += content.readableBytes();
        }

        ByteBuf response = Unpooled.buffer(length);
        response.writeByte('@');
        response.writeByte('@');
        response.writeShortLE(length);
        response.writeByte(version);
        response.writeBytes(id);
        response.writeShort(type);
        if (content != null) {
            response.writeBytes(content);
            content.release();
        }
        response.writeShortLE(
                Checksum.crc16(Checksum.CRC16_X25, response.nioBuffer(0, response.writerIndex())));
        response.writeByte(0x0D);
        response.writeByte(0x0A);
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }
}