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.traccar.protocol.CastelProtocolDecoder.java

License:Apache License

private void sendResponse(Channel channel, SocketAddress remoteAddress, ByteBuf id, short type) {

    if (channel != null) {
        int length = 2 + 2 + id.readableBytes() + 2 + 4 + 8 + 2 + 2;

        ByteBuf response = Unpooled.buffer(length);
        response.writeByte('@');
        response.writeByte('@');
        response.writeShortLE(length);
        response.writeBytes(id);/*from ww w  .  j  a  va2 s  .  c  om*/
        response.writeShort(type);
        response.writeIntLE(0);
        for (int i = 0; i < 8; i++) {
            response.writeByte(0xff);
        }
        response.writeShortLE(
                Checksum.crc16(Checksum.CRC16_X25, response.nioBuffer(0, response.writerIndex())));
        response.writeByte(0x0D);
        response.writeByte(0x0A);
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }
}

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

License:Apache License

private Object decodeSc(Channel channel, SocketAddress remoteAddress, ByteBuf buf, int version, ByteBuf id,
        short type, DeviceSession deviceSession) {

    if (type == MSG_SC_HEARTBEAT) {

        sendResponse(channel, remoteAddress, version, id, MSG_SC_HEARTBEAT_RESPONSE, null);

    } else if (type == MSG_SC_LOGIN || type == MSG_SC_LOGOUT || type == MSG_SC_GPS || type == MSG_SC_ALARM
            || type == MSG_SC_CURRENT_LOCATION || type == MSG_SC_FUEL) {

        if (type == MSG_SC_LOGIN) {
            ByteBuf response = Unpooled.buffer(10);
            response.writeIntLE(0xFFFFFFFF);
            response.writeShortLE(0);
            response.writeIntLE((int) (System.currentTimeMillis() / 1000));
            sendResponse(channel, remoteAddress, version, id, MSG_SC_LOGIN_RESPONSE, response);
        }/*from w  w w .  ja  v a  2  s .co  m*/

        if (type == MSG_SC_GPS) {
            buf.readUnsignedByte(); // historical
        } else if (type == MSG_SC_ALARM) {
            buf.readUnsignedIntLE(); // alarm
        } else if (type == MSG_SC_CURRENT_LOCATION) {
            buf.readUnsignedShortLE();
        }

        buf.readUnsignedIntLE(); // ACC ON time
        buf.readUnsignedIntLE(); // UTC time
        long odometer = buf.readUnsignedIntLE();
        long tripOdometer = buf.readUnsignedIntLE();
        long fuelConsumption = buf.readUnsignedIntLE();
        buf.readUnsignedShortLE(); // current fuel consumption
        long status = buf.readUnsignedIntLE();
        buf.skipBytes(8);

        int count = buf.readUnsignedByte();

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

        for (int i = 0; i < count; i++) {
            Position position = readPosition(deviceSession, buf);
            position.set(Position.KEY_ODOMETER, odometer);
            position.set(Position.KEY_ODOMETER_TRIP, tripOdometer);
            position.set(Position.KEY_FUEL_CONSUMPTION, fuelConsumption);
            position.set(Position.KEY_STATUS, status);
            positions.add(position);
        }

        if (type == MSG_SC_ALARM) {
            int alarmCount = buf.readUnsignedByte();
            for (int i = 0; i < alarmCount; i++) {
                if (buf.readUnsignedByte() != 0) {
                    int alarm = buf.readUnsignedByte();
                    for (Position position : positions) {
                        decodeAlarm(position, alarm);
                    }
                    buf.readUnsignedShortLE(); // description
                    buf.readUnsignedShortLE(); // threshold
                }
            }
        } else if (type == MSG_SC_FUEL) {
            for (Position position : positions) {
                position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE());
            }
        }

        if (!positions.isEmpty()) {
            return positions;
        }

    } else if (type == MSG_SC_GPS_SLEEP) {

        buf.readUnsignedIntLE(); // device time

        return readPosition(deviceSession, buf);

    } else if (type == MSG_SC_AGPS_REQUEST) {

        return readPosition(deviceSession, buf);

    } else if (type == MSG_SC_PID_DATA) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        buf.readUnsignedShortLE(); // sample rate
        decodeObd(position, buf, true);

        return position;

    } else if (type == MSG_SC_DTCS_PASSENGER) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        buf.readUnsignedByte(); // flag
        position.add(ObdDecoder.decodeCodes(ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte()))));

        return position;

    } else if (type == MSG_SC_OBD_DATA) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        buf.readUnsignedByte(); // flag
        decodeObd(position, buf, false);

        return position;

    } else if (type == MSG_SC_CELL) {

        Position position = createPosition(deviceSession);

        decodeStat(position, buf);

        position.setNetwork(
                new Network(CellTower.fromLacCid(buf.readUnsignedShortLE(), buf.readUnsignedShortLE())));

        return position;

    } else if (type == MSG_SC_QUERY_RESPONSE) {

        Position position = createPosition(deviceSession);

        buf.readUnsignedShortLE(); // index
        buf.readUnsignedByte(); // response count
        buf.readUnsignedByte(); // response index

        int failureCount = buf.readUnsignedByte();
        for (int i = 0; i < failureCount; i++) {
            buf.readUnsignedShortLE(); // tag
        }

        int successCount = buf.readUnsignedByte();
        for (int i = 0; i < successCount; i++) {
            buf.readUnsignedShortLE(); // tag
            position.set(Position.KEY_RESULT,
                    buf.readSlice(buf.readUnsignedShortLE()).toString(StandardCharsets.US_ASCII));
        }

        return position;

    }

    return null;
}

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

License:Apache License

private ByteBuf encodeContent(long deviceId, short type, ByteBuf content) {

    ByteBuf buf = Unpooled.buffer(0);
    String uniqueId = Context.getIdentityManager().getById(deviceId).getUniqueId();

    buf.writeByte('@');
    buf.writeByte('@');

    buf.writeShortLE(2 + 2 + 1 + 20 + 2 + content.readableBytes() + 2 + 2); // length

    buf.writeByte(1); // protocol version

    buf.writeBytes(uniqueId.getBytes(StandardCharsets.US_ASCII));
    buf.writeZero(20 - uniqueId.length());

    buf.writeShort(type);//from ww w.ja  v a2  s . c  o  m
    buf.writeBytes(content);

    buf.writeShortLE(Checksum.crc16(Checksum.CRC16_X25, buf.nioBuffer()));

    buf.writeByte('\r');
    buf.writeByte('\n');

    return buf;
}

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

License:Apache License

private void sendResponse(Channel channel, int type, ByteBuf content) {
    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeByte(0x02);//from   w w  w  .  java2  s  .  com
        response.writeByte(0x55); // header
        response.writeByte(type);
        response.writeShortLE(content != null ? content.readableBytes() : 0);
        if (content != null) {
            response.writeBytes(content);
            content.release();
        }
        channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
    }
}

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

License:Apache License

private void sendResponse(Channel channel, int packetType, int index, int serviceType, int type,
        ByteBuf content) {/*  ww  w  .ja  v  a 2  s . co m*/
    if (channel != null) {

        ByteBuf data = Unpooled.buffer();
        data.writeByte(type);
        data.writeShortLE(content.readableBytes());
        data.writeBytes(content);
        content.release();

        ByteBuf record = Unpooled.buffer();
        if (packetType == PT_RESPONSE) {
            record.writeShortLE(index);
            record.writeByte(0); // success
        }
        record.writeShortLE(data.readableBytes());
        record.writeShortLE(0);
        record.writeByte(0); // flags (possibly 1 << 6)
        record.writeByte(serviceType);
        record.writeByte(serviceType);
        record.writeBytes(data);
        data.release();
        int recordChecksum = Checksum.crc16(Checksum.CRC16_CCITT_FALSE, record.nioBuffer());

        ByteBuf response = Unpooled.buffer();
        response.writeByte(1); // protocol version
        response.writeByte(0); // security key id
        response.writeByte(0); // flags
        response.writeByte(5 + 2 + 2 + 2); // header length
        response.writeByte(0); // encoding
        response.writeShortLE(record.readableBytes());
        response.writeShortLE(packetId++);
        response.writeByte(packetType);
        response.writeByte(Checksum.crc8(Checksum.CRC8_EGTS, response.nioBuffer()));
        response.writeBytes(record);
        record.release();
        response.writeShortLE(recordChecksum);

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

    }
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;//from ww  w  . j a  va  2s.  c o  m

    int index = buf.getUnsignedShort(buf.readerIndex() + 5 + 2);
    buf.skipBytes(buf.getUnsignedByte(buf.readerIndex() + 3));

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

    while (buf.readableBytes() > 2) {

        int length = buf.readUnsignedShortLE();
        int recordIndex = buf.readUnsignedShortLE();
        int recordFlags = buf.readUnsignedByte();

        if (BitUtil.check(recordFlags, 0)) {
            buf.readUnsignedIntLE(); // object id
        }

        if (BitUtil.check(recordFlags, 1)) {
            buf.readUnsignedIntLE(); // event id
        }
        if (BitUtil.check(recordFlags, 2)) {
            buf.readUnsignedIntLE(); // time
        }

        int serviceType = buf.readUnsignedByte();
        buf.readUnsignedByte(); // recipient service type

        int recordEnd = buf.readerIndex() + length;

        Position position = new Position(getProtocolName());
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession != null) {
            position.setDeviceId(deviceSession.getDeviceId());
        }

        ByteBuf response = Unpooled.buffer();
        response.writeShortLE(recordIndex);
        response.writeByte(0); // success
        sendResponse(channel, PT_RESPONSE, index, serviceType, MSG_RECORD_RESPONSE, response);

        while (buf.readerIndex() < recordEnd) {
            int type = buf.readUnsignedByte();
            int end = buf.readUnsignedShortLE() + buf.readerIndex();

            if (type == MSG_TERM_IDENTITY) {

                buf.readUnsignedIntLE(); // object id
                int flags = buf.readUnsignedByte();

                if (BitUtil.check(flags, 0)) {
                    buf.readUnsignedShortLE(); // home dispatcher identifier
                }
                if (BitUtil.check(flags, 1)) {
                    getDeviceSession(channel, remoteAddress,
                            buf.readSlice(15).toString(StandardCharsets.US_ASCII).trim());
                }
                if (BitUtil.check(flags, 2)) {
                    getDeviceSession(channel, remoteAddress,
                            buf.readSlice(16).toString(StandardCharsets.US_ASCII).trim());
                }
                if (BitUtil.check(flags, 3)) {
                    buf.skipBytes(3); // language identifier
                }
                if (BitUtil.check(flags, 5)) {
                    buf.skipBytes(3); // network identifier
                }
                if (BitUtil.check(flags, 6)) {
                    buf.readUnsignedShortLE(); // buffer size
                }
                if (BitUtil.check(flags, 7)) {
                    getDeviceSession(channel, remoteAddress,
                            buf.readSlice(15).toString(StandardCharsets.US_ASCII).trim());
                }

                response = Unpooled.buffer();
                response.writeByte(0); // success
                sendResponse(channel, PT_APPDATA, 0, serviceType, MSG_RESULT_CODE, response);

            } else if (type == MSG_POS_DATA) {

                position.setTime(new Date((buf.readUnsignedIntLE() + 1262304000) * 1000)); // since 2010-01-01
                position.setLatitude(buf.readUnsignedIntLE() * 90.0 / 0xFFFFFFFFL);
                position.setLongitude(buf.readUnsignedIntLE() * 180.0 / 0xFFFFFFFFL);

                int flags = buf.readUnsignedByte();
                position.setValid(BitUtil.check(flags, 0));
                if (BitUtil.check(flags, 5)) {
                    position.setLatitude(-position.getLatitude());
                }
                if (BitUtil.check(flags, 6)) {
                    position.setLongitude(-position.getLongitude());
                }

                int speed = buf.readUnsignedShortLE();
                position.setSpeed(UnitsConverter.knotsFromKph(BitUtil.to(speed, 14) * 0.1));
                position.setCourse(buf.readUnsignedByte() + (BitUtil.check(speed, 15) ? 0x100 : 0));

                position.set(Position.KEY_ODOMETER, buf.readUnsignedMediumLE() * 100);
                position.set(Position.KEY_INPUT, buf.readUnsignedByte());
                position.set(Position.KEY_EVENT, buf.readUnsignedByte());

                if (BitUtil.check(flags, 7)) {
                    position.setAltitude(buf.readMediumLE());
                }

            } else if (type == MSG_EXT_POS_DATA) {

                int flags = buf.readUnsignedByte();

                if (BitUtil.check(flags, 0)) {
                    position.set(Position.KEY_VDOP, buf.readUnsignedShortLE());
                }
                if (BitUtil.check(flags, 1)) {
                    position.set(Position.KEY_HDOP, buf.readUnsignedShortLE());
                }
                if (BitUtil.check(flags, 2)) {
                    position.set(Position.KEY_PDOP, buf.readUnsignedShortLE());
                }
                if (BitUtil.check(flags, 3)) {
                    position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
                }

            } else if (type == MSG_AD_SENSORS_DATA) {

                buf.readUnsignedByte(); // inputs flags

                position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());

                buf.readUnsignedByte(); // adc flags

            }

            buf.readerIndex(end);
        }

        if (serviceType == SERVICE_TELEDATA && deviceSession != null) {
            positions.add(position);
        }
    }

    return positions.isEmpty() ? null : positions;
}

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

License:Apache License

private void sendReply(Channel channel, int header, int checksum) {
    if (channel != null) {
        ByteBuf reply = Unpooled.buffer(3);
        reply.writeByte(header);//from   w w  w  . j  av a 2 s  .  c o m
        reply.writeShortLE((short) checksum);
        channel.writeAndFlush(new NetworkMessage(reply, channel.remoteAddress()));
    }
}

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

License:Apache License

private ByteBuf encodeText(String uniqueId, String text) {

    ByteBuf buf = Unpooled.buffer(256);

    buf.writeByte(0x01);/*from  w  ww .j  av a2  s. c  om*/
    buf.writeShortLE(uniqueId.length() + text.length() + 11);

    buf.writeByte(0x03); // imei tag
    buf.writeBytes(uniqueId.getBytes(StandardCharsets.US_ASCII));

    buf.writeByte(0x04); // device id tag
    buf.writeShortLE(0); // not needed if imei provided

    buf.writeByte(0xE0); // index tag
    buf.writeIntLE(0); // index

    buf.writeByte(0xE1); // command text tag
    buf.writeByte(text.length());
    buf.writeBytes(text.getBytes(StandardCharsets.US_ASCII));

    buf.writeShortLE(Checksum.crc16(Checksum.CRC16_MODBUS, buf.nioBuffer(0, buf.writerIndex())));

    return buf;
}

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

License:Apache License

private static void sendResponseCurrent(Channel channel, int deviceId, long time) {
    ByteBuf response = Unpooled.buffer();
    response.writeBytes("BB+UGRC~".getBytes(StandardCharsets.US_ASCII));
    response.writeShortLE(6); // length
    response.writeInt((int) time);
    response.writeShortLE(deviceId);/* w  w  w  .ja  v  a 2 s.c o m*/
    appendChecksum(response, 16);
    channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
}

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

License:Apache License

private static void sendResponseArchive(Channel channel, int deviceId, int packNum) {
    ByteBuf response = Unpooled.buffer();
    response.writeBytes("BB+ARCF~".getBytes(StandardCharsets.US_ASCII));
    response.writeShortLE(4); // length
    response.writeShortLE(packNum);/*from   www.  j a  v a  2 s .  c  o  m*/
    response.writeShortLE(deviceId);
    appendChecksum(response, 14);
    channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
}