Example usage for io.netty.buffer ByteBuf writeCharSequence

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

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Introduction

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

Prototype

public abstract int writeCharSequence(CharSequence sequence, Charset charset);

Source Link

Document

Writes the specified CharSequence at the current writerIndex and increases the writerIndex by the written bytes.

Usage

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

License:Apache License

private Object processNtcbSingle(DeviceSession deviceSession, Channel channel, ByteBuf buf) {
    Position position = parseNtcbPosition(deviceSession, buf);

    ByteBuf response = Unpooled.buffer(7);
    response.writeCharSequence("*<T", StandardCharsets.US_ASCII);
    response.writeIntLE((int) position.getLong(Position.KEY_INDEX));
    sendNtcbReply(channel, response);/* w w  w .j  ava  2 s.com*/

    return position.getFixTime() != null ? position : null;
}

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

License:Apache License

private Object processNtcbArray(DeviceSession deviceSession, Channel channel, ByteBuf buf) {
    List<Position> positions = new LinkedList<>();
    int count = buf.readUnsignedByte();

    for (int i = 0; i < count; i++) {
        Position position = parseNtcbPosition(deviceSession, buf);
        if (position.getFixTime() != null) {
            positions.add(position);/* www.  ja va  2s . co m*/
        }
    }

    ByteBuf response = Unpooled.buffer(7);
    response.writeCharSequence("*<A", StandardCharsets.US_ASCII);
    response.writeByte(count);
    sendNtcbReply(channel, response);

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

    return positions;
}

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

License:Apache License

private Object processFlexSingle(FlexPositionParser parser, String flexHeader, DeviceSession deviceSession,
        Channel channel, ByteBuf buf) {

    if (!flexHeader.equals("~C")) {
        buf.readUnsignedInt(); // event index
    }/*from  ww  w.  ja va2  s.com*/

    Position position = parser.parsePosition(deviceSession, buf);

    ByteBuf response = Unpooled.buffer();
    response.writeCharSequence(flexHeader, StandardCharsets.US_ASCII);
    response.writeIntLE((int) position.getLong(Position.KEY_INDEX));
    sendFlexReply(channel, response);

    return position.getFixTime() != null ? position : null;
}

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

License:Apache License

private Object processFlexArray(FlexPositionParser parser, String flexHeader, DeviceSession deviceSession,
        Channel channel, ByteBuf buf) {

    List<Position> positions = new LinkedList<>();
    int count = buf.readUnsignedByte();

    for (int i = 0; i < count; i++) {
        Position position = parser.parsePosition(deviceSession, buf);
        if (position.getFixTime() != null) {
            positions.add(position);/*  w  w  w .j a v a2  s  .  co  m*/
        }
    }

    ByteBuf response = Unpooled.buffer();
    response.writeCharSequence(flexHeader, StandardCharsets.US_ASCII);
    response.writeByte(count);
    sendFlexReply(channel, response);

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

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

License:Apache License

private Object processFlexNegotiation(Channel channel, ByteBuf buf) {
    if ((byte) buf.readUnsignedByte() != (byte) 0xB0) {
        return null;
    }//  w ww  . j a v a 2  s . c  o  m

    short flexProtocolVersion = buf.readUnsignedByte();
    short flexStructVersion = buf.readUnsignedByte();
    if ((flexProtocolVersion == 0x0A || flexProtocolVersion == 0x14)
            && (flexStructVersion == 0x0A || flexStructVersion == 0x14)) {

        flexBitFieldSize = buf.readUnsignedByte();
        if (flexBitFieldSize > 122) {
            return null;
        }

        buf.readBytes(flexBitField, 0, (int) Math.ceil((double) flexBitFieldSize / 8));

        flexDataSize = 0;
        for (int i = 0; i < flexBitFieldSize; i++) {
            if (checkFlexBitfield(i)) {
                flexDataSize += FLEX_FIELDS_SIZES[i];
            }
        }
    } else {
        flexProtocolVersion = 0x14;
        flexStructVersion = 0x14;
    }

    ByteBuf response = Unpooled.buffer(9);
    response.writeCharSequence("*<FLEX", StandardCharsets.US_ASCII);
    response.writeByte(0xB0);
    response.writeByte(flexProtocolVersion);
    response.writeByte(flexStructVersion);
    sendNtcbReply(channel, response);

    return null;
}

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

License:Apache License

private void sendNtcbReply(Channel channel, ByteBuf data) {
    if (channel != null) {
        ByteBuf header = Unpooled.buffer(16);
        header.writeCharSequence(prefix, StandardCharsets.US_ASCII);
        header.writeIntLE((int) deviceUniqueId);
        header.writeIntLE((int) serverId);
        header.writeShortLE(data.readableBytes());
        header.writeByte(Checksum.xor(data.nioBuffer()));
        header.writeByte(Checksum.xor(header.nioBuffer()));

        channel.writeAndFlush(// w ww .  ja v  a2 s .  c o m
                new NetworkMessage(Unpooled.wrappedBuffer(header, data), channel.remoteAddress()));
    }
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;//w ww.j  a  v  a2 s. co  m

    buf.readUnsignedShortLE(); // length
    int type = buf.readUnsignedShortLE();

    if (type == MSG_SHAKE_HAND && channel != null) {

        ByteBuf response = Unpooled.buffer(13);
        response.writeCharSequence("\r\n*KW", StandardCharsets.US_ASCII);
        response.writeByte(0);
        response.writeShortLE(response.capacity());
        response.writeShortLE(MSG_SHAKE_HAND_RESPONSE);
        response.writeByte(1); // status
        response.writeCharSequence("\r\n", StandardCharsets.US_ASCII);

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

    } else if (type == MSG_UPLOAD_POSITION || type == MSG_UPLOAD_POSITION_NEW || type == MSG_CONTROL_RESPONSE
            || type == MSG_ALARM) {

        boolean newFormat = false;
        if (type == MSG_UPLOAD_POSITION && buf.readableBytes() == 48
                || type == MSG_ALARM && buf.readableBytes() == 48
                || type == MSG_CONTROL_RESPONSE && buf.readableBytes() == 57) {
            newFormat = true;
        }

        Position position = new Position(getProtocolName());

        if (type == MSG_CONTROL_RESPONSE) {
            buf.readUnsignedIntLE(); // GIS ip
            buf.readUnsignedIntLE(); // GIS port
        }

        position.setValid(BitUtil.check(buf.readUnsignedByte(), 0));

        short alarm = buf.readUnsignedByte();
        switch (alarm) {
        case 1:
            position.set(Position.KEY_ALARM, Position.ALARM_SOS);
            break;
        case 2:
            position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED);
            break;
        case 3:
            position.set(Position.KEY_ALARM, Position.ALARM_GEOFENCE_EXIT);
            break;
        case 9:
            position.set(Position.KEY_ALARM, Position.ALARM_POWER_OFF);
            break;
        default:
            break;
        }

        if (newFormat) {
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedIntLE()));
            position.setCourse(buf.readFloatLE());
        } else {
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
            position.setCourse(buf.readUnsignedShortLE());
        }
        position.setLongitude(buf.readFloatLE());
        position.setLatitude(buf.readFloatLE());

        if (!newFormat) {
            long timeValue = buf.readUnsignedIntLE();
            DateBuilder dateBuilder = new DateBuilder().setYear((int) BitUtil.from(timeValue, 26))
                    .setMonth((int) BitUtil.between(timeValue, 22, 26))
                    .setDay((int) BitUtil.between(timeValue, 17, 22))
                    .setHour((int) BitUtil.between(timeValue, 12, 17))
                    .setMinute((int) BitUtil.between(timeValue, 6, 12))
                    .setSecond((int) BitUtil.to(timeValue, 6));
            position.setTime(dateBuilder.getDate());
        }

        ByteBuf rawId;
        if (newFormat) {
            rawId = buf.readSlice(12);
        } else {
            rawId = buf.readSlice(11);
        }
        String id = rawId.toString(StandardCharsets.US_ASCII).replaceAll("[^\\p{Print}]", "");
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
        if (deviceSession == null) {
            return null;
        }
        position.setDeviceId(deviceSession.getDeviceId());

        if (newFormat) {
            DateFormat dateFormat = new SimpleDateFormat("yy-MM-dd HH:mm:ss");
            position.setTime(dateFormat.parse(buf.readSlice(17).toString(StandardCharsets.US_ASCII)));
            buf.readByte();
        }

        if (!newFormat) {
            position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());
            position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
        } else if (type == MSG_UPLOAD_POSITION_NEW) {
            position.set(Position.PREFIX_TEMP + 1, buf.readShortLE());
            position.set(Position.KEY_ODOMETER, buf.readFloatLE());
        }

        return position;
    }

    return null;
}

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

License:Apache License

private ByteBuf encodeContent(String content) {

    ByteBuf buf = Unpooled.buffer(12 + 56);

    buf.writeCharSequence("\r\n*KW", StandardCharsets.US_ASCII);
    buf.writeByte(0);//from ww  w .java  2  s .c om
    buf.writeShortLE(buf.capacity());
    buf.writeShortLE(NoranProtocolDecoder.MSG_CONTROL);
    buf.writeInt(0); // gis ip
    buf.writeShortLE(0); // gis port
    buf.writeBytes(content.getBytes(StandardCharsets.US_ASCII));
    buf.writerIndex(buf.writerIndex() + 50 - content.length());
    buf.writeCharSequence("\r\n", StandardCharsets.US_ASCII);

    return buf;
}

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

License:Apache License

private void sendResponse(Channel channel, SocketAddress remoteAddress, String type, String... arguments) {
    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeCharSequence(type, StandardCharsets.US_ASCII);
        for (String argument : arguments) {
            response.writeByte(argument.length());
            response.writeCharSequence(argument, StandardCharsets.US_ASCII);
        }/*from  w w  w . j a  v a 2  s .  c o m*/
        response.writeByte(0);
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }
}

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

License:Apache License

protected ByteBuf formatBinaryCommand(Channel channel, Command command, String textPrefix, ByteBuf data) {
    boolean hasIndex = false;
    String manufacturer = "CS";
    if (channel != null) {
        WatchProtocolDecoder decoder = channel.pipeline().get(WatchProtocolDecoder.class);
        if (decoder != null) {
            hasIndex = decoder.getHasIndex();
            manufacturer = decoder.getManufacturer();
        }//ww  w .j av  a  2s  .  co m
    }

    ByteBuf buf = Unpooled.buffer();
    buf.writeByte('[');
    buf.writeCharSequence(manufacturer, StandardCharsets.US_ASCII);
    buf.writeByte('*');
    buf.writeCharSequence(getUniqueId(command.getDeviceId()), StandardCharsets.US_ASCII);
    buf.writeByte('*');
    if (hasIndex) {
        buf.writeCharSequence("0001", StandardCharsets.US_ASCII);
        buf.writeByte('*');
    }
    buf.writeCharSequence(String.format("%04x", data.readableBytes() + textPrefix.length()),
            StandardCharsets.US_ASCII);
    buf.writeByte('*');
    buf.writeCharSequence(textPrefix, StandardCharsets.US_ASCII);
    buf.writeBytes(data);
    buf.writeByte(']');

    return buf;
}