Example usage for io.netty.buffer ByteBuf writeIntLE

Introduction

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

Prototype

public abstract ByteBuf writeIntLE(int value);

Source Link

Document

Sets the specified 32-bit integer at the current writerIndex in the Little Endian Byte Order and increases the writerIndex by 4 in this buffer.

Usage

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

License:Apache License

private void requestArchive(Channel channel) {
    if (lastIndex == 0) {
        lastIndex = newIndex;/*  w w w  .j av  a 2s.co m*/
    } else if (newIndex > lastIndex) {
        ByteBuf request = Unpooled.buffer(12);
        request.writeShortLE(MSG_LOG_SYNC);
        request.writeShortLE(4);
        request.writeIntLE((int) lastIndex);
        request.writeIntLE(0);
        channel.writeAndFlush(new NetworkMessage(request, channel.remoteAddress()));
    }
}

---

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

License:Apache License

private void sendResponse(Channel channel, int type) {
    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeByte(0xaa); // header
        response.writeShortLE(0x85da); // reserved
        response.writeShortLE(15); // length
        response.writeByte(1); // edition
        response.writeShortLE(MSG_RESPONSE);
        response.writeShortLE(type);/*from   w w w . ja va2  s  .  c om*/
        response.writeIntLE(0); // command id
        response.writeByte(0); // status
        response.writeByte(0); // result length
        response.writeIntLE(0x20000); // result data ?
        channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
    }
}

---

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;/*from   w  w  w.  ja va  2  s  .c o m*/

    buf.readUnsignedShortLE(); // checksum
    buf.readUnsignedShortLE(); // preamble
    long id = buf.readUnsignedIntLE();
    buf.readUnsignedShortLE(); // length

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(id));
    if (deviceSession == null) {
        return null;
    }

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

    while (buf.isReadable()) {

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

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

        position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
        position.setLatitude(buf.readUnsignedIntLE() * 0.000001);
        position.setLongitude(buf.readUnsignedIntLE() * 0.000001);
        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE() * 0.01));
        position.setAltitude(buf.readShortLE());
        position.setCourse(buf.readUnsignedShortLE());
        position.setValid(buf.readUnsignedByte() > 0);

        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
        position.set(Position.KEY_EVENT, buf.readUnsignedByte());

        if (BitUtil.check(buf.readUnsignedByte(), 0)) {
            position.set(Position.KEY_ARCHIVE, true);
        }

        positions.add(position);

        buf.skipBytes(length);

    }

    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeShortLE(0);
        response.writeShortLE(0x4CBF); // preamble
        response.writeIntLE((int) id);
        response.writeShortLE(0);
        response.setShortLE(0, Checksum.crc16(Checksum.CRC16_CCITT_FALSE,
                response.nioBuffer(2, response.readableBytes() - 2)));
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }

    return positions;
}

---

• «
• 1
• 2
• 3
• 4
• »