Example usage for io.netty.buffer ByteBuf readUnsignedShort

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

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Introduction

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

Prototype

public abstract int readUnsignedShort();

Source Link

Document

Gets an unsigned 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.

Usage

From source file:com.uber.tchannel.codecs.CodecUtils.java

License:Open Source License

public static ByteBuf readArg(ByteBuf buffer) {
    if (buffer.readableBytes() < TFrame.FRAME_SIZE_LENGTH) {
        return null;
    }/*  w  ww  . jav a 2 s .  c  o  m*/

    int len = buffer.readUnsignedShort();
    if (len > buffer.readableBytes()) {
        throw new UnsupportedOperationException("wrong read index for args");
    } else if (len == 0) {
        return Unpooled.EMPTY_BUFFER;
    }

    /* Read a slice, retain a copy */
    ByteBuf arg = buffer.readSlice(len);
    arg.retain();

    return arg;
}

From source file:com.uber.tchannel.codecs.TFrameCodec.java

License:Open Source License

public static TFrame decode(ByteBuf buffer) {
    // size:2/* w w w .  j  av  a  2 s. c o  m*/
    int size = buffer.readUnsignedShort() - TFrame.FRAME_HEADER_LENGTH;

    // type:1
    byte type = buffer.readByte();

    // reserved:1
    buffer.skipBytes(1);

    // id:4
    long id = buffer.readUnsignedInt();

    // reserved:8
    buffer.skipBytes(8);

    // payload:16+
    ByteBuf payload = buffer.readSlice(size);
    //        payload.retain();

    return new TFrame(size, type, id, payload);
}

From source file:com.vethrfolnir.encdec.ReadDataFiles.java

License:Open Source License

public static long[] readFile(URL url) {

    ByteBuf buff = Unpooled.buffer().order(ByteOrder.LITTLE_ENDIAN);

    try (DataInputStream is = new DataInputStream(url.openStream())) {
        buff.writeBytes(is, is.available());
    } catch (Exception e) {
        throw new RuntimeException(e);
    }//from   w w  w.j a  v a2  s  . c o  m

    int bits2 = buff.readUnsignedShort();

    System.out.println("First two bits: " + bits2 + " hex: 0x" + PrintData.fillHex(bits2, 2));

    long[] out_dat = new long[12];

    buff.readerIndex(6);
    int pointer = 0;
    for (int i = 0; i < 3; i++) {
        long[] buf = new long[4];

        for (int j = 0; j < 4; j++) {
            buf[j] = buff.readUnsignedInt();
        }

        out_dat[pointer++] = buf[0] ^ (xor_tab_datfile[0]);
        out_dat[pointer++] = buf[1] ^ (xor_tab_datfile[1] & 0xFFFFFFFFL);
        out_dat[pointer++] = buf[2] ^ (xor_tab_datfile[2] & 0xFFFFFFFFL);
        out_dat[pointer++] = buf[3] ^ (xor_tab_datfile[3]);
    }

    for (int i = 0; i < out_dat.length; i++) {
        System.out.print(" " + (out_dat[i]));
    }

    System.out.println();
    return null;
}

From source file:com.vethrfolnir.game.network.mu.MuChannelHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf buff = (msg instanceof ByteBuffer) ? ctx.alloc().buffer().writeBytes((ByteBuffer) msg)
            : (ByteBuf) msg;//from w  w w  .  ja va  2  s .c  o  m

    buff.readerIndex(2);

    int opcode = buff.readUnsignedByte();
    switch (opcode) { // double opcode
    case 0xf1:
    case 0xf3:
    case 0x0e:
    case 0x03:
        buff.readerIndex(buff.readerIndex() - 1);
        opcode = buff.readUnsignedShort(); // ex 0xF1_03
        break;
    default:
        break;
    }

    if (opcode == 0xe00) { // Time packet?
        buff.clear();
        buff.release();
        return;
    }

    ReadPacket packet = clientpackets.get(opcode);

    if (packet != null) {
        MuClient client = ctx.channel().attr(MuClient.ClientKey).get();
        //System.out.println("Got opcode: 0x"+PrintData.fillHex(opcode, 2)+ " packet = \n"+packet.getClass().getSimpleName());
        packet.read(client, buff);
    } else {
        log.warn("Unknown packet[opcode = 0x" + PrintData.fillHex(opcode, 2) + "]. Dump: ");
        log.warn(PrintData.printData(buff.nioBuffer(0, buff.writerIndex())));
    }

    //log.warn(PrintData.printData(buff.nioBuffer(0, buff.writerIndex())));

    if (buff.refCnt() > 0) {
        //System.out.println("Handler Release when packet[opcode = 0x"+PrintData.fillHex(opcode, 2)+"]");
        buff.release();
    }
}

From source file:com.vethrfolnir.login.network.mu.ClientChannelHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf buff = (ByteBuf) msg;

    switch (buff.getUnsignedByte(0)) {
    case 0xC1:/*from w w w .  jav  a2  s  .  c  o  m*/
    case 0xC2:
    case 0xC3:
    case 0xC4:
        break;
    default:
        ctx.close();
        buff.release(); //TODO: maybe add a flood protector?
        log.warn("Client[" + ctx.channel() + "] is not a mu online client! Disconnecting!");
        return;
    }

    // we are not interested in the header and size;
    buff.readerIndex(2);

    int opcode = buff.readUnsignedShort();

    switch (opcode) {

    case 0xf4_03: { // Request Server information
        int serverId = buff.readUnsignedByte();
        ByteBuf buf = ctx.alloc().heapBuffer().order(ByteOrder.LITTLE_ENDIAN);

        WritePacket packet = SendServerInfo.StaticPacket;
        packet.write(null, buf, nameService, serverId);
        packet.markLength(buf);
        ;

        ctx.writeAndFlush(buf);
        break;
    }
    case 0xf4_06: { // Request Server list
        ByteBuf buf = ctx.alloc().heapBuffer().order(ByteOrder.LITTLE_ENDIAN);

        WritePacket packet = SendServerLists.StaticPacket;
        packet.write(null, buf, nameService);
        packet.markLength(buf);

        ctx.writeAndFlush(buf);
        break;
    }
    default:
        log.warn("Unkown packet[OPCODE = " + Integer.toHexString(opcode) + "] Dump: "
                + PrintData.printData(buff.nioBuffer(0, buff.writerIndex())));
        ctx.close();
        break;
    }
    buff.release();
}

From source file:com.vethrfolnir.network.ReadPacket.java

License:Open Source License

protected int readSh(ByteBuf buff) {
    return buff.readUnsignedShort();
}

From source file:de.gandev.modjn.entity.func.request.WriteMultipleRegistersRequest.java

License:Apache License

@Override
public void decode(ByteBuf data) {
    super.decode(data);

    byteCount = data.readUnsignedByte();

    registers = new int[byteCount / 2];
    for (int i = 0; i < registers.length; i++) {
        registers[i] = data.readUnsignedShort();
    }/*from   w  w w .ja v a  2  s .  c o m*/
}

From source file:de.gandev.modjn.entity.func.response.ReadHoldingRegistersResponse.java

License:Apache License

@Override
public void decode(ByteBuf data) {
    byteCount = data.readUnsignedByte();

    registers = new int[byteCount / 2];
    for (int i = 0; i < registers.length; i++) {
        registers[i] = data.readUnsignedShort();
    }/*from  ww  w .  j  a  v a  2  s  . co  m*/
}

From source file:de.gandev.modjn.entity.func.response.ReadInputRegistersResponse.java

License:Apache License

@Override
public void decode(ByteBuf data) {
    byteCount = data.readUnsignedByte();

    inputRegisters = new int[byteCount / 2];
    for (int i = 0; i < inputRegisters.length; i++) {
        inputRegisters[i] = data.readUnsignedShort();
    }/* ww  w  . java  2 s .  c o m*/
}

From source file:de.jackwhite20.comix.handler.HandshakeHandler.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> out)
        throws Exception {
    ByteBuf copy = byteBuf.copy();//from ww w  . j  a  v  a  2 s .c o  m

    Protocol.readVarInt(byteBuf);

    int packetId = Protocol.readVarInt(byteBuf);

    if (packetId == 0) {
        if (protocolMode == ProtocolState.HANDSHAKE) {
            Protocol.readVarInt(byteBuf);
            Protocol.readString(byteBuf);
            byteBuf.readUnsignedShort();
            protocolMode = ProtocolState.valueOf((byte) Protocol.readVarInt(byteBuf));
        }

        if (protocolMode == ProtocolState.STATUS) {
            ByteBuf responseBuffer = Unpooled.buffer();
            String response = Comix.getInstance().getStatusResponseString();
            response = response.replace("%online%", "" + Comix.getInstance().getClientsOnline()); // Replace online count
            Protocol.writeVarInt(3 + response.length(), responseBuffer); // Size
            Protocol.writeVarInt(0, responseBuffer); // Packet id
            Protocol.writeString(response, responseBuffer); // Data as json string
            channelHandlerContext.writeAndFlush(responseBuffer);

            // Sending Pong instant because otherwise the pong will not receive properly!
            ByteBuf pongBuffer = Unpooled.buffer();
            Protocol.writeVarInt(9, pongBuffer);
            Protocol.writeVarInt(1, pongBuffer);
            pongBuffer.writeLong(0);
            channelHandlerContext.writeAndFlush(pongBuffer);

            channelHandlerContext.close();
        }

        if (protocolMode == ProtocolState.LOGIN) {
            if (byteBuf.readableBytes() == 0) {
                upstreamHandler.connectDownstream(copy);

                downstreamInitialized = true;

                out.add(copy.retain());

                return;
            }

            String name = Protocol.readString(byteBuf);

            //TODO: Improve
            if (Comix.getInstance().getComixConfig().isMaintenance()) {
                if (Comix.getInstance().isWhitelistEnabled()) {
                    if (!Comix.getInstance().isWhitelisted(name)) {
                        kick(channelHandlerContext, Comix.getInstance().getWhitelistKickMessage());
                    }
                } else {
                    kick(channelHandlerContext,
                            Comix.getInstance().getComixConfig().getMaintenanceKickMessage());
                }

                channelHandlerContext.close();
                return;
            } else if (Comix.getInstance().isWhitelistEnabled() && !Comix.getInstance().isWhitelisted(name)) {
                kick(channelHandlerContext, Comix.getInstance().getWhitelistKickMessage());

                channelHandlerContext.close();
                return;
            }

            if (!downstreamInitialized)
                upstreamHandler.connectDownstream(copy);
            else
                upstreamHandler.addInitialPacket(copy);

            ComixClient comixClient = new ComixClient(name, upstreamHandler.getDownstreamHandler(),
                    upstreamHandler);
            Comix.getInstance().addClient(comixClient);
            upstreamHandler.setClient(comixClient);

            channelHandlerContext.channel().pipeline().remove(this);

            Comix.getLogger().log(Level.INFO, "Handshake", "Player logged in: " + name);

            out.add(copy.retain());
        }
    }
}