Example usage for io.netty.buffer ByteBuf writerIndex

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

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Introduction

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

Prototype

public abstract int writerIndex();

Source Link

Document

Returns the writerIndex of this buffer.

Usage

From source file:com.tesora.dve.db.mysql.portal.protocol.MSPServerGreetingRequestMessage.java

License:Open Source License

public static void write(ChannelHandlerContext ctx, int connectionId, String salt, int serverCapabilities,
        String serverVersion, byte serverCharSet, String pluginData) {
    ByteBuf out = ctx.channel().alloc().heapBuffer(50).order(ByteOrder.LITTLE_ENDIAN);

    String scrambleBuffer1st = salt.substring(0, 8);
    String scrambleBuffer2nd = salt.substring(8) + '\0';
    Integer scrambleBufferSize = scrambleBuffer1st.length() + scrambleBuffer2nd.length();

    ByteBuf serverCapabilitiesBuf = ctx.channel().alloc().heapBuffer(4).order(ByteOrder.LITTLE_ENDIAN);
    try {//from   w  w  w.ja  v  a2s . c o m
        serverCapabilitiesBuf.writeInt(serverCapabilities);
        out.writeMedium(0);
        out.writeByte(0);
        out.writeByte(MYSQL_PROTOCOL_VERSION);

        out.writeBytes(serverVersion.getBytes());
        out.writeZero(1);
        out.writeInt(connectionId);
        out.writeBytes(scrambleBuffer1st.getBytes()); // Salt
        out.writeZero(1);
        out.writeByte(serverCapabilitiesBuf.getByte(0));
        out.writeByte(serverCapabilitiesBuf.getByte(1));

        out.writeByte(serverCharSet);
        out.writeShort(MyProtocolDefs.SERVER_STATUS_AUTOCOMMIT);
        out.writeByte(serverCapabilitiesBuf.getByte(2));
        out.writeByte(serverCapabilitiesBuf.getByte(3));
        out.writeByte(scrambleBufferSize.byteValue());
        out.writeZero(10); // write 10 unused bytes
        out.writeBytes(scrambleBuffer2nd.getBytes()); // Salt

        out.writeBytes(pluginData.getBytes()); // payload
        out.writeZero(1);

        out.setMedium(0, out.writerIndex() - 4);

        ctx.channel().writeAndFlush(out);
    } finally {
        serverCapabilitiesBuf.release();
    }
}

From source file:com.turn.ttorrent.client.io.PeerMessageCodec.java

License:Apache License

@Override
protected void encode(ChannelHandlerContext ctx, PeerMessage value, ByteBuf out) throws Exception {
    // LOG.info("encode: " + value);
    int lengthIndex = out.writerIndex();
    out.writeInt(0);/*from ww w  . ja va2 s .c  om*/
    int startIndex = out.writerIndex();
    value.toWire(out, listener.getExtendedMessageTypes());
    out.setInt(lengthIndex, out.writerIndex() - startIndex);
}

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

License:Open Source License

public static TFrame encode(ByteBufAllocator allocator, Frame msg) {
    ByteBuf buffer = null;
    if (msg instanceof CallFrame) {
        buffer = ((CallFrame) msg).getPayload();
    } else {/*  w  ww .  ja  va2 s  .c om*/
        buffer = msg.encodeHeader(allocator);
    }

    TFrame frame = new TFrame(buffer.writerIndex(), msg.getType(), msg.getId(), buffer);
    return frame;
}

From source file:com.vethrfolnir.game.network.login.LoginServerClientHandler.java

License:Open Source License

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

    int opcode = buff.readUnsignedByte();

    switch (opcode) {
    case 0xBB:/*from   w  w  w  .  j a v a 2s .co m*/
        ServerKill.read(serverClient, buff);
        break;
    case 0xA1:
        int newId = buff.readInt();
        RecievedAlternativeId.read(serverClient, buff, newId);
        break;
    default:
        log.warn("Unknown packet 0x" + PrintData.fillHex(opcode, 2) + ". Dump: "
                + PrintData.printData(buff.nioBuffer(0, buff.writerIndex())));
        break;
    }

    buff.release();
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuDecoder.java

License:Open Source License

/**
 * C3 C4//w w  w  .  ja v a 2 s .com
 * @param buff
 * @return 
 */
public static ByteBuf DecodePacket(ByteBuf buff) {
    if (buff.writerIndex() <= 2) {
        log.fatal("Ambiguous buffer! " + ByteBufUtil.hexDump(buff));
        return null;
    }
    if (buff.readerIndex() != 0) {
        log.warn("Buffer must be at index 0!");
        buff.readerIndex(0);
    }

    int header = GetHeaderSize(buff);
    int packetSize = GetPacketSize(buff);
    int decodedSize = GetDecodedSize(buff);

    int contentSize = packetSize - header;

    //System.out.println("Header[0x"+PrintData.fillHex(buff.getUnsignedByte(0), 2)+"] size: "+GetHeaderSize(buff)+" Packet Size: "+GetPacketSize(buff) +" Content Size: "+contentSize +" Decoded: "+ GetDecodedSize(buff));

    ByteBuf out = alloc.heapBuffer(decodedSize, decodedSize);

    int originalHead = buff.getUnsignedByte(0);

    buff.readerIndex(header);
    int size = DecodeBlock(buff, out, header, contentSize);
    //buff.clear();

    size += header - 1;

    out.writerIndex(0);
    out.writeByte(originalHead);

    switch (originalHead) {
    case 0xc3:
        out.writeByte(size);
        break;
    case 0xC4:
        out.writeByte(size >> 8);
        out.writeByte(size & 0xFF);
        break;
    }

    out.writerIndex(size);
    out.readerIndex(header);

    DecXor32(out, header, size);

    out.readerIndex(0);
    return out;
}

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;/* 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 ww . ja  v  a 2s  .  c om*/
    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 void invalidate(ByteBuf buff) {
    buff.readerIndex(buff.writerIndex());
}

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

License:Open Source License

public void markLength(ByteBuf buff) {
    int lenght = buff.writerIndex();
    switch (buff.getUnsignedByte(0)) {
    case 0xC1://from  w ww.  j  av a 2  s  . c  o  m
    case 0xC3:
        buff.setByte(1, lenght);
        break;
    case 0xC2:
    case 0xC4:
        buff.setByte(1, lenght >> 8);
        buff.setByte(2, lenght & 0xFF);
        break;
    }
}

From source file:com.whizzosoftware.hobson.radiora.api.codec.RadioRaFrameDecoder.java

License:Open Source License

@Override
protected Object decode(ChannelHandlerContext ctx, ByteBuf buffer) throws Exception {
    logger.trace("decode: {}", buffer.toString(CharsetUtil.UTF_8));

    ByteBuf frame = (ByteBuf) super.decode(ctx, buffer);

    if (frame != null) {
        // if we receive a single byte frame, it should be a '!'
        if (frame.readableBytes() == 1) {
            byte b = frame.readByte();
            if (b == '!') {
                return null;
            } else {
                throw new CorruptedFrameException("Unexpected single byte frame");
            }/*from   www .j  a  v  a 2 s  .c o  m*/
            // otherwise, we assume it's a command frame
        } else {
            int ix = frame.indexOf(frame.readerIndex(), frame.writerIndex(), (byte) ',');
            if (ix > 0) {
                String cmdName = frame.slice(0, ix).toString(CharsetUtil.UTF_8);

                switch (cmdName) {
                case ZoneMap.TYPE:
                    if (frame.readableBytes() >= ix + 33) {
                        return new ZoneMap(frame.slice(ix + 1, 32).toString(CharsetUtil.UTF_8));
                    } else {
                        throw new CorruptedFrameException("Received invalid zone map size");
                    }

                case LocalZoneChange.TYPE:
                    if (frame.readableBytes() >= ix + 3) {
                        String sZoneNum = frame.slice(ix + 1, 2).toString(CharsetUtil.UTF_8);
                        if (frame.readableBytes() >= ix + 7) {
                            String state = frame.slice(ix + 4, 3).toString(CharsetUtil.UTF_8).trim();
                            try {
                                return new LocalZoneChange(Integer.parseInt(sZoneNum),
                                        LocalZoneChange.State.valueOf(state));
                            } catch (IllegalArgumentException iae) {
                                throw new CorruptedFrameException("Invalid LZC state string");
                            }
                        } else {
                            throw new CorruptedFrameException("Invalid LZC size (state)");
                        }
                    } else {
                        throw new CorruptedFrameException("Invalid LZC size (zoneNum)");
                    }

                case LEDMap.TYPE:
                    if (frame.readableBytes() >= ix + 16) {
                        return new LEDMap(frame.slice(ix + 1, 15).toString(CharsetUtil.UTF_8));
                    } else {
                        throw new CorruptedFrameException("Invalid LED map size");
                    }

                default:
                    throw new DecoderException("Unrecognized command: " + cmdName);
                }
            } else {
                throw new CorruptedFrameException("Invalid frame format (no comma)");
            }
        }
    } else {
        return null;
    }
}