Example usage for io.netty.buffer ByteBuf readByte

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

  1. HOME
  2. Java
  3. io.netty
  4. io.netty.buffer.*
  5. ByteBuf
  6. readByte

Introduction

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

Prototype

public abstract byte readByte();

Source Link

Document

Gets a byte at the current readerIndex and increases the readerIndex by 1 in this buffer.

Usage

From source file:com.farsunset.cim.sdk.server.filter.decoder.AppMessageDecoder.java

License:Apache License

@Override
public void decode(ChannelHandlerContext arg0, ByteBuf buffer, List<Object> queue) throws Exception {

    /**//from  w w  w. j a  v a2 s. co  m
     * ?3?
     */
    if (buffer.readableBytes() < CIMConstant.DATA_HEADER_LENGTH) {
        return;
    }

    buffer.markReaderIndex();

    byte conetnType = buffer.readByte();

    byte lv = buffer.readByte();// int ?
    byte hv = buffer.readByte();// int ?

    int conetnLength = getContentLength(lv, hv);

    // ?????
    if (conetnLength <= buffer.readableBytes()) {
        byte[] dataBytes = new byte[conetnLength];
        buffer.readBytes(dataBytes);

        Object message = mappingMessageObject(dataBytes, conetnType);
        if (message != null) {
            arg0.channel().attr(AttributeKey.valueOf(CIMSession.PROTOCOL)).set(CIMSession.NATIVEAPP);
            queue.add(message);
            return;
        }
    }

    buffer.resetReaderIndex();
}

From source file:com.farsunset.cim.sdk.server.filter.decoder.WebMessageDecoder.java

License:Apache License

@Override
public void decode(ChannelHandlerContext arg0, ByteBuf iobuffer, List<Object> queue) throws Exception {

    iobuffer.markReaderIndex();//from w  ww . j a  va 2  s.c  o  m

    /**
     * ?fin??1 0 ??
     */
    byte tag = iobuffer.readByte();
    int frameFin = tag > 0 ? 0 : 1; // ?byte ?1 ?0 fin 0  1
    if (frameFin == 0) {
        iobuffer.resetReaderIndex();
        return;
    }

    /**
     * ?protobuf?? OPCODE_BINARY? OPCODE_CLOSE
     */
    int frameOqcode = tag & TAG_MASK;

    if (OPCODE_BINARY == frameOqcode) {

        byte head = iobuffer.readByte();
        byte datalength = (byte) (head & PAYLOADLEN);
        int realLength = 0;

        /**
         * Payload len7?7+16?7+64????? 0-125payload
         * data 1267????2payload data
         * 1277????8payload data
         */
        if (datalength == HAS_EXTEND_DATA) {
            realLength = iobuffer.readShort();
        } else if (datalength == HAS_EXTEND_DATA_CONTINUE) {
            realLength = (int) iobuffer.readLong();
        } else {
            realLength = datalength;
        }

        boolean masked = (head >> 7 & MASK) == 1;
        if (masked) {// ?
            // ??
            byte[] mask = new byte[4];
            iobuffer.readBytes(mask);

            byte[] data = new byte[realLength];
            iobuffer.readBytes(data);
            for (int i = 0; i < realLength; i++) {
                // ??
                data[i] = (byte) (data[i] ^ mask[i % 4]);
            }

            handleMessage(data, queue);
        }

    } else if (OPCODE_CLOSE == frameOqcode) {
        handleClose(arg0);
    } else {
        // ?
        iobuffer.readBytes(new byte[iobuffer.readableBytes()]);
    }

}

From source file:com.fjn.helper.frameworkex.netty.v4.discardserver.DiscardServerHandler.java

License:Apache License

/**
 * ??//from w w  w  .j  av  a2s  .  c  o  m
 */
public void channelRead2(ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf in = (ByteBuf) msg;
    try {
        while (in.isReadable()) {
            System.out.print((char) in.readByte());
            System.out.flush();
        }
    } finally {
        ReferenceCountUtil.release(msg);
    }
}

From source file:com.fjn.helper.frameworkex.netty.v4.discardserver.DiscardServerHandler.java

License:Apache License

/**
 * ???//from  w  w w  .  j a v a 2s . co  m
 * @param ctx
 * @param msg
 * @throws Exception
 */
public void channelRead(final ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf in = (ByteBuf) msg;
    try {
        while (in.isReadable()) {
            char c = (char) in.readByte();
            content += c;
            if (c == '\n' || c == '\r') {
                if (!line.isEmpty()) {
                    System.out.println(line);
                }
                if ("quit".equals(line)) {
                    ByteBuf bf = ctx.alloc().buffer(content.getBytes().length);
                    bf.setBytes(0, content.getBytes());
                    final ChannelFuture f = ctx.writeAndFlush(bf); // (3)
                    f.addListener(new ChannelFutureListener() {
                        @Override
                        public void operationComplete(ChannelFuture future) throws InterruptedException {
                            assert f == future;
                            ctx.close();
                        }
                    }); // (4)
                }
                line = "";
                continue;
            } else {
                line += c;
            }
        }
    } finally {
        ReferenceCountUtil.release(msg);
    }
}

From source file:com.flowpowered.engine.network.codec.ChunkDataCodec.java

License:MIT License

@Override
public ChunkDataMessage decode(ByteBuf buffer) throws IOException {
    final byte info = buffer.readByte();
    final boolean unload = (info & ISUNLOAD) == ISUNLOAD;
    final int x = buffer.readInt();
    final int y = buffer.readInt();
    final int z = buffer.readInt();
    if (unload) {
        return new ChunkDataMessage(x, y, z);
    } else {//from  w w  w .j a  v a 2 s .  c  o m
        int uncompressedSize = INTIAL_DATA_SIZE;
        final byte[] uncompressedData = new byte[uncompressedSize];
        final byte[] compressedData = new byte[buffer.readInt()];
        buffer.readBytes(compressedData);
        Inflater inflater = new Inflater();
        inflater.setInput(compressedData);
        try {
            inflater.inflate(uncompressedData);
        } catch (DataFormatException e) {
            throw new IOException("Error while reading chunk (" + x + "," + y + "," + z + ")!", e);
        }
        inflater.end();

        final int[] blocks = new int[Chunk.BLOCKS.VOLUME];

        int index = 0;
        for (int i = 0; i < blocks.length; ++i) {
            blocks[i] = uncompressedData[index++] | (uncompressedData[index++] << 8)
                    | (uncompressedData[index++] << 16) | (uncompressedData[index++] << 24);
        }

        if (index != uncompressedData.length) {
            throw new IllegalStateException(
                    "Incorrect parse size - actual:" + index + " expected: " + uncompressedData.length);
        }

        return new ChunkDataMessage(x, y, z, blocks);
    }
}

From source file:com.flowpowered.engine.network.codec.InputSnapshotCodec.java

License:MIT License

@Override
public InputSnapshotMessage decode(ByteBuf buf) throws IOException {
    List<KeyboardEvent> keyEvents = new LinkedList<>();
    int amount = buf.readInt();
    for (int i = 0; i < amount; i++) {
        keyEvents.add(new KeyboardEvent(buf.readByte(), buf.readBoolean()));
    }//from  www .jav  a 2 s. c  o m
    amount = buf.readInt();
    List<MouseEvent> mouseEvents = new LinkedList<>();
    for (int i = 0; i < amount; i++) {
        mouseEvents.add(new MouseEvent(buf.readInt(), buf.readInt(), buf.readInt(), buf.readInt(),
                buf.readInt(), buf.readInt(), buf.readBoolean()));
    }

    return new InputSnapshotMessage(buf.readFloat(), buf.readBoolean(), keyEvents, mouseEvents);
}

From source file:com.flowpowered.engine.network.codec.UpdateEntityCodec.java

License:MIT License

@Override
public UpdateEntityMessage decode(ByteBuf buffer) {
    final byte actionByte = buffer.readByte();
    if (actionByte < 0 || actionByte >= UpdateAction.values().length) {
        throw new IllegalArgumentException("Unknown response ID " + actionByte);
    }/*from   w w  w.jav  a2s  . c o m*/

    final UpdateAction action = UpdateAction.values()[actionByte];
    final int entityId = buffer.readInt();
    final Transform transform;
    switch (action) {
    case REMOVE:
        transform = null;
        break;
    case ADD:
    case TRANSFORM:
        transform = FlowByteBufUtils.readTransform(buffer);
        break;
    case POSITION:
        throw new UnsupportedOperationException("Position is unimplemented!");
    default:
        throw new IllegalArgumentException("Unknown UpdateAction!");
    }

    return new UpdateEntityMessage(entityId, transform, action, NullRepositionManager.INSTANCE);
}

From source file:com.flowpowered.engine.network.FlowProtocol.java

License:MIT License

@Override
public Codec<?> readHeader(ByteBuf buf) throws UnknownPacketException {
    byte opcode = -1;
    try {/*from  w  w w . j a va2  s.  c o  m*/
        opcode = buf.readByte();
        return getCodecLookupService().find(opcode);
    } catch (IllegalOpcodeException ex) {
        throw new UnknownPacketException("Unknown packet", opcode, -1);
    }
}

From source file:com.flowpowered.network.util.ByteBufUtils.java

License:MIT License

/**
 * Reads an integer written into the byte buffer as one of various bit sizes.
 *
 * @param buf The byte buffer to read from
 * @return The read integer/*  w w w  . j  ava  2s.c o m*/
 * @throws java.io.IOException If the reading fails
 */
public static int readVarInt(ByteBuf buf) throws IOException {
    int out = 0;
    int bytes = 0;
    byte in;
    while (true) {
        in = buf.readByte();
        out |= (in & 0x7F) << (bytes++ * 7);
        if (bytes > 5) {
            throw new IOException("Attempt to read int bigger than allowed for a varint!");
        }
        if ((in & 0x80) != 0x80) {
            break;
        }
    }
    return out;
}

From source file:com.flowpowered.network.util.ByteBufUtils.java

License:MIT License

/**
 * Reads an integer written into the byte buffer as one of various bit sizes.
 *
 * @param buf The byte buffer to read from
 * @return The read integer/*  w w  w . j  a  v  a2  s.co m*/
 * @throws java.io.IOException If the reading fails
 */
public static long readVarLong(ByteBuf buf) throws IOException {
    long out = 0;
    int bytes = 0;
    byte in;
    while (true) {
        in = buf.readByte();
        out |= (in & 0x7F) << (bytes++ * 7);
        if (bytes > 10) {
            throw new IOException("Attempt to read long bigger than allowed for a varlong!");
        }
        if ((in & 0x80) != 0x80) {
            break;
        }
    }
    return out;
}