Example usage for io.netty.buffer ByteBuf writeMedium

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

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

Introduction

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

Prototype

public abstract ByteBuf writeMedium(int value);

Source Link

Document

Sets the specified 24-bit medium integer at the current writerIndex and increases the writerIndex by 3 in this buffer.

Usage

From source file:buildcraft.commander.ContainerZonePlan.java

License:Minecraft Mod Public

private void computeMap(int cx, int cz, int width, int height, int blocksPerPixel, EntityPlayer player) {
    final byte[] textureData = new byte[width * height];

    int startX = cx - width * blocksPerPixel / 2;
    int startZ = cz - height * blocksPerPixel / 2;

    for (int i = 0; i < width; ++i) {
        for (int j = 0; j < height; ++j) {
            int x = startX + i * blocksPerPixel;
            int z = startZ + j * blocksPerPixel;
            int ix = x - (map.chunkStartX << 4);
            int iz = z - (map.chunkStartZ << 4);

            if (ix >= 0 && iz >= 0 && ix < TileZonePlan.RESOLUTION && iz < TileZonePlan.RESOLUTION) {
                textureData[i + j * width] = map.colors[ix + iz * TileZonePlan.RESOLUTION];
            }//from  w  ww  . j  ava 2  s.  c o  m
        }
    }

    BuildCraftCore.instance.sendToPlayer(player, new PacketCommand(this, "receiveImage", new CommandWriter() {
        public void write(ByteBuf data) {
            data.writeMedium(textureData.length);
            data.writeBytes(textureData);
        }
    }));
}

From source file:buildcraft.robotics.gui.ContainerZonePlan.java

License:Minecraft Mod Public

private void computeMap(int cx, int cz, int width, int height, float blocksPerPixel, EntityPlayer player) {
    final byte[] textureData = new byte[width * height];

    MapWorld w = BuildCraftRobotics.manager.getWorld(map.getWorldObj());
    int startX = Math.round(cx - width * blocksPerPixel / 2);
    int startZ = Math.round(cz - height * blocksPerPixel / 2);
    int mapStartX = map.chunkStartX << 4;
    int mapStartZ = map.chunkStartZ << 4;

    for (int i = 0; i < width; ++i) {
        for (int j = 0; j < height; ++j) {
            int x = Math.round(startX + i * blocksPerPixel);
            int z = Math.round(startZ + j * blocksPerPixel);
            int ix = x - mapStartX;
            int iz = z - mapStartZ;

            if (ix >= 0 && iz >= 0 && ix < TileZonePlan.RESOLUTION && iz < TileZonePlan.RESOLUTION) {
                textureData[i + j * width] = (byte) w.getColor(x, z);
            }/* w w  w.j  a va2s . c  o  m*/
        }
    }

    final int len = MAX_PACKET_LENGTH;

    for (int i = 0; i < textureData.length; i += len) {
        final int pos = i;
        BuildCraftCore.instance.sendToPlayer(player,
                new PacketCommand(this, "receiveImage", new CommandWriter() {
                    public void write(ByteBuf data) {
                        data.writeMedium(textureData.length);
                        data.writeMedium(pos);
                        data.writeBytes(textureData, pos, Math.min(textureData.length - pos, len));
                    }
                }));
    }
}

From source file:com.cc.nettytest.proxy.encoder.CCLengthFieldPrepender.java

License:Apache License

@Override
public void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) throws Exception {

    int length = lengthIncludesLengthFieldLength ? msg.readableBytes() + lengthFieldLength
            : msg.readableBytes();// w  w  w  .j  ava  2 s .  c o  m
    switch (lengthFieldLength) {
    case 1:
        if (length >= 256) {
            throw new IllegalArgumentException("length does not fit into a byte: " + length);
        }
        out.writeByte((byte) length);
        break;
    case 2:
        if (length >= 65536) {
            throw new IllegalArgumentException("length does not fit into a short integer: " + length);
        }
        out.writeShort((short) length);
        break;
    case 3:
        if (length >= 16777216) {
            throw new IllegalArgumentException("length does not fit into a medium integer: " + length);
        }
        out.writeMedium(length);
        break;
    case 4:
        out.writeInt(ByteBufUtil.swapInt((int) length)); //SWAP FOR UIMANAGER
        break;
    case 8:
        out.writeLong(length);
        break;
    default:
        throw new Error("should not reach here");
    }

    out.writeBytes(msg, msg.readerIndex(), msg.readableBytes());
}

From source file:com.digitalpetri.opcua.stack.core.channel.headers.SecureMessageHeader.java

License:Apache License

public static void encode(SecureMessageHeader header, ByteBuf buffer) throws UaException {
    buffer.writeMedium(MessageType.toMediumInt(header.getMessageType()));
    buffer.writeByte(header.getChunkType());
    buffer.writeInt((int) header.getMessageSize());
    buffer.writeInt((int) header.getSecureChannelId());
}

From source file:com.digitalpetri.opcua.stack.core.channel.messages.TcpMessageEncoder.java

License:Apache License

/**
 * Encode a simple UA TCP message./*w w w. j  av  a 2 s .  c  o m*/
 *
 * @param messageType    {@link MessageType#Hello}, {@link MessageType#Acknowledge}, or {@link MessageType#Error}.
 * @param messageEncoder a function that encodes the message payload.
 * @param buffer         the {@link ByteBuf} to encode into.
 */
private static ByteBuf encode(MessageType messageType, Consumer<ByteBuf> messageEncoder, ByteBuf buffer)
        throws UaException {
    buffer.writeMedium(MessageType.toMediumInt(messageType));
    buffer.writeByte('F');

    int lengthIndex = buffer.writerIndex();
    buffer.writeInt(0);

    int indexBefore = buffer.writerIndex();
    messageEncoder.accept(buffer);
    int indexAfter = buffer.writerIndex();
    int bytesWritten = indexAfter - indexBefore;

    buffer.writerIndex(lengthIndex);
    buffer.writeInt(8 + bytesWritten);
    buffer.writerIndex(indexAfter);

    return buffer;
}

From source file:com.netty.grpc.proxy.demo.handler.GrpcProxyBackendHandler.java

License:Apache License

@Override
public void channelRead(final ChannelHandlerContext ctx, Object msg) {
    ByteBuf buf = (ByteBuf) msg;/*  ww  w . j a v a2  s  .  com*/
    System.out.println("channelRead:" + ByteBufUtil.hexDump((buf)));
    while (buf.readableBytes() > 0) {

        int payload = buf.readUnsignedMedium();
        int frameType = buf.readByte();
        Http2Flags flags = new Http2Flags(buf.readUnsignedByte());
        int streamId = readUnsignedInt(buf);
        ByteBuf payloadBuf = buf.readBytes(payload);
        ByteBuf copy = ctx.alloc().buffer();
        System.out.println("frame_type:" + frameType + "," + ByteBufUtil.hexDump((payloadBuf)));
        switch (frameType) {
        case Http2FrameTypes.SETTINGS:
            handleSettingFrame(ctx, flags);
            break;
        case Http2FrameTypes.WINDOW_UPDATE:
            handleWindowsUpdateFrame(ctx);
            break;
        case Http2FrameTypes.HEADERS:

            copy.writeMedium(payload);
            copy.writeByte(frameType);
            copy.writeByte(flags.value());
            copy.writeInt(streamId);
            copy.writeBytes(payloadBuf);
            forward(ctx, copy);
            break;
        case Http2FrameTypes.DATA:
            copy.writeMedium(payload);
            copy.writeByte(frameType);
            copy.writeByte(flags.value());
            copy.writeInt(streamId);
            copy.writeBytes(payloadBuf);
            forward(ctx, copy);
            break;
        default:
            break;

        }
    }

}

From source file:com.netty.grpc.proxy.demo.handler.GrpcProxyFrontendHandler.java

License:Apache License

private void readFrame(final ChannelHandlerContext ctx, ByteBuf buf) {
    if (first) {//  ww w.  ja  va  2s .co  m
        try {
            readClientPrefaceString(buf);
        } catch (Http2Exception e) {
            e.printStackTrace();
        }
        first = false;
    }

    while (buf.readableBytes() > 0) {

        int payload = buf.readUnsignedMedium();
        int frameType = buf.readByte();
        Http2Flags flags = new Http2Flags(buf.readUnsignedByte());
        int streamId = readUnsignedInt(buf);
        ByteBuf payloadBuf = buf.readBytes(payload);
        ByteBuf copy = ctx.alloc().buffer();
        switch (frameType) {
        case Http2FrameTypes.SETTINGS:
            handleSettingFrame(ctx, flags);
            break;
        case Http2FrameTypes.WINDOW_UPDATE:
            handleWindowsUpdateFrame(ctx);
            break;
        case Http2FrameTypes.HEADERS:

            copy.writeMedium(payload);
            copy.writeByte(frameType);
            copy.writeByte(flags.value());
            copy.writeInt(streamId);
            copy.writeBytes(payloadBuf);
            handleHeaderFrame(ctx, copy, streamId);
            break;
        case Http2FrameTypes.DATA:
            copy.writeMedium(payload);
            copy.writeByte(frameType);
            copy.writeByte(flags.value());
            copy.writeInt(streamId);
            copy.writeBytes(payloadBuf);
            handleDataFrame(ctx, copy, streamId);
            break;
        default:
            break;

        }
    }
}

From source file:com.tesora.dve.db.mysql.common.MysqlAPIUtils.java

License:Open Source License

public static void putLengthCodedLong(ByteBuf cb, long length) {
    if (length <= LEN_CODED_8_BITS) {
        cb.writeByte((int) length); // length is 1 byte
    } else if (length <= UNSIGNED_SHORT_MAX) {
        cb.writeByte(LEN_CODED_16_BITS); // length is 2 bytes
        cb.writeShort((int) length);
    } else if (length <= UNSIGNED_MEDIUM_MAX) {
        cb.writeByte(LEN_CODED_24_BITS); // length is 3 bytes
        cb.writeMedium((int) length);
    } else {/*from   w w w.j a v a2  s . co m*/
        cb.writeByte(LEN_CODED_64_BITS); // length is 8 bytes
        cb.writeLong(length);
    }
}

From source file:com.tesora.dve.db.mysql.portal.protocol.MSPAuthenticateV10MessageMessage.java

License:Open Source License

public static void write(ByteBuf out, String userName, String userPassword, String salt, Charset charset,
        int mysqlCharsetID, int capabilitiesFlag) {
    ByteBuf leBuf = out.order(ByteOrder.LITTLE_ENDIAN);

    int payloadSizeIndex = leBuf.writerIndex();
    leBuf.writeMedium(0);
    leBuf.writeByte(1);/*ww  w .  ja v  a2 s .  co  m*/
    int payloadStartIndex = leBuf.writerIndex();
    leBuf.writeInt(capabilitiesFlag);
    leBuf.writeInt(MAX_PACKET_SIZE);
    //      leBuf.writeByte(serverGreeting.getServerCharsetId());
    leBuf.writeByte(mysqlCharsetID);
    leBuf.writeZero(23);
    leBuf.writeBytes(userName.getBytes(charset));
    leBuf.writeZero(1);

    if ((capabilitiesFlag & ClientCapabilities.CLIENT_SECURE_CONNECTION) > 0) {

        byte[] securePassword = computeSecurePassword(userPassword, salt);
        leBuf.writeByte(securePassword.length);
        leBuf.writeBytes(securePassword);
    } else {
        leBuf.writeBytes(userPassword.getBytes(charset));
        leBuf.writeZero(1);
    }

    leBuf.setMedium(payloadSizeIndex, leBuf.writerIndex() - payloadStartIndex);
}

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  ww. j av  a  2s .  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();
    }
}