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:DescriptorTester.java

License:Open Source License

public void sender(ByteBuf buf) {

    DatagramSocket socket = null;
    try {// ww  w.j  a  v  a2 s  . c  o  m
        socket = new DatagramSocket();
    } catch (SocketException e) {
        e.printStackTrace();
    }
    InetAddress address = null;
    try {
        address = InetAddress.getLoopbackAddress();
        System.out.println(address);
    } catch (Exception e) {
        e.printStackTrace();
    }

    {
        System.out.printf("Capacity of ByteBuf  %d", buf.writableBytes());
        System.out.printf("Writer Index %d", buf.writerIndex());
        int packet_size = buf.writerIndex();
        System.out.printf("packetsize %d", packet_size);
        byte[] array = buf.array();
        DatagramPacket packet = new DatagramPacket(array, packet_size, address, 5246);
        try {
            socket.send(packet);
            System.out.printf("\nSending Capwap Message  ");
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

From source file:TestDescriptor.java

License:Open Source License

public void sender(ByteBuf buf) {

    DatagramSocket socket = null;
    try {/*from   ww w  . j  a  v a 2 s.  c  o m*/
        socket = new DatagramSocket();
    } catch (SocketException e) {
        e.printStackTrace();
    }
    InetAddress address = null;
    try {
        address = InetAddress.getLoopbackAddress();
        System.out.println(address);
    } catch (Exception e) {
        e.printStackTrace();
    }

    {
        System.out.printf("Capacity of ByteBuf  %d", buf.writableBytes());
        System.out.printf("Writer Index %d", buf.writerIndex());
        int packet_size = buf.writerIndex();
        System.out.printf("packetsize %d", packet_size);
        byte[] array = buf.array();
        DatagramPacket packet = new DatagramPacket(array, packet_size, address, 5246);
        try {
            socket.send(packet);
            System.out.printf("\nSending Capwap Message  ");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

From source file:WtpTestClient.java

License:Open Source License

public void sender(ByteBuf buf) {

    DatagramSocket socket = null;
    try {//from  w  w  w. ja  v  a  2  s .  c  o m
        socket = new DatagramSocket();
    } catch (SocketException e) {
        e.printStackTrace();
    }
    InetAddress address = null;
    try {
        address = InetAddress.getLoopbackAddress();
        System.out.println(address);
    } catch (Exception e) {
        e.printStackTrace();
    }

    {
        int packet_size = buf.writerIndex();
        byte[] array = buf.array();
        int port = 5246;
        DatagramPacket packet = new DatagramPacket(array, packet_size, address, port);
        try {
            socket.send(packet);
            System.out.printf("\nSending Capwap Message of size->%d to %s:%d ", packet_size, address.toString(),
                    port);
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

From source file:UdpClient.java

License:Open Source License

public static void main(String args[]) {

    byte[] buf = new byte[256];
    DatagramSocket socket = null;
    try {//  w ww  .j a va  2  s.c  o  m
        socket = new DatagramSocket();
    } catch (SocketException e) {
        e.printStackTrace();
    }
    InetAddress address = null;
    try {
        address = InetAddress.getLoopbackAddress();
        System.out.println(address);
    } catch (Exception e) {
        e.printStackTrace();
    }
    buf = "hello".getBytes();
    ByteBuf nett_buf = Unpooled.buffer();

    InetSocketAddress socketAddress = new InetSocketAddress(address, 5246);
    Scanner sc = new Scanner(System.in);
    {
        System.out.println("\nEnter Capwap Message ID");
        //int longIn = 4294967294;
        int longIn = 0XFFFFFFFE;
        nett_buf.writeInt(longIn);
        buf = nett_buf.array();

        DatagramPacket packet = new DatagramPacket(buf, nett_buf.writerIndex(), address, 5246);
        try {
            socket.send(packet);
            System.out.printf("\nSending Capwap Message %x ", longIn);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

From source file:CapwapMsgSender.java

License:Open Source License

public static void main(String args[]) {

    DatagramSocket socket = null;
    try {/*from ww  w  .j  a v  a2s  . com*/
        socket = new DatagramSocket();
    } catch (SocketException e) {
        e.printStackTrace();
    }
    InetAddress address = null;
    try {
        address = InetAddress.getLoopbackAddress();
        System.out.println(address);
    } catch (Exception e) {
        e.printStackTrace();
    }
    //ByteBuf nett_buf = Unpooled.buffer();
    ByteBuf buf = null;

    Scanner sc = new Scanner(System.in);
    while (true) {
        System.out.println("\nEnter Capwap Message ID");
        int capwapMsg = sc.nextInt();
        System.out.printf("Capacity of ByteBuf  %d", buf.writableBytes());
        System.out.printf("Writer Index %d", buf.writerIndex());
        int packet_size = buf.writerIndex();
        byte[] array = buf.array();
        DatagramPacket packet = new DatagramPacket(array, packet_size, address, 5246);
        try {
            socket.send(packet);
            System.out.printf("\nSending Capwap Message %s ", ODLCapwapConsts.msgTypetoString(capwapMsg));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

From source file:alluxio.worker.block.UnderFileSystemBlockReader.java

License:Apache License

/**
 * This interface is supposed to be used for sequence block reads.
 *
 * @param buf the byte buffer//from   ww  w  . ja  va2s  .c o m
 * @return the number of bytes read, -1 if it reaches EOF and none was read
 * @throws IOException if any I/O errors occur when reading the block
 */
@Override
public int transferTo(ByteBuf buf) throws IOException {
    Preconditions.checkState(!mClosed);
    if (mUnderFileSystemInputStream == null) {
        return -1;
    }
    if (mBlockMeta.getBlockSize() <= mInStreamPos) {
        return -1;
    }
    // Make a copy of the state to keep track of what we have read in this transferTo call.
    ByteBuf bufCopy = null;
    if (mBlockWriter != null) {
        bufCopy = buf.duplicate();
        bufCopy.readerIndex(bufCopy.writerIndex());
    }
    int bytesToRead = (int) Math.min((long) buf.writableBytes(), mBlockMeta.getBlockSize() - mInStreamPos);
    int bytesRead = buf.writeBytes(mUnderFileSystemInputStream, bytesToRead);

    if (bytesRead <= 0) {
        return bytesRead;
    }

    mInStreamPos += bytesRead;

    if (mBlockWriter != null) {
        bufCopy.writerIndex(buf.writerIndex());
        while (bufCopy.readableBytes() > 0) {
            mBlockWriter.transferFrom(bufCopy);
        }
    }

    return bytesRead;
}

From source file:at.yawk.dbus.protocol.object.ArrayObject.java

@Override
public void serialize(AlignableByteBuf buf) {
    ByteBuf tempBuffer = serializeValues(ArrayObject.allocateBufferForWrite(buf.getBuffer()));

    buf.alignWrite(4);//from  w w  w.j  a  va2  s .co  m
    buf.getBuffer().writeInt(tempBuffer.writerIndex());
    if (tempBuffer.isReadable()) {
        buf.getBuffer().writeBytes(tempBuffer);
    }
    tempBuffer.release();
}

From source file:books.netty.protocol.netty.codec.MarshallingEncoder.java

License:Apache License

protected void encode(Object msg, ByteBuf out) throws Exception {
    try {//from   www.  ja v  a2 s .  c om
        int lengthPos = out.writerIndex();
        out.writeBytes(LENGTH_PLACEHOLDER);
        ChannelBufferByteOutput output = new ChannelBufferByteOutput(out);
        marshaller.start(output);
        marshaller.writeObject(msg);
        marshaller.finish();
        out.setInt(lengthPos, out.writerIndex() - lengthPos - 4);
    } finally {
        marshaller.close();
    }
}

From source file:cloudeventbus.codec.Decoder.java

License:Open Source License

/**
 * Returns the number of bytes between the readerIndex of the haystack and
 * the first needle found in the haystack.  -1 is returned if no needle is
 * found in the haystack.//from w w w  .j av a 2  s  .  c om
 * <p/>
 * Copied from {@link io.netty.handler.codec.DelimiterBasedFrameDecoder}.
 */
private int indexOf(ByteBuf haystack, byte[] needle) {
    for (int i = haystack.readerIndex(); i < haystack.writerIndex(); i++) {
        int haystackIndex = i;
        int needleIndex;
        for (needleIndex = 0; needleIndex < needle.length; needleIndex++) {
            if (haystack.getByte(haystackIndex) != needle[needleIndex]) {
                break;
            } else {
                haystackIndex++;
                if (haystackIndex == haystack.writerIndex() && needleIndex != needle.length - 1) {
                    return -1;
                }
            }
        }

        if (needleIndex == needle.length) {
            // Found the needle from the haystack!
            return i - haystack.readerIndex();
        }
    }
    return -1;
}

From source file:com.allanbank.mongodb.netty.ByteToMessageDecoderTest.java

License:Apache License

/**
 * Test method for// w  ww .j a v a2 s.  c o  m
 * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}.
 *
 * @throws Exception
 *             On a test failure.
 */
@Test
public void testDecodeInCompleteFrame() throws Exception {
    final Random rand = new Random(System.currentTimeMillis());
    final Message msg = new KillCursors(new long[] { rand.nextLong() }, ReadPreference.PRIMARY);
    final int msgId = rand.nextInt() & 0xFFFFFF;

    final ByteBuf buffer = ourAllocator.buffer();

    final ByteBufOutputStream out = new ByteBufOutputStream(buffer);
    final BsonOutputStream bout = new BsonOutputStream(out);

    msg.write(msgId, bout);

    final ChannelHandlerContext mockContext = createMock(ChannelHandlerContext.class);

    replay(mockContext);

    final ByteToMessageDecoder decoder = new ByteToMessageDecoder(new StringDecoderCache());

    final Object result = decoder.decode(mockContext, buffer.slice(0, buffer.writerIndex() - 1));
    assertThat(result, nullValue());

    verify(mockContext);
}