Example usage for io.netty.buffer ByteBuf clear

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

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Introduction

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

Prototype

public abstract ByteBuf clear();

Source Link

Document

Sets the readerIndex and writerIndex of this buffer to 0 .

Usage

From source file:org.opendaylight.protocol.util.ByteBufWriteUtilTest.java

License:Open Source License

@Test
public void testWriteUnsignedLongValue() {
    final byte[] result = { 0, 0, 0, 0, 0, 0, 0, 5 };
    final ByteBuf output = Unpooled.buffer(ByteBufWriteUtil.LONG_BYTES_LENGTH);
    writeUnsignedLong(new BigInteger("5"), output);
    assertArrayEquals(result, output.array());

    output.clear();
    writeUnsignedLong(null, output);/*from  w  w w .  j  av  a2  s .  co m*/
    assertArrayEquals(EIGHT_BYTE_ZEROS, output.array());
}

From source file:org.opendaylight.protocol.util.ByteBufWriteUtilTest.java

License:Open Source License

@Test
public void testWriteIpv4Address() {
    final byte[] result = { 127, 0, 0, 1 };
    final ByteBuf output = Unpooled.buffer(Ipv4Util.IP4_LENGTH);
    writeIpv4Address(new Ipv4Address("127.0.0.1"), output);
    assertArrayEquals(result, output.array());

    output.clear();
    writeIpv4Address(null, output);/* w w  w .  j  ava2  s  . c  om*/
    assertArrayEquals(FOUR_BYTE_ZEROS, output.array());
}

From source file:org.opendaylight.protocol.util.ByteBufWriteUtilTest.java

License:Open Source License

@Test
public void testWriteIpv4Prefix() {
    final byte[] result = { 123, 122, 4, 5, 8 };
    final ByteBuf output = Unpooled.buffer(ByteBufWriteUtil.IPV4_PREFIX_BYTE_LENGTH);
    writeIpv4Prefix(new Ipv4Prefix("123.122.4.5/8"), output);
    assertArrayEquals(result, output.array());

    output.clear();
    final byte[] zeroResult = { 0, 0, 0, 0, 0 };
    writeIpv4Prefix(null, output);//from   w w w .  j av  a  2  s.  co  m
    assertArrayEquals(zeroResult, output.array());
}

From source file:org.opendaylight.protocol.util.ByteBufWriteUtilTest.java

License:Open Source License

@Test
public void testWriteIpv6Address() {
    final byte[] result = { 0x20, (byte) 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x01 };//from   w ww  .ja v a  2  s . co m
    final ByteBuf output = Unpooled.buffer(Ipv6Util.IPV6_LENGTH);
    writeIpv6Address(new Ipv6Address("2001::1"), output);
    assertArrayEquals(result, output.array());

    output.clear();
    final byte[] zeroResult = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };
    writeIpv6Address(null, output);
    assertArrayEquals(zeroResult, output.array());
}

From source file:org.opendaylight.protocol.util.ByteBufWriteUtilTest.java

License:Open Source License

@Test
public void testWriteIpv6Prefix() {
    final byte[] result = { 0x20, (byte) 0x01, 0x0d, (byte) 0xb8, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x40 };
    final ByteBuf output = Unpooled.buffer(ByteBufWriteUtil.IPV6_PREFIX_BYTE_LENGTH);
    writeIpv6Prefix(new Ipv6Prefix("2001:db8:1:2::/64"), output);
    assertArrayEquals(result, output.array());

    output.clear();
    final byte[] zeroResult = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
    writeIpv6Prefix(null, output);//  ww w. j  a  v  a  2  s . c o m
    assertArrayEquals(zeroResult, output.array());
}

From source file:org.opendaylight.protocol.util.ByteBufWriteUtilTest.java

License:Open Source License

@Test
public void testWriteFloat32() {
    final byte[] result = { 0, 0, 0, 5 };
    final ByteBuf output = Unpooled.buffer(ByteBufWriteUtil.FLOAT32_BYTES_LENGTH);
    writeFloat32(new Float32(result), output);
    assertArrayEquals(result, output.array());

    output.clear();
    writeFloat32(null, output);/*from   ww  w . j  av  a2s .  co m*/
    assertArrayEquals(FOUR_BYTE_ZEROS, output.array());
}

From source file:org.opendaylight.protocol.util.ByteBufWriteUtilTest.java

License:Open Source License

@Test
public void testWriteBitSet() {
    final byte[] result = { 1 };
    final ByteBuf output = Unpooled.buffer(1);
    final BitSet bitSet = new BitSet(8);
    bitSet.set(7);/* w w w . ja  va2 s .co  m*/
    writeBitSet(bitSet, 1, output);
    assertArrayEquals(result, output.array());

    output.clear();
    writeBitSet(null, 1, output);
    assertArrayEquals(ONE_BYTE_ZERO, output.array());
}

From source file:org.starnub.starbounddata.packets.Packet.java

License:Open Source License

/**
 * Recommended: For internal use with StarNub Player Sessions
 * <p>/*from  w w w  .  j av a 2 s  .  c  o m*/
 * Uses: This method will write to a {@link io.netty.buffer.ByteBuf} using this packets fields
 * <p>
 *
 * @return ByteBuf representing the ByteBuf to write to socket
 */
public ByteBuf packetToMessageEncoder() {
    ByteBuf msgOut = PooledByteBufAllocator.DEFAULT.directBuffer();
    this.write(msgOut);
    int payloadLengthOut = msgOut.readableBytes();
    byte[] dataOut;
    if (payloadLengthOut > 100) {
        dataOut = Zlib.compress(msgOut.readBytes(payloadLengthOut).array());
        payloadLengthOut = -dataOut.length;
    } else {
        dataOut = msgOut.readBytes(payloadLengthOut).array();
    }
    msgOut.clear();
    msgOut.writeByte(PACKET_ID);
    writeSVLQPacketEncoder(msgOut, payloadLengthOut);
    msgOut.writeBytes(dataOut);
    return msgOut;
}

From source file:org.traccar.protocol.Tk103FrameDecoder.java

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    if (buf.readableBytes() < 2) {
        return null;
    }/*from  w w w  . j  av  a 2 s .  c  o  m*/

    int frameStartIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '(');
    if (frameStartIndex == -1) {
        buf.clear();
        return null;
    }

    int frameEndIndex, freeTextSymbolCounter;
    for (frameEndIndex = frameStartIndex, freeTextSymbolCounter = 0;; frameEndIndex++) {
        int freeTextIndex = frameEndIndex;
        frameEndIndex = buf.indexOf(frameEndIndex, buf.writerIndex(), (byte) ')');
        if (frameEndIndex == -1) {
            break;
        }
        for (;; freeTextIndex++, freeTextSymbolCounter++) {
            freeTextIndex = buf.indexOf(freeTextIndex, frameEndIndex, (byte) '$');
            if (freeTextIndex == -1 || freeTextIndex >= frameEndIndex) {
                break;
            }
        }
        if (freeTextSymbolCounter % 2 == 0) {
            break;
        }
    }

    if (frameEndIndex == -1) {
        while (buf.readableBytes() > 1024) {
            int discardUntilIndex = buf.indexOf(buf.readerIndex() + 1, buf.writerIndex(), (byte) '(');
            if (discardUntilIndex == -1) {
                buf.clear();
            } else {
                buf.readerIndex(discardUntilIndex);
            }
        }
        return null;
    }

    buf.readerIndex(frameStartIndex);

    return buf.readRetainedSlice(frameEndIndex + 1 - frameStartIndex);
}

From source file:ru.jts.authserver.network.handler.packet.Client2AuthPacketHandler.java

License:Apache License

@Override
public ClientPacket<Client> handlePacket(ByteBuf buf) {
    byte b1 = buf.readByte(); // 1
    short unk1 = buf.readShort(); // 0
    short size = buf.readShort(); // data size

    short sessionId = buf.readShort(); // sessionKey
    byte b2 = buf.readByte(); // 1

    int unk2 = buf.readInt(); // 0
    byte b3 = buf.readByte(); // 8

    byte[] packetData = new byte[buf.readableBytes() - 4];
    short unk3 = buf.readShort(); // 00 02
    buf.readBytes(packetData);/*www  .  j a v a2  s .  c  om*/
    short unk4 = buf.readShort(); // 02 00
    buf.clear();

    ByteBuf packetBuf = Unpooled.copiedBuffer(packetData).order(ByteOrder.LITTLE_ENDIAN);
    packetBuf = decryptBuffer(packetBuf);

    int opcode = packetBuf.readUnsignedByte();

    ClientPacket<Client> packet = null;
    switch (opcode) {
    case 0x01:
        packet = new CM_AUTH_BY_PASS(sessionId);
        break;
    //case 0x02:
    //    packet = new AuthorizeBySession();
    //    break;
    default:
        log.warn("Unknown opcode {}", Integer.toHexString(opcode));
        log.warn(ArrayUtils
                .bytesToHexString(packetBuf.copy(packetBuf.readerIndex(), packetBuf.readableBytes()).array()));
        log.warn(new String(packetBuf.copy(packetBuf.readerIndex(), packetBuf.readableBytes()).array()));
        break;
    }

    if (packet != null) {
        packet.setContent(packetBuf);
    }
    return packet;
}