Example usage for io.netty.buffer ByteBuf getByte

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

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Introduction

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

Prototype

public abstract byte getByte(int index);

Source Link

Document

Gets a byte at the specified absolute index in this buffer.

Usage

From source file:net.smert.frameworkgl.examples.networklinerepeater.LineRepeaterServerHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    ByteBuf buf = (ByteBuf) msg;
    int totalBytes = buf.readableBytes();
    if (totalBytes > 2) {
        byte last = buf.getByte(totalBytes - 1);
        byte nextToLast = buf.getByte(totalBytes - 2);
        if ((nextToLast == 13) && (last == 10)) {
            ctx.write(msg);/*ww w .  ja v a2 s  .  co  m*/
        }
    }
}

From source file:netty.syslog.DecoderUtil.java

License:Open Source License

static byte peek(ByteBuf buffer) {
    return buffer.getByte(buffer.readerIndex());
}

From source file:netty.syslog.DecoderUtil.java

License:Open Source License

static String readStringToSpace(ByteBuf buffer, boolean checkNull) {
    if (checkNull && peek(buffer) == '-') {
        buffer.readByte();/*from   w w  w  . jav a2 s.  c  o m*/
        return null;
    }
    int length = -1;
    for (int i = buffer.readerIndex(); i < buffer.capacity(); i++) {
        if (buffer.getByte(i) == ' ') {
            length = i - buffer.readerIndex();
            break;
        }
    }
    if (length < 0) {
        length = buffer.readableBytes();
    }
    final String s = buffer.toString(buffer.readerIndex(), length, CharsetUtil.UTF_8);
    buffer.skipBytes(length);
    return s;
}

From source file:nl.thijsalders.spigotproxy.haproxy.HAProxyMessageDecoder.java

License:Apache License

/**
 * Returns the proxy protocol specification version in the buffer if the version is found.
 * Returns -1 if no version was found in the buffer.
 *//*from   ww w  .  j  ava2 s.  c om*/
private static int findVersion(final ByteBuf buffer) {
    final int n = buffer.readableBytes();
    // per spec, the version number is found in the 13th byte
    if (n < 13) {
        return -1;
    }

    int idx = buffer.readerIndex();
    return match(BINARY_PREFIX, buffer, idx) ? buffer.getByte(idx + BINARY_PREFIX_LENGTH) : 1;
}

From source file:nl.thijsalders.spigotproxy.haproxy.HAProxyMessageDecoder.java

License:Apache License

/**
 * Returns the index in the buffer of the end of line found.
 * Returns -1 if no end of line was found in the buffer.
 *//*  www . ja  v a  2s.  co m*/
private static int findEndOfLine(final ByteBuf buffer) {
    final int n = buffer.writerIndex();
    for (int i = buffer.readerIndex(); i < n; i++) {
        final byte b = buffer.getByte(i);
        if (b == '\r' && i < n - 1 && buffer.getByte(i + 1) == '\n') {
            return i; // \r\n
        }
    }
    return -1; // Not found.
}

From source file:nl.thijsalders.spigotproxy.haproxy.HAProxyMessageDecoder.java

License:Apache License

/**
 * Create a frame out of the {@link ByteBuf} and return it.
 * Based on code from {@link LineBasedFrameDecoder#decode(ChannelHandlerContext, ByteBuf)}.
 *
 * @param ctx     the {@link ChannelHandlerContext} which this {@link HAProxyMessageDecoder} belongs to
 * @param buffer  the {@link ByteBuf} from which to read data
 * @return frame  the {@link ByteBuf} which represent the frame or {@code null} if no frame could
 *                be created//from  w  ww .  ja  v a 2 s  .  c  o m
 */
private ByteBuf decodeLine(ChannelHandlerContext ctx, ByteBuf buffer) throws Exception {
    final int eol = findEndOfLine(buffer);
    if (!discarding) {
        if (eol >= 0) {
            final int length = eol - buffer.readerIndex();
            if (length > V1_MAX_LENGTH) {
                buffer.readerIndex(eol + DELIMITER_LENGTH);
                failOverLimit(ctx, length);
                return null;
            }
            ByteBuf frame = buffer.readSlice(length);
            buffer.skipBytes(DELIMITER_LENGTH);
            return frame;
        } else {
            final int length = buffer.readableBytes();
            if (length > V1_MAX_LENGTH) {
                discardedBytes = length;
                buffer.skipBytes(length);
                discarding = true;
                failOverLimit(ctx, "over " + discardedBytes);
            }
            return null;
        }
    } else {
        if (eol >= 0) {
            final int delimLength = buffer.getByte(eol) == '\r' ? 2 : 1;
            buffer.readerIndex(eol + delimLength);
            discardedBytes = 0;
            discarding = false;
        } else {
            discardedBytes = buffer.readableBytes();
            buffer.skipBytes(discardedBytes);
        }
        return null;
    }
}

From source file:nl.thijsalders.spigotproxy.haproxy.HAProxyMessageDecoder.java

License:Apache License

private static boolean match(byte[] prefix, ByteBuf buffer, int idx) {
    for (int i = 0; i < prefix.length; i++) {
        final byte b = buffer.getByte(idx + i);
        if (b != prefix[i]) {
            return false;
        }/*from w w  w. j a v a2s. co  m*/
    }
    return true;
}

From source file:org.apache.activemq.artemis.protocol.amqp.proton.handler.ProtonHandler.java

License:Apache License

public void inputBuffer(ByteBuf buffer) {
    dataReceived = true;/*  www  .j a v  a2 s . com*/
    lock.lock();
    try {
        while (buffer.readableBytes() > 0) {
            int capacity = transport.capacity();

            if (!receivedFirstPacket) {
                try {
                    byte auth = buffer.getByte(4);
                    if (auth == SASL || auth == BARE) {
                        if (isServer) {
                            dispatchAuth(auth == SASL);
                        } else if (auth == BARE && clientSASLMechanism == null) {
                            dispatchAuthSuccess();
                        }
                        /*
                        * there is a chance that if SASL Handshake has been carried out that the capacity may change.
                        * */
                        capacity = transport.capacity();
                    }
                } catch (Throwable e) {
                    log.warn(e.getMessage(), e);
                }

                receivedFirstPacket = true;
            }

            if (capacity > 0) {
                ByteBuffer tail = transport.tail();
                int min = Math.min(capacity, buffer.readableBytes());
                tail.limit(min);
                buffer.readBytes(tail);

                flush();
            } else {
                if (capacity == 0) {
                    log.debugf("abandoning: readableBytes=%d", buffer.readableBytes());
                } else {
                    log.debugf("transport closed, discarding: readableBytes=%d, capacity=%d",
                            buffer.readableBytes(), transport.capacity());
                }
                break;
            }
        }
    } finally {
        lock.unlock();
    }
}

From source file:org.apache.activemq.artemis.tests.integration.transports.netty.ActiveMQFrameDecoder2Test.java

License:Apache License

@Test
public void testExtremeFragmentation() throws Exception {
    final EmbeddedChannel decoder = new EmbeddedChannel(new ActiveMQFrameDecoder2());

    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 0 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 0 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 0 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 4 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 5 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 6 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 7 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 8 }));

    ByteBuf frame = (ByteBuf) decoder.readInbound();
    Assert.assertEquals(4, frame.readerIndex());
    Assert.assertEquals(4, frame.readableBytes());
    Assert.assertEquals(5, frame.getByte(4));
    Assert.assertEquals(6, frame.getByte(5));
    Assert.assertEquals(7, frame.getByte(6));
    Assert.assertEquals(8, frame.getByte(7));
    frame.release();//from ww w.ja v a2 s  . co m
}

From source file:org.apache.activemq.artemis.utils.AbstractByteBufPool.java

License:Apache License

private static int byteBufHashCode(final ByteBuf byteBuf, final int offset, final int length) {
    final int intCount = length >>> 1;
    final int byteCount = length & 1;
    int hashCode = 1;
    int arrayIndex = offset;
    for (int i = 0; i < intCount; i++) {
        final short shortLE = byteBuf.getShortLE(arrayIndex);
        final short nativeShort = PlatformDependent.BIG_ENDIAN_NATIVE_ORDER ? Short.reverseBytes(shortLE)
                : shortLE;//  w  ww.  j  a v a 2  s.  com
        hashCode = 31 * hashCode + nativeShort;
        arrayIndex += 2;
    }
    for (int i = 0; i < byteCount; i++) {
        hashCode = 31 * hashCode + byteBuf.getByte(arrayIndex++);
    }
    return hashCode;
}