Example usage for io.netty.buffer ByteBuf getByte

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:TestTCPServer.java

License:Open Source License

public static void main(String... args) throws Throwable {
    IOService service = new IOService();
    TCPAcceptor acceptor = new TCPAcceptor(service);
    acceptor.setOption(ChannelOption.SO_BACKLOG, 3);
    acceptor.setChildOption(ChannelOption.TCP_NODELAY, true);
    acceptor.setChildOption(ChannelOption.SO_KEEPALIVE, true);

    acceptor.bind(4321);//w w w. j a v  a  2  s .c om
    TCPSocket con = acceptor.accept();
    ByteBuf buffer = ByteBufAllocator.DEFAULT.buffer(16 * 1000);
    byte[] bytea = new byte[buffer.capacity()];
    long bytes;

    System.out.println("Connected " + con.remoteEndpoint());
    bytes = con.receive(buffer);
    while (bytes != -1 && buffer.getByte(0) != 4) {
        buffer.readBytes(bytea, 0, (int) bytes);
        System.out.print(new String(bytea, 0, (int) bytes));
        buffer.readerIndex(0).writerIndex(0);
        con.send(buffer, (int) bytes);
        buffer.readerIndex(0).writerIndex(0);
        bytes = con.receive(buffer);
    }

    System.out.println("Connection closed");
    con.close();

    acceptor.close();
    service.cancel();
}

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From source file:alluxio.worker.grpc.AbstractWriteHandlerTest.java

License:Apache License

/**
 * @param buffer buffer to get checksum/*  w w w  . j  a v a 2  s  . co  m*/
 * @return the checksum
 */
public static long getChecksum(ByteBuf buffer) {
    long ret = 0;
    for (int i = 0; i < buffer.capacity(); i++) {
        ret += BufferUtils.byteToInt(buffer.getByte(i));
    }
    return ret;
}

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From source file:cat.tbq.hospital.nio.echoExample.EchoClient2Handler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    ByteBuf byteBuf = (ByteBuf) msg;
    System.out.println(byteBuf.getByte(2));
    ;//  w  ww  . j  av a 2  s. c  om
    ctx.writeAndFlush(msg);
}

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From source file:cat.tbq.hospital.nio.echoExample.EchoClientHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    ByteBuf byteBuf = (ByteBuf) msg;
    int size = byteBuf.readableBytes();
    for (int i = 0; i < size; i++) {
        System.out.println("client===" + (char) byteBuf.getByte(i));
        ;//from w w w  .j  av a  2s .c om
    }
    //        ctx.write(msg);
}

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From source file:cat.tbq.hospital.nio.echoExample.EchoServerHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    ByteBuf byteBuf = (ByteBuf) msg;
    int size = byteBuf.readableBytes();
    for (int i = 0; i < size; i++) {
        System.out.println("===" + (char) byteBuf.getByte(i));
        ;//from w  w w .  j a v a 2  s. co  m
    }
    ByteBuf firstMessage = Unpooled.buffer(20);
    firstMessage.writeBytes("hello how are you".getBytes());
    ctx.writeAndFlush(firstMessage);
}

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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.// www. j a  v  a2  s  .c o  m
 * <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;
}

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From source file:com.addthis.basis.chars.ReadOnlyAsciiBuf.java

License:Apache License

@Override
public String toString() {
    // TODO: if our ByteBuf has a backing array, then we can use the deprecated, ascii-only
    // String constructor : new String(byte[], int, int, int)

    // Can't find a good way around String's stupid always-copy constructor, but by
    // not using content().toString(UTF8), we can at least prevent one extra allocation.
    //// w w  w .  ja v  a 2  s  .com
    // ((CharBuffer alloc, CharBuffer toString, new String) -> (char[] alloc, new String))
    //
    // If desperate, _might_ be able to hack it with a dummy CharacterEncoder if there is
    // no security manager. Otherwise have to class path boot etc to get into the lang
    // package. I suppose annoyances like these are why I made this package.
    ByteBuf slice = content().slice();
    char[] values = new char[slice.capacity()];
    if (slice.readableBytes() > 0) {
        for (int i = 0; i < slice.capacity(); i++) {
            values[i] = (char) slice.getByte(i);
        }
    } else {
        return "";
    }
    return new String(values);
}

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From source file:com.addthis.hydra.data.util.KeyTopper.java

License:Apache License

@Override
public void bytesDecode(byte[] b, long version) {
    map = new HashMap<>();
    errors = null;//from   w w w.  j  a  v a2 s.c o m
    if (b.length == 0) {
        return;
    }
    ByteBuf byteBuf = Unpooled.wrappedBuffer(b);
    try {
        byte marker = byteBuf.getByte(byteBuf.readerIndex());
        if (marker == 0) {
            errors = new HashMap<>();
            // Consume the sentinel byte value
            byteBuf.readByte();
        }
        int mapSize = Varint.readUnsignedVarInt(byteBuf);
        try {
            if (mapSize > 0) {
                for (int i = 0; i < mapSize; i++) {
                    int keyLength = Varint.readUnsignedVarInt(byteBuf);
                    byte[] keybytes = new byte[keyLength];
                    byteBuf.readBytes(keybytes);
                    String k = new String(keybytes, "UTF-8");
                    long value = Varint.readUnsignedVarLong(byteBuf);
                    map.put(k, value);
                    if (hasErrors()) {
                        long error = Varint.readUnsignedVarLong(byteBuf);
                        if (error != 0) {
                            errors.put(k, error);
                        }
                    }
                }
            }
        } catch (Exception e) {
            throw Throwables.propagate(e);
        }
    } finally {
        byteBuf.release();
    }
}

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From source file:com.alibaba.dubbo.qos.server.handler.QosProcessHandler.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (in.readableBytes() < 1) {
        return;/*from w w w  . j  av a  2s.  com*/
    }

    // read one byte to guess protocol
    final int magic = in.getByte(in.readerIndex());

    ChannelPipeline p = ctx.pipeline();
    p.addLast(new LocalHostPermitHandler(acceptForeignIp));
    if (isHttp(magic)) {
        // no welcome output for http protocol
        if (welcomeFuture != null && welcomeFuture.isCancellable()) {
            welcomeFuture.cancel(false);
        }
        p.addLast(new HttpServerCodec());
        p.addLast(new HttpObjectAggregator(1048576));
        p.addLast(new HttpProcessHandler());
        p.remove(this);
    } else {
        p.addLast(new LineBasedFrameDecoder(2048));
        p.addLast(new StringDecoder(CharsetUtil.UTF_8));
        p.addLast(new StringEncoder(CharsetUtil.UTF_8));
        p.addLast(new IdleStateHandler(0, 0, 5 * 60));
        p.addLast(new TelnetProcessHandler());
        p.remove(this);
    }
}

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

License:Apache License

/**
 * Test method for/*from w w  w . j  ava2s.c o m*/
 * {@link ByteToMessageDecoder#extractFrame(ChannelHandlerContext, ByteBuf, int, int)}
 * .
 */
@Test
public void testExtractFrameChannelHandlerContextByteBufIntInt() {
    final ByteBuf buffer = ourAllocator.buffer();

    buffer.writeBytes(new byte[1000]);

    final ChannelHandlerContext mockContext = createMock(ChannelHandlerContext.class);

    replay(mockContext);

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

    final ByteBuf result = decoder.extractFrame(mockContext, buffer, 100, 200);
    assertThat(result, instanceOf(SlicedByteBuf.class));

    assertThat(buffer.getByte(100), is((byte) 0));
    result.setByte(0, 1);
    assertThat(buffer.getByte(100), is((byte) 1));

    verify(mockContext);
}

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