Example usage for io.netty.buffer ByteBuf capacity

Introduction

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

Prototype

public abstract ByteBuf capacity(int newCapacity);

Source Link

Document

Adjusts the capacity of this buffer.

Usage

From source file:dorkbox.network.pipeline.ByteBufOutput.java

License:Apache License

/** Writes a string that is known to contain only ASCII characters. Non-ASCII strings passed to this method will be corrupted.
 * Each byte is a 7 bit character with the remaining byte denoting if another character is available. This is slightly more
 * efficient than {@link #writeString(String)}. The string can be read using {@link ByteBufInput#readString()} or
 * {@link ByteBufInput#readStringBuilder()}.
 * @param value May be null. *//*from  w  ww.  j  a  v a  2 s  .  c o m*/
@Override
public void writeAscii(String value) throws KryoException {
    if (value == null) {
        writeByte(0x80); // 0 means null, bit 8 means UTF8.
        return;
    }
    int charCount = value.length();
    if (charCount == 0) {
        writeByte(1 | 0x80); // 1 means empty string, bit 8 means UTF8.
        return;
    }

    ByteBuf buffer = byteBuf;
    if (buffer.writableBytes() < charCount) {
        buffer.capacity(buffer.capacity() + charCount + 1);
    }

    int charIndex = 0;
    // Try to write 8 bit chars.
    for (; charIndex < charCount; charIndex++) {
        int c = value.charAt(charIndex);
        buffer.writeByte((byte) c);
    }
    // specify it's ASCII
    int i = buffer.writerIndex() - 1;
    buffer.setByte(i, buffer.getByte(i) | 0x80); // Bit 8 means end of ASCII.
}

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From source file:impl.underdark.transport.bluetooth.BtLink.java

License:Open Source License

private void inputLoop() {
    // Input I/O thread.

    sendHelloFrame();/*from  www  . ja v  a2 s  .  c  o  m*/

    int bufferSize = 4096;
    ByteBuf inputData = Unpooled.buffer(bufferSize);
    inputData.order(ByteOrder.BIG_ENDIAN);

    try {
        int len;
        while (true) {
            inputData.ensureWritable(bufferSize, true);
            len = inputStream.read(inputData.array(), inputData.writerIndex(), bufferSize);
            if (len <= 0)
                break;

            inputData.writerIndex(inputData.writerIndex() + len);

            if (!formFrames(inputData))
                break;

            inputData.discardReadBytes();
            inputData.capacity(inputData.writerIndex() + bufferSize);
        } // while
    } catch (InterruptedIOException ex) {
        Logger.warn("bt input timeout: {}", ex);
        try {
            inputStream.close();
        } catch (IOException ioex) {
        }

        notifyDisconnect();
        return;
    } catch (Exception ex) {
        Logger.warn("bt input read failed.", ex);
        try {
            inputStream.close();
        } catch (IOException ioex) {
        }

        notifyDisconnect();
        return;
    }

    Logger.debug("bt input read end.");
    notifyDisconnect();

}

---

From source file:impl.underdark.transport.nsd.NsdLink.java

License:Open Source License

private void inputLoop() {
    // Input thread.
    final int bufferSize = 4096;
    ByteBuf inputData = Unpooled.buffer(bufferSize);
    inputData.order(ByteOrder.BIG_ENDIAN);

    try {//from  ww  w  .j  a va  2  s  .c  om
        int len;
        while (true) {
            inputData.ensureWritable(bufferSize, true);
            len = inputStream.read(inputData.array(), inputData.writerIndex(), bufferSize);
            if (len <= 0)
                break;

            inputData.writerIndex(inputData.writerIndex() + len);

            if (!formFrames(inputData))
                break;

            inputData.discardReadBytes();
            inputData.capacity(inputData.writerIndex() + bufferSize);
        } // while
    } catch (InterruptedIOException ex) {
        Logger.warn("nsd input timeout: {}", ex);
        try {
            inputStream.close();
        } catch (IOException ioex) {
        }

        notifyDisconnect();
        return;
    } catch (Exception ex) {
        Logger.warn("nsd input read failed: {}", ex);
        try {
            inputStream.close();
        } catch (IOException ioex) {
        }

        notifyDisconnect();
        return;
    }

    Logger.debug("nsd input read end");
    notifyDisconnect();
}

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From source file:io.horizondb.client.MsgToByteEncoder.java

License:Apache License

/**
 * {@inheritDoc}/*w w  w  .j a va  2 s.  c om*/
 */
@Override
protected void encode(ChannelHandlerContext ctx, Msg<?> msg, ByteBuf out) throws Exception {

    out.writerIndex(Buffers.wrap(out.capacity(msg.computeSerializedSize())).order(ByteOrder.LITTLE_ENDIAN)
            .writeObject(msg).writerIndex());
}

---

From source file:org.pumpkindb.Closure.java

License:Mozilla Public License

@Override
public void encode(ByteBuf buffer) {
    ByteBuf buf = Unpooled.buffer();
    encodables.forEach(encodable -> encodable.encode(buf));

    int index = buf.writerIndex();

    buf.capacity(index);

    new Data(buf.array()).encode(buffer);
}

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