Example usage for io.netty.buffer ByteBuf ensureWritable

Introduction

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

Prototype

public abstract int ensureWritable(int minWritableBytes, boolean force);

Source Link

Document

Expands the buffer #capacity() to make sure the number of #writableBytes() writable bytes is equal to or greater than the specified value.

Usage

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

License:Open Source License

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

    sendHelloFrame();/*  w  w w.j  a  v  a  2  s  .  co  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();

}

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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  w  w  w  .  j  a va 2s  . c o m*/
        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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