Example usage for io.netty.buffer Unpooled buffer

Introduction

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

Prototype

public static ByteBuf buffer(int initialCapacity)

Source Link

Document

Creates a new big-endian Java heap buffer with the specified capacity , which expands its capacity boundlessly on demand.

Usage

From source file:com.github.sylvek.wsmqttfwd.decoder.PublishDecoder.java

License:Open Source License

@Override
public PublishMessage decode(AttributeMap ctx, ByteBuf in) throws Exception {
    LOG.debug("decode invoked with buffer {}", in);
    in.resetReaderIndex();/*from  ww  w  . j  a v  a 2s  .  c  om*/
    int startPos = in.readerIndex();

    //Common decoding part
    PublishMessage message = new PublishMessage();
    if (!decodeCommonHeader(message, in)) {
        LOG.debug("decode ask for more data after {}", in);
        in.resetReaderIndex();
        return null;
    }

    int remainingLength = message.getRemainingLength();

    //Topic name
    String topic = Utils.decodeString(in);
    if (topic == null) {
        in.resetReaderIndex();
        return null;
    }
    //[MQTT-3.3.2-2] The Topic Name in the PUBLISH Packet MUST NOT contain wildcard characters.
    if (topic.contains("+") || topic.contains("#")) {
        throw new CorruptedFrameException(
                "Received a PUBLISH with topic containing wild card chars, topic: " + topic);
    }
    //check topic is at least one char [MQTT-4.7.3-1]
    if (topic.length() == 0) {
        throw new CorruptedFrameException("Received a PUBLISH with topic without any character");
    }

    message.setTopicName(topic);

    if (message.getQos() == AbstractMessage.QOSType.LEAST_ONE
            || message.getQos() == AbstractMessage.QOSType.EXACTLY_ONCE) {
        message.setMessageID(in.readUnsignedShort());
    }
    int stopPos = in.readerIndex();

    //read the payload
    int payloadSize = remainingLength - (stopPos - startPos - 2)
            + (Utils.numBytesToEncode(remainingLength) - 1);
    if (in.readableBytes() < payloadSize) {
        in.resetReaderIndex();
        return null;
    }
    ByteBuf bb = Unpooled.buffer(payloadSize);
    in.readBytes(bb);
    message.setPayload(bb.nioBuffer());

    return message;
}

From source file:com.gxkj.demo.netty.echo.EchoClientHandler.java

License:Apache License

/**
 * Creates a client-side handler./*from  w w w  .  ja  va 2  s .c  o m*/
 */
public EchoClientHandler(int firstMessageSize) {
    if (firstMessageSize <= 0) {
        throw new IllegalArgumentException("firstMessageSize: " + firstMessageSize);
    }
    /**
     * ?
     */
    firstMessage = Unpooled.buffer(firstMessageSize);
    for (int i = 0; i < firstMessage.capacity(); i++) {
        firstMessage.writeByte((byte) i);
    }
}

From source file:com.hop.hhxx.example.echo.EchoClientHandler.java

License:Apache License

/**
 * Creates a client-side handler.//from  w ww .j a v  a  2  s . c  o  m
 */
public EchoClientHandler() {
    firstMessage = Unpooled.buffer(io.netty.example.echo.EchoClient.SIZE);
    for (int i = 0; i < firstMessage.capacity(); i++) {
        firstMessage.writeByte((byte) i);
    }
}

From source file:com.hop.hhxx.example.sctp.SctpEchoClientHandler.java

License:Apache License

/**
 * Creates a client-side handler.//from  w w w.  j av  a  2  s .com
 */
public SctpEchoClientHandler() {
    firstMessage = Unpooled.buffer(io.netty.example.sctp.SctpEchoClient.SIZE);
    for (int i = 0; i < firstMessage.capacity(); i++) {
        firstMessage.writeByte((byte) i);
    }
}

From source file:com.hop.hhxx.example.udt.echo.bytes.ByteEchoClientHandler.java

License:Apache License

public ByteEchoClientHandler() {
    super(false);

    message = Unpooled.buffer(io.netty.example.udt.echo.bytes.ByteEchoClient.SIZE);
    for (int i = 0; i < message.capacity(); i++) {
        message.writeByte((byte) i);
    }/*ww w.  j  a  v  a2 s  .  co m*/
}

From source file:com.hop.hhxx.example.udt.echo.message.MsgEchoClientHandler.java

License:Apache License

public MsgEchoClientHandler() {
    super(false);
    final ByteBuf byteBuf = Unpooled.buffer(io.netty.example.udt.echo.message.MsgEchoClient.SIZE);
    for (int i = 0; i < byteBuf.capacity(); i++) {
        byteBuf.writeByte((byte) i);
    }/*from www. j  av  a2 s.c  o m*/
    message = new UdtMessage(byteBuf);
}

From source file:com.hxr.javatone.concurrency.netty.official.echo.EchoClientHandler.java

License:Apache License

/**
 * Creates a client-side handler./*  w w  w.j ava2  s.com*/
 */
public EchoClientHandler(final int firstMessageSize) {
    if (firstMessageSize <= 0) {
        throw new IllegalArgumentException("firstMessageSize: " + firstMessageSize);
    }
    firstMessage = Unpooled.buffer(firstMessageSize);
    for (int i = 0; i < firstMessage.capacity(); i++) {
        firstMessage.writeByte((byte) i);
    }
}

From source file:com.lambdaworks.redis.codec.StringCodecTest.java

License:Apache License

@Test
public void encodeUtf8Buf() throws Exception {

    StringCodec codec = new StringCodec(LettuceCharsets.UTF8);

    ByteBuf buffer = Unpooled.buffer(1234);
    codec.encode(teststring, buffer);//from   w ww  .  jav  a 2  s  .c  o  m

    assertThat(buffer.toString(StandardCharsets.UTF_8)).isEqualTo(teststring);
}

From source file:com.lambdaworks.redis.codec.StringCodecTest.java

License:Apache License

@Test
public void encodeAsciiBuf() throws Exception {

    StringCodec codec = new StringCodec(LettuceCharsets.ASCII);

    ByteBuf buffer = Unpooled.buffer(1234);
    codec.encode(teststringPlain, buffer);

    assertThat(buffer.toString(LettuceCharsets.ASCII)).isEqualTo(teststringPlain);
}

From source file:com.lambdaworks.redis.codec.StringCodecTest.java

License:Apache License

@Test
public void encodeIso88591Buf() throws Exception {

    StringCodec codec = new StringCodec(StandardCharsets.ISO_8859_1);

    ByteBuf buffer = Unpooled.buffer(1234);
    codec.encodeValue(teststringPlain, buffer);

    assertThat(buffer.toString(StandardCharsets.ISO_8859_1)).isEqualTo(teststringPlain);
}