Example usage for io.netty.buffer ByteBuf readableBytes

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

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Introduction

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

Prototype

public abstract int readableBytes();

Source Link

Document

Returns the number of readable bytes which is equal to (this.writerIndex - this.readerIndex) .

Usage

From source file:com.digitalpetri.opcua.stack.server.handlers.UaTcpServerHelloHandler.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) throws Exception {
    buffer = buffer.order(ByteOrder.LITTLE_ENDIAN);

    while (buffer.readableBytes() >= HEADER_LENGTH && buffer.readableBytes() >= getMessageLength(buffer)) {

        int messageLength = getMessageLength(buffer);
        MessageType messageType = MessageType.fromMediumInt(buffer.getMedium(buffer.readerIndex()));

        switch (messageType) {
        case Hello:
            onHello(ctx, buffer.readSlice(messageLength));
            break;

        default:// ww  w.jav  a 2 s.  c o  m
            throw new UaException(StatusCodes.Bad_TcpMessageTypeInvalid,
                    "unexpected MessageType: " + messageType);
        }
    }
}

From source file:com.digitalpetri.opcua.stack.server.handlers.UaTcpServerSymmetricHandler.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) throws Exception {
    buffer = buffer.order(ByteOrder.LITTLE_ENDIAN);

    while (buffer.readableBytes() >= HEADER_LENGTH && buffer.readableBytes() >= getMessageLength(buffer)) {

        int messageLength = getMessageLength(buffer);
        MessageType messageType = MessageType.fromMediumInt(buffer.getMedium(buffer.readerIndex()));

        switch (messageType) {
        case SecureMessage:
            onSecureMessage(ctx, buffer.readSlice(messageLength), out);
            break;

        default://from w ww .ja  v a 2  s. c o  m
            out.add(buffer.readSlice(messageLength).retain());
        }
    }
}

From source file:com.dingwang.netty.decoder.PersonDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {

    if (in == null || in.readableBytes() <= 0) {
        System.out.println("##################");
        return;//from w w  w .  j  av  a  2  s .  c o m
    }
    byte[] src = new byte[in.readableBytes()];

    in.readBytes(src);

    String message = new String(src, "UTF-8");

    Person p = new Gson().fromJson(message, Person.class);

    System.out.println("message======" + message);

    out.add(p);
}

From source file:com.dingwang.netty.decoder.TimeDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {

    System.out.println("==========decode");

    if (in.readableBytes() < 4) {
        return;//from   w w  w  . java  2  s.c om
    }

    out.add(new UnixTime(in.readInt()));
}

From source file:com.dingwang.rpc.decode.RpcDecoder.java

License:Open Source License

@Override
public final void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (in.readableBytes() < 4) {
        return;//from  ww  w.  ja v  a2  s  .co m
    }
    in.markReaderIndex();
    int dataLength = in.readInt();
    if (dataLength < 0) {
        ctx.close();
    }
    if (in.readableBytes() < dataLength) {
        in.resetReaderIndex();
    }
    byte[] data = new byte[dataLength];
    in.readBytes(data);

    Object obj = SerializationUtil.deserialize(data, genericClass);
    out.add(obj);
}

From source file:com.dinstone.jrpc.transport.netty4.TransportProtocolDecoder.java

License:Apache License

private byte[] readFrame(ByteBuf in) {
    if (in.readableBytes() > 4) {
        in.markReaderIndex();//from www  .j av  a2  s .co m
        int len = in.readInt();
        if (len > maxObjectSize) {
            throw new IllegalStateException(
                    "The encoded object is too big: " + len + " (> " + maxObjectSize + ")");
        } else if (len < 1) {
            throw new IllegalStateException("The encoded object is too small: " + len + " (< 1)");
        }

        if (in.readableBytes() < len) {
            in.resetReaderIndex();
            return null;
        }

        byte[] rpcBytes = new byte[len];
        in.readBytes(rpcBytes);
        return rpcBytes;
    }

    return null;
}

From source file:com.dinstone.rpc.netty.RpcProtocolDecoder.java

License:Apache License

private byte[] readFrame(ByteBuf in) {
    int remaining = in.readableBytes();
    if (remaining < 4) {
        return null;
    }/*from   w  w  w  . java 2  s. com*/

    int objectSize = in.getInt(0);
    if (objectSize > maxObjectSize) {
        throw new IllegalArgumentException(
                "The encoded object is too big: " + objectSize + " (> " + maxObjectSize + ')');
    }

    if (remaining - 4 >= objectSize) {
        objectSize = in.readInt();
        // RPC object size
        byte[] rpcBytes = new byte[objectSize];
        in.readBytes(rpcBytes);
        return rpcBytes;
    }
    return null;
}

From source file:com.doctor.netty5.example.factorial_algorithm.BigIntegerDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    // ? ?F +  +  -> 1 + 4 + ??
    // ??//* w w w.ja v  a  2  s. c om*/
    if (in.readableBytes() < 5) {
        return; // F + 
    }

    in.markReaderIndex();
    short magicNumber = in.readUnsignedByte();// ?F
    if (magicNumber != 'F') {
        in.resetReaderIndex();
        throw new RuntimeException("magicNumber must be 'F' ");
    }

    // ???
    int dataLength = in.readInt();

    if (in.readableBytes() < dataLength) {
        in.resetReaderIndex();
        return;
    }

    byte[] data = new byte[dataLength];
    in.readBytes(data);
    out.add(new BigInteger(data));
}

From source file:com.dwarf.netty.guide.factorial.BigIntegerDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
    // Wait until the length prefix is available.
    if (in.readableBytes() < 5) {
        return;/*from   w ww  .ja v a 2 s .  c  om*/
    }

    in.markReaderIndex();

    // Check the magic number.
    int magicNumber = in.readUnsignedByte();
    if (magicNumber != 'F') {
        in.resetReaderIndex();
        throw new CorruptedFrameException("Invalid magic number: " + magicNumber);
    }

    // Wait until the whole data is available.
    int dataLength = in.readInt();
    if (in.readableBytes() < dataLength) {
        in.resetReaderIndex();
        return;
    }

    // Convert the received data into a new BigInteger.
    byte[] decoded = new byte[dataLength];
    in.readBytes(decoded);

    out.add(new BigInteger(decoded));
}

From source file:com.ebay.jetstream.http.netty.client.HttpClient.java

License:MIT License

public void post(URI uri, Object content, Map<String, String> headers, ResponseFuture responsefuture)
        throws Exception {

    if (m_shutDown.get()) {
        throw new IOException("IO has been Shutdown = ");

    }/*  w w w  .  ja v a 2 s. c o m*/

    if (uri == null)
        throw new NullPointerException("uri is null or incorrect");

    if (!m_started.get()) {
        synchronized (this) {
            if (!m_started.get()) {
                start();
                m_started.set(true);
            }
        }
    }

    ByteBuf byteBuf = Unpooled.buffer(m_config.getInitialRequestBufferSize());
    ByteBufOutputStream outputStream = new ByteBufOutputStream(byteBuf);

    // transform to json
    try {
        m_mapper.writeValue(outputStream, content);
    } catch (JsonGenerationException e) {
        throw e;
    } catch (JsonMappingException e) {
        throw e;
    } catch (IOException e) {
        throw e;
    } finally {
        outputStream.close();
    }

    EmbeddedChannel encoder;
    String contenteEncoding;
    if ("gzip".equals(m_config.getCompressEncoder())) {
        encoder = new EmbeddedChannel(ZlibCodecFactory.newZlibEncoder(ZlibWrapper.GZIP, 1));
        contenteEncoding = "gzip";

    } else if ("deflate".equals(m_config.getCompressEncoder())) {
        encoder = new EmbeddedChannel(ZlibCodecFactory.newZlibEncoder(ZlibWrapper.ZLIB, 1));
        contenteEncoding = "deflate";
    } else {
        encoder = null;
        contenteEncoding = null;
    }

    if (encoder != null) {
        encoder.config().setAllocator(UnpooledByteBufAllocator.DEFAULT);
        encoder.writeOutbound(byteBuf);
        encoder.finish();
        byteBuf = (ByteBuf) encoder.readOutbound();
        encoder.close();
    }

    DefaultFullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            uri.toString(), byteBuf);
    if (contenteEncoding != null) {
        HttpHeaders.setHeader(request, HttpHeaders.Names.CONTENT_ENCODING, contenteEncoding);
    }
    HttpHeaders.setHeader(request, HttpHeaders.Names.ACCEPT_ENCODING, "gzip, deflate");
    HttpHeaders.setHeader(request, HttpHeaders.Names.CONTENT_TYPE, "application/json");
    HttpHeaders.setContentLength(request, byteBuf.readableBytes());

    if (isKeepAlive())
        HttpHeaders.setHeader(request, HttpHeaders.Names.CONNECTION, "keep-alive");

    if (headers != null) {
        @SuppressWarnings("rawtypes")
        Iterator it = headers.entrySet().iterator();
        while (it.hasNext()) {
            @SuppressWarnings("rawtypes")
            Map.Entry pairs = (Map.Entry) it.next();
            HttpHeaders.setHeader(request, (String) pairs.getKey(), pairs.getValue());
        }
    }

    if (responsefuture != null) {
        RequestId reqid = RequestId.newRequestId();

        m_responseDispatcher.add(reqid, responsefuture);

        HttpHeaders.setHeader(request, "X_EBAY_REQ_ID", reqid.toString());
        // we expect this to be echoed in the response used for correlation.
    }

    if (m_dataQueue.size() < m_workQueueCapacity) {
        ProcessHttpWorkRequest workRequest = new ProcessHttpWorkRequest(this, uri, request);

        if (!m_dataQueue.offer(workRequest)) {
            if (responsefuture != null) {
                responsefuture.setFailure();
                m_responseDispatcher.remove(request.headers().get("X_EBAY_REQ_ID"));
            }
        }
    } else {
        throw new IOException("downstream Queue is full ");
    }

}