Example usage for io.netty.buffer ByteBuf resetReaderIndex

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

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Introduction

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

Prototype

public abstract ByteBuf resetReaderIndex();

Source Link

Document

Repositions the current readerIndex to the marked readerIndex in this buffer.

Usage

From source file:com.mastfrog.acteur.server.EventImpl.java

License:Open Source License

@Override
public <T> T getContentAsJSON(Class<T> type) throws IOException {
    // Special handling for strings
    if (type == String.class || type == CharSequence.class) {
        String result = Streams.readString(new ByteBufInputStream(getContent()));
        if (result.length() > 0 && result.charAt(0) == '"') {
            result = result.substring(1);
        }/*w  w w.j  a  v  a  2 s  . c o  m*/
        if (result.length() > 1 && result.charAt(result.length() - 1) == '"') {
            result = result.substring(0, result.length() - 2);
        }
        return (T) result;
    }
    ByteBuf content = getContent();
    try {
        return codec.readValue(new ByteBufInputStream(content), type);
    } finally {
        content.resetReaderIndex();
    }
}

From source file:com.mastfrog.netty.http.client.ResponseHandler.java

License:Open Source License

protected void internalReceive(HttpResponseStatus status, HttpHeaders headers, ByteBuf content) {
    try {//from w ww.j a  v a2  s.c  o m
        if (status.code() > 399) {
            byte[] b = new byte[content.readableBytes()];
            content.readBytes(b);
            onErrorResponse(status, headers, new String(b, CharsetUtil.UTF_8));
            return;
        }
        if (type == ByteBuf.class) {
            _doReceive(status, headers, type.cast(content));
        } else if (type == String.class || type == CharSequence.class) {
            byte[] b = new byte[content.readableBytes()];
            content.readBytes(b);
            _doReceive(status, headers, type.cast(new String(b, CharsetUtil.UTF_8)));
        } else if (type == byte[].class) {
            byte[] b = new byte[content.readableBytes()];
            content.readBytes(b);
            _doReceive(status, headers, type.cast(b));
        } else {
            byte[] b = new byte[content.readableBytes()];
            content.readBytes(b);
            try {
                Object o = mapper.readValue(b, type);
                _doReceive(status, headers, type.cast(o));
            } catch (JsonParseException ex) {
                content.resetReaderIndex();
                try {
                    String s = Streams.readString(new ByteBufInputStream(content), "UTF-8");
                    onErrorResponse(HttpResponseStatus.REQUESTED_RANGE_NOT_SATISFIABLE, headers, s);
                } catch (IOException ex1) {
                    Exceptions.chuck(ex1);
                }
            } catch (Exception ex) {
                Exceptions.chuck(ex);
            }
        }
    } finally {
        latch.countDown();
    }
}

From source file:com.mastfrog.scamper.codec.RawMessageCodec.java

License:Open Source License

@Override
public MessageTypeAndBuffer decode(ByteBuf buf, ChannelHandlerContext ctx, int sctpChannel) {
    byte first = buf.readByte();
    if (first == magicNumber()) {
        MessageType messageType = messageTypes.forByteBuf(buf);
        return new MessageTypeAndBuffer(messageType, buf, sctpChannel);
    }/*from w w w. jav  a 2  s. c  o  m*/
    return new MessageTypeAndBuffer(MessageType.createUnknown(-1, -1), buf.resetReaderIndex(), sctpChannel);
}

From source file:com.mastfrog.scamper.compression.CompressingCodec.java

License:Open Source License

@Override
public MessageTypeAndBuffer decode(ByteBuf buf, ChannelHandlerContext ctx, int sctpChannel) {
    byte magic = buf.readByte();
    if (magic == magicNumber()) {
        try {/*from   w w w. j  a  v  a  2  s  . c  om*/
            return decodeImpl(buf, ctx, sctpChannel);
        } catch (Exception ex) {
            return Exceptions.chuck(ex);
        }
    } else {
        buf.resetReaderIndex();
        return raw.decode(buf, ctx, sctpChannel);
    }
}

From source file:com.mastfrog.scamper.MessageTypeRegistry.java

License:Open Source License

/**
 * Decode a message type from the <i>current position</i> of the
 * passed ByteBuf./*from   w w  w . j a  v  a 2  s .  c  om*/
 * @param buf
 * @return 
 */
public MessageType forByteBuf(ByteBuf buf) {
    if (buf.readableBytes() >= 2) {
        byte one = buf.readByte();
        byte two = buf.readByte();
        for (MessageType mt : types) {
            if (mt.match(one, two)) {
                buf.discardReadBytes();
                return mt;
            }
        }
        return MessageType.createUnknown(one, two);
    }
    buf.resetReaderIndex();
    return MessageType.createUnknown((byte) 0, (byte) 0);
}

From source file:com.mastfrog.scamper.password.crypto.EncryptingCodecTest.java

License:Open Source License

@Test
public void test(MessageCodec codec, MessageTypeRegistry reg) throws Throwable {
    for (int i = 0; i < 10; i++) {
        byte[] add = new byte[i + 1];
        Arrays.fill(add, (byte) 'a');
        String testData = "ABCD 123 Hello world I have some trees in my elbow and you are blue"
                + new String(add);
        ByteBuf toEncode = bufFor(testData);
        assertEquals(testData, dataFrom(toEncode));
        ByteBuf encoded = codec.encode(TYPE, toEncode, fakeChannel());
        String enc = dataFrom(encoded);
        encoded.resetReaderIndex();
        System.out.println("ENCODED TO " + enc + " bytes " + enc.length());
        assertEquals(0, encoded.readerIndex());

        MessageTypeAndBuffer result = codec.decode(encoded, fakeChannelContext(), 0);
        assertEquals(TYPE, result.messageType);
        assertEquals(testData, dataFrom(result.buf));
    }/*from  w w  w.j a v  a  2s  .  co  m*/
}

From source file:com.mobius.software.android.iotbroker.mqtt.net.MQDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> out) throws Exception {
    ByteBuf nextHeader = null;/* w w w .j  a va2s . co  m*/
    do {
        if (buf.readableBytes() > 1)
            nextHeader = MQParser.next(buf);

        if (nextHeader != null) {
            buf.readBytes(nextHeader, nextHeader.capacity());
            try {
                MQMessage header = MQParser.decode(nextHeader);
                out.add(header);
            } catch (Exception e) {
                buf.resetReaderIndex();
                ctx.channel().pipeline().remove(this);
                throw e;
            } finally {
                nextHeader.release();
            }
        }
    } while (buf.readableBytes() > 1 && nextHeader != null);
}

From source file:com.mobius.software.android.iotbroker.mqtt.parser.MQParser.java

License:Open Source License

public static ByteBuf next(ByteBuf buf) throws MalformedMessageException {
    buf.markReaderIndex();/*  w  w  w. ja v a 2s  .  c  om*/
    MessageType type = MessageType.valueOf(((buf.readByte() >> 4) & 0xf));

    switch (type) {
    case PINGREQ:
    case PINGRESP:
    case DISCONNECT:
        buf.resetReaderIndex();
        return Unpooled.buffer(2);
    default:
        LengthDetails length = decodeLength(buf);
        buf.resetReaderIndex();
        if (length.getLength() == 0)
            return null;
        int result = length.getLength() + length.getSize() + 1;
        return result <= buf.readableBytes() ? Unpooled.buffer(result) : null;
    }
}

From source file:com.mobius.software.mqtt.parser.MQParser.java

License:Open Source License

public static ByteBuf next(ByteBuf buf, int maxMessageSize) throws MalformedMessageException {
    buf.markReaderIndex();/*from  w  w w . ja  v  a  2s.  c om*/
    MessageType type = MessageType.valueOf(((buf.readByte() >> 4) & 0xf));

    if (type == null) {
        buf.resetReaderIndex();
        throw new MalformedMessageException("invalid message type decoding");
    }

    switch (type) {
    case PINGREQ:
    case PINGRESP:
    case DISCONNECT:
        buf.resetReaderIndex();
        return Unpooled.buffer(2);
    default:
        LengthDetails length = LengthDetails.decode(buf);
        buf.resetReaderIndex();
        if (length.getLength() == 0)
            return null;
        int result = length.getLength() + length.getSize() + 1;
        if (result > buf.readableBytes())
            throw new MalformedMessageException("invalid length decoding for " + type + " result length:"
                    + result + ", in buffer:" + buf.readableBytes());
        if (result > maxMessageSize)
            throw new MalformedMessageException("message length exceeds limit " + maxMessageSize);
        return Unpooled.buffer(result);
    }
}

From source file:com.mobius.software.mqtt.performance.controller.net.Decoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> out) {
    ByteBuf nextHeader = null;/*from w w  w . j  a v  a  2s.c  om*/
    do {
        if (buf.readableBytes() > 1) {
            try {
                nextHeader = MQParser.next(buf);
            } catch (MalformedMessageException | IndexOutOfBoundsException ex) {
                buf.resetReaderIndex();
                if (nextHeader != null)
                    nextHeader = null;
            }
        }

        if (nextHeader != null) {
            buf.readBytes(nextHeader, nextHeader.capacity());
            try {
                MQMessage header = MQParser.decode(nextHeader);
                out.add(header);
            } catch (Exception e) {
                buf.resetReaderIndex();
                ctx.channel().pipeline().remove(this);
                throw e;
            } finally {
                nextHeader.release();
            }
        }
    } while (buf.readableBytes() > 1 && nextHeader != null);
}