Example usage for io.netty.buffer ByteBuf readableBytes

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.fanavard.challenge.server.websocket.server.WebSocketServerHandler.java

License:Apache License

private void handleHttpRequest(ChannelHandlerContext ctx, FullHttpRequest req) {
    // Handle a bad request.
    if (!req.decoderResult().isSuccess()) {
        sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, BAD_REQUEST));
        return;/*from w w w . ja  v  a 2  s. co m*/
    }

    // Allow only GET methods.
    if (req.method() != GET) {
        sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, FORBIDDEN));
        return;
    }

    // Send the demo page and favicon.ico
    if ("/".equals(req.uri())) {
        ByteBuf content = WebSocketServerIndexPage.getContent(getWebSocketLocation(req));
        FullHttpResponse res = new DefaultFullHttpResponse(HTTP_1_1, OK, content);

        res.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
        HttpHeaderUtil.setContentLength(res, content.readableBytes());

        sendHttpResponse(ctx, req, res);
        return;
    }
    if ("/favicon.ico".equals(req.uri())) {
        FullHttpResponse res = new DefaultFullHttpResponse(HTTP_1_1, NOT_FOUND);
        sendHttpResponse(ctx, req, res);
        return;
    }

    // Handshake
    WebSocketServerHandshakerFactory wsFactory = new WebSocketServerHandshakerFactory(getWebSocketLocation(req),
            null, true);
    handshaker = wsFactory.newHandshaker(req);
    if (handshaker == null) {
        WebSocketServerHandshakerFactory.sendUnsupportedVersionResponse(ctx.channel());
    } else {
        handshaker.handshake(ctx.channel(), req);
    }
}

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From source file:com.farsunset.cim.sdk.android.filter.ClientMessageDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext arg0, ByteBuf buffer, List<Object> queue) throws Exception {

    /**/*from  w  ww  . j  av  a2 s .  c om*/
     * ?3?
     */
    if (buffer.readableBytes() < CIMConstant.DATA_HEADER_LENGTH) {
        return;
    }

    buffer.markReaderIndex();

    buffer.markReaderIndex();

    byte conetnType = buffer.readByte();

    byte lv = buffer.readByte();// int ?
    byte hv = buffer.readByte();// int ?

    int conetnLength = getContentLength(lv, hv);

    // ?????
    if (conetnLength > buffer.readableBytes()) {
        buffer.resetReaderIndex();
        return;
    }

    byte[] dataBytes = new byte[conetnLength];
    buffer.readBytes(dataBytes);

    Object message = mappingMessageObject(dataBytes, conetnType);

    if (message != null) {
        queue.add(message);
    }

}

---

From source file:com.farsunset.cim.sdk.server.filter.decoder.AppMessageDecoder.java

License:Apache License

@Override
public void decode(ChannelHandlerContext arg0, ByteBuf buffer, List<Object> queue) throws Exception {

    /**//  w ww  .j  a va  2s  .c  o m
     * ?3?
     */
    if (buffer.readableBytes() < CIMConstant.DATA_HEADER_LENGTH) {
        return;
    }

    buffer.markReaderIndex();

    byte conetnType = buffer.readByte();

    byte lv = buffer.readByte();// int ?
    byte hv = buffer.readByte();// int ?

    int conetnLength = getContentLength(lv, hv);

    // ?????
    if (conetnLength <= buffer.readableBytes()) {
        byte[] dataBytes = new byte[conetnLength];
        buffer.readBytes(dataBytes);

        Object message = mappingMessageObject(dataBytes, conetnType);
        if (message != null) {
            arg0.channel().attr(AttributeKey.valueOf(CIMSession.PROTOCOL)).set(CIMSession.NATIVEAPP);
            queue.add(message);
            return;
        }
    }

    buffer.resetReaderIndex();
}

---

From source file:com.farsunset.cim.sdk.server.filter.decoder.WebMessageDecoder.java

License:Apache License

@Override
public void decode(ChannelHandlerContext arg0, ByteBuf iobuffer, List<Object> queue) throws Exception {

    iobuffer.markReaderIndex();// w  w  w  .j av  a2  s  .  c om

    /**
     * ?fin??1 0 ??
     */
    byte tag = iobuffer.readByte();
    int frameFin = tag > 0 ? 0 : 1; // ?byte ?1 ?0 fin 0  1
    if (frameFin == 0) {
        iobuffer.resetReaderIndex();
        return;
    }

    /**
     * ?protobuf?? OPCODE_BINARY? OPCODE_CLOSE
     */
    int frameOqcode = tag & TAG_MASK;

    if (OPCODE_BINARY == frameOqcode) {

        byte head = iobuffer.readByte();
        byte datalength = (byte) (head & PAYLOADLEN);
        int realLength = 0;

        /**
         * Payload len7?7+16?7+64????? 0-125payload
         * data 1267????2payload data
         * 1277????8payload data
         */
        if (datalength == HAS_EXTEND_DATA) {
            realLength = iobuffer.readShort();
        } else if (datalength == HAS_EXTEND_DATA_CONTINUE) {
            realLength = (int) iobuffer.readLong();
        } else {
            realLength = datalength;
        }

        boolean masked = (head >> 7 & MASK) == 1;
        if (masked) {// ?
            // ??
            byte[] mask = new byte[4];
            iobuffer.readBytes(mask);

            byte[] data = new byte[realLength];
            iobuffer.readBytes(data);
            for (int i = 0; i < realLength; i++) {
                // ??
                data[i] = (byte) (data[i] ^ mask[i % 4]);
            }

            handleMessage(data, queue);
        }

    } else if (OPCODE_CLOSE == frameOqcode) {
        handleClose(arg0);
    } else {
        // ?
        iobuffer.readBytes(new byte[iobuffer.readableBytes()]);
    }

}

---

From source file:com.farsunset.cim.sdk.server.filter.ServerMessageDecoder.java

License:Apache License

private boolean tryWebsocketHandleHandshake(ChannelHandlerContext arg0, ByteBuf iobuffer, List<Object> queue) {

    iobuffer.markReaderIndex();//  w  ww  .j  a va2s .  c o m

    byte[] data = new byte[iobuffer.readableBytes()];
    iobuffer.readBytes(data);

    String request = new String(data);
    String secKey = getSecWebSocketKey(request);
    boolean handShake = secKey != null && Objects.equals(getUpgradeProtocol(request), CIMSession.WEBSOCKET);
    if (handShake) {
        /**
         * ?????HANDSHAKE_FRAME,?session??websocket
         */
        arg0.channel().attr(AttributeKey.valueOf(CIMSession.PROTOCOL)).set(CIMSession.WEBSOCKET);

        SentBody body = new SentBody();
        body.setKey(CIMNioSocketAcceptor.WEBSOCKET_HANDLER_KEY);
        body.setTimestamp(System.currentTimeMillis());
        body.put("key", secKey);
        queue.add(body);

    } else {
        iobuffer.resetReaderIndex();
    }

    return handShake;
}

---

From source file:com.feihong.newzxclient.tcp.IntLengthDecoder.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() < 4) {
        //String strError = String.format("Read length data error, in.readableBytes(): %d, length: %d", in.readableBytes(), 4);
        //writeLog(strError);
        return;//from  w w  w  . j  a  v  a 2s .  c  om
    }

    in.markReaderIndex();

    // Wait until the whole data is available.
    int dataLength = in.readInt();
    if (in.readableBytes() < dataLength) {
        //String strError = String.format("Read length data error, in.readableBytes(): %d, length: %d", in.readableBytes(), dataLength + 4);
        //writeLog(strError);

        in.resetReaderIndex();
        return;
    }

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

    try {
        Msg.CommonMessage commonMessage = Msg.CommonMessage.parseFrom(decoded);
        out.add(commonMessage);
    } catch (InvalidProtocolBufferException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

---

From source file:com.fjn.helper.frameworkex.netty.v4.echotest.EchoClientHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
    System.out.println("Client received : " + ByteBufUtil.hexDump(msg.readBytes(msg.readableBytes())));
    msg.release();/*from  w  w  w .java  2 s .c  o  m*/
}

---

From source file:com.flowpowered.network.pipeline.MessageProcessorDecoder.java

License:MIT License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> frames) throws Exception {
    MessageProcessor processor = getProcessor();
    if (processor == null) {
        frames.add(buf.readBytes(buf.readableBytes()));
        return;//w  w  w  . j av  a  2  s.  c  o  m
    }
    // Eventually, we will run out of bytes and a ReplayableError will be called
    ByteBuf liveBuffer = ctx.alloc().buffer();
    liveBuffer = processor.processInbound(ctx, buf, liveBuffer);
    frames.add(liveBuffer);
}

---

From source file:com.flowpowered.network.pipeline.MessageProcessorDecoderTest.java

License:MIT License

@Test
public void test() throws Exception {
    // Preprocessor basically is split into two parts
    // Part 1 is just a direct copy
    // Part 2 negates all bytes before copying
    final AtomicReference<MessageProcessor> processor = new AtomicReference<>();
    MessageProcessorDecoder processorDecoder = new MessageProcessorDecoder(null) {
        @Override/*  w w  w. j  a v  a2s.co m*/
        protected MessageProcessor getProcessor() {
            return processor.get();
        }
    };

    // Set up a fake ChannelHandlerContext
    FakeChannelHandlerContext fake = ChannelHandlerContextFaker.setup();
    AtomicReference<ByteBuf> ref = new AtomicReference<>();
    fake.setReference(ref);
    LinkedList<byte[]> outputList = new LinkedList<>();

    Random r = new Random();

    // Get some random bytes for data
    byte[] input = new byte[LENGTH];
    r.nextBytes(input);

    boolean breakOccured = false;
    int position = 0;

    for (int i = 0; i < input.length;) {
        // Simulate real data read
        int burstSize = r.nextInt(512);
        // With a 1/10 chance of having an extra-large burst
        if (r.nextInt(10) == 0) {
            burstSize *= 10;
        }

        // Final burst needs to be clamped
        if (i + burstSize > input.length) {
            burstSize = input.length - i;
        }

        // And we can't negate in the middle of a burst
        if (i + burstSize > BREAK && !breakOccured) {
            burstSize = BREAK - i;
        }

        // Write info to a new ByteBuf
        final ByteBuf buf = Unpooled.buffer(burstSize);
        buf.writeBytes(input, i, burstSize);
        i += burstSize;

        // Fake a read
        processorDecoder.channelRead(fake, buf);

        final ByteBuf returned = ref.get();

        while (returned != null) {
            int packetSize = r.nextInt(128) + 1;
            if (r.nextInt(10) == 0) {
                packetSize *= 20;
            }

            if (packetSize > returned.readableBytes()) {
                packetSize = returned.readableBytes();
            }
            if (position + packetSize > BREAK && !breakOccured) {
                packetSize = BREAK - position;
            }
            if (position + packetSize > LENGTH) {
                packetSize = LENGTH - position;
            }

            if (packetSize == 0) {
                break;
            }

            byte[] array = new byte[packetSize];

            returned.readBytes(array);
            position += packetSize;

            if (position == BREAK) {
                processor.set(new NegatingProcessor(512));
                breakOccured = true;
            }
            outputList.add(array);
        }
    }

    // Get the output data and combine into one array
    byte[] output = new byte[LENGTH];
    int i = 0;
    for (byte[] array : outputList) {
        for (int j = 0; j < array.length; j++) {
            output[i++] = array[j];
        }
    }

    for (i = 0; i < input.length; i++) {
        byte expected = i < BREAK ? input[i] : (byte) ~input[i];
        if (output[i] != expected) {
            for (int j = Math.max(0, i - 10); j <= i + 10; j++) {
                System.out.println(j + ") " + Integer.toBinaryString(j < BREAK ? input[j] : (byte) ~input[j])
                        + " " + Integer.toBinaryString(output[j]));
            }
        }

        if (i < BREAK) {
            assertTrue("Input/Output mismatch at position " + i + ". Expected " + input[i] + " but got "
                    + output[i] + ". Break is: " + BREAK, output[i] == input[i]);
        } else {
            assertTrue(
                    "Input/Output mismatch at position " + i + ", after the processor change. Expected "
                            + (byte) ~input[i] + " but got " + output[i] + ". Break is: " + BREAK,
                    output[i] == (byte) ~input[i]);
        }
    }
}

---

From source file:com.flowpowered.network.pipeline.MessageProcessorEncoder.java

License:MIT License

@Override
protected void encode(ChannelHandlerContext ctx, final ByteBuf buf, List<Object> out) throws Exception {
    final MessageProcessor processor = getProcessor();
    if (processor == null) {
        out.add(buf.readBytes(buf.readableBytes()));
        return;/*  w  ww.j ava 2  s .  c o  m*/
    }
    ByteBuf toAdd = ctx.alloc().buffer();
    toAdd = processor.processOutbound(ctx, buf, toAdd);
    out.add(toAdd);
}

---

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