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.corundumstudio.socketio.parser.Decoder.java

License:Apache License

private long parseLengthHeader(ByteBuf buffer) {
    int delimiterIndex = delimiterIndexOf(buffer, buffer.readerIndex(), buffer.readableBytes());
    if (delimiterIndex == -1) {
        throw new DecoderException("Can't find tail delimiter");
    }/*  w ww  .j  a va 2s .  co m*/

    long len = parseLong(buffer, delimiterIndex);
    buffer.readerIndex(delimiterIndex + Packet.DELIMITER_BYTES.length);
    return len;
}

From source file:com.corundumstudio.socketio.parser.Decoder.java

License:Apache License

private int delimiterIndexOf(ByteBuf buffer, int startIndex, int length) {
    ByteBuf buf = buffer.slice(startIndex, length);
    for (int i = 0; i < buf.readableBytes(); i++) {
        if (isCurrentDelimiter(buf, i)) {
            return startIndex + i;
        }/*from  ww w.ja  v  a2 s .c o m*/
    }
    return -1;
}

From source file:com.corundumstudio.socketio.protocol.PacketDecoder.java

License:Apache License

private boolean hasLengthHeader(ByteBuf buffer) {
    for (int i = 0; i < Math.min(buffer.readableBytes(), 10); i++) {
        byte b = buffer.getByte(buffer.readerIndex() + i);
        if (b == (byte) ':' && i > 0) {
            return true;
        }/*from w w  w. j a  v  a2  s  . co m*/
        if (b > 57 || b < 48) {
            return false;
        }
    }
    return false;
}

From source file:com.corundumstudio.socketio.protocol.PacketDecoder.java

License:Apache License

private String readString(ByteBuf frame) {
    return readString(frame, frame.readableBytes());
}

From source file:com.corundumstudio.socketio.protocol.PacketDecoder.java

License:Apache License

private Packet parseBinary(ClientHead head, ByteBuf frame) throws IOException {
    if (frame.getByte(0) == 1) {
        frame.readByte();/*ww w. j  a v  a 2  s .c  o m*/
        int headEndIndex = frame.bytesBefore((byte) -1);
        int len = (int) readLong(frame, headEndIndex);
        ByteBuf oldFrame = frame;
        frame = frame.slice(oldFrame.readerIndex() + 1, len);
        oldFrame.readerIndex(oldFrame.readerIndex() + 1 + len);
    }

    if (frame.getByte(0) == 'b' && frame.getByte(1) == '4') {
        frame.readShort();
    } else if (frame.getByte(0) == 4) {
        frame.readByte();
    }

    Packet binaryPacket = head.getLastBinaryPacket();
    if (binaryPacket != null) {
        ByteBuf attachBuf;
        if (frame.getByte(0) == 'b' && frame.getByte(1) == '4') {
            attachBuf = frame;
        } else {
            attachBuf = Base64.encode(frame);
        }
        binaryPacket.addAttachment(Unpooled.copiedBuffer(attachBuf));
        frame.readerIndex(frame.readerIndex() + frame.readableBytes());

        if (binaryPacket.isAttachmentsLoaded()) {
            LinkedList<ByteBuf> slices = new LinkedList<ByteBuf>();
            ByteBuf source = binaryPacket.getDataSource();
            for (int i = 0; i < binaryPacket.getAttachments().size(); i++) {
                ByteBuf attachment = binaryPacket.getAttachments().get(i);
                ByteBuf scanValue = Unpooled.copiedBuffer("{\"_placeholder\":true,\"num\":" + i + "}",
                        CharsetUtil.UTF_8);
                int pos = PacketEncoder.find(source, scanValue);
                if (pos == -1) {
                    throw new IllegalStateException(
                            "Can't find attachment by index: " + i + " in packet source");
                }

                ByteBuf prefixBuf = source.slice(source.readerIndex(), pos - source.readerIndex());
                slices.add(prefixBuf);
                slices.add(QUOTES);
                slices.add(attachment);
                slices.add(QUOTES);

                source.readerIndex(pos + scanValue.readableBytes());
            }
            slices.add(source.slice());

            ByteBuf compositeBuf = Unpooled.wrappedBuffer(slices.toArray(new ByteBuf[slices.size()]));
            parseBody(head, compositeBuf, binaryPacket);
            head.setLastBinaryPacket(null);
            return binaryPacket;
        }
    }
    return new Packet(PacketType.MESSAGE);
}

From source file:com.corundumstudio.socketio.protocol.PacketDecoder.java

License:Apache License

private void parseBody(ClientHead head, ByteBuf frame, Packet packet) throws IOException {
    if (packet.getType() == PacketType.MESSAGE) {
        if (packet.getSubType() == PacketType.CONNECT || packet.getSubType() == PacketType.DISCONNECT) {
            packet.setNsp(readString(frame));
        }//from   www .j av  a  2 s  . c o m

        if (packet.getSubType() == PacketType.ACK) {
            ByteBufInputStream in = new ByteBufInputStream(frame);
            AckCallback<?> callback = ackManager.getCallback(head.getSessionId(), packet.getAckId());
            AckArgs args = jsonSupport.readAckArgs(in, callback);
            packet.setData(args.getArgs());
        }

        if (packet.getSubType() == PacketType.EVENT || packet.getSubType() == PacketType.BINARY_EVENT) {
            if (packet.hasAttachments() && !packet.isAttachmentsLoaded()) {
                packet.setDataSource(Unpooled.copiedBuffer(frame));
                frame.readerIndex(frame.readableBytes());
                head.setLastBinaryPacket(packet);
            } else {
                ByteBufInputStream in = new ByteBufInputStream(frame);
                Event event = jsonSupport.readValue(packet.getNsp(), in, Event.class);
                packet.setName(event.getName());
                packet.setData(event.getArgs());
            }
        }
    }
}

From source file:com.corundumstudio.socketio.protocol.PacketEncoder.java

License:Apache License

public void encodeJsonP(Integer jsonpIndex, Queue<Packet> packets, ByteBuf out, ByteBufAllocator allocator,
        int limit) throws IOException {
    boolean jsonpMode = jsonpIndex != null;

    ByteBuf buf = allocateBuffer(allocator);

    int i = 0;/*from   w  w  w . j av a  2s.  com*/
    while (true) {
        Packet packet = packets.poll();
        if (packet == null || i == limit) {
            break;
        }

        ByteBuf packetBuf = allocateBuffer(allocator);
        encodePacket(packet, packetBuf, allocator, true);

        int packetSize = packetBuf.writerIndex();
        buf.writeBytes(toChars(packetSize));
        buf.writeBytes(B64_DELIMITER);
        buf.writeBytes(packetBuf);

        packetBuf.release();

        i++;

        for (ByteBuf attachment : packet.getAttachments()) {
            ByteBuf encodedBuf = Base64.encode(attachment, Base64Dialect.URL_SAFE);
            buf.writeBytes(toChars(encodedBuf.readableBytes() + 2));
            buf.writeBytes(B64_DELIMITER);
            buf.writeBytes(BINARY_HEADER);
            buf.writeBytes(encodedBuf);
        }
    }

    if (jsonpMode) {
        out.writeBytes(JSONP_HEAD);
        out.writeBytes(toChars(jsonpIndex));
        out.writeBytes(JSONP_START);
    }

    processUtf8(buf, out, jsonpMode);
    buf.release();

    if (jsonpMode) {
        out.writeBytes(JSONP_END);
    }
}

From source file:com.corundumstudio.socketio.protocol.PacketEncoder.java

License:Apache License

public void encodePackets(Queue<Packet> packets, ByteBuf buffer, ByteBufAllocator allocator, int limit)
        throws IOException {
    int i = 0;//  ww w.  j a  v a 2 s .  c  o m
    while (true) {
        Packet packet = packets.poll();
        if (packet == null || i == limit) {
            break;
        }
        encodePacket(packet, buffer, allocator, false);

        i++;

        for (ByteBuf attachment : packet.getAttachments()) {
            buffer.writeByte(1);
            buffer.writeBytes(longToBytes(attachment.readableBytes() + 1));
            buffer.writeByte(0xff);
            buffer.writeByte(4);
            buffer.writeBytes(attachment);
        }
    }
}

From source file:com.corundumstudio.socketio.protocol.PacketEncoder.java

License:Apache License

public static int find(ByteBuf buffer, ByteBuf searchValue) {
    for (int i = buffer.readerIndex(); i < buffer.readerIndex() + buffer.readableBytes(); i++) {
        if (isValueFound(buffer, i, searchValue)) {
            return i;
        }//from  ww w .j  av  a  2s.co m
    }
    return -1;
}

From source file:com.corundumstudio.socketio.protocol.PacketEncoder.java

License:Apache License

private static boolean isValueFound(ByteBuf buffer, int index, ByteBuf search) {
    for (int i = 0; i < search.readableBytes(); i++) {
        if (buffer.getByte(index + i) != search.getByte(i)) {
            return false;
        }/*from   ww w  . j  av a  2 s .  com*/
    }
    return true;
}