Package io.netty.buffer

Examples of io.netty.buffer.ChannelBuffer

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     * @param bytes
     *            Bytes to encode
     * @return encoded string
     */
    static String base64(byte[] bytes) {
        ChannelBuffer hashed = ChannelBuffers.wrappedBuffer(bytes);
        return Base64.encode(hashed).toString(CharsetUtil.UTF_8);
    }
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        decoder.offer(buf);
        return ChannelBuffers.wrappedBuffer(decoder.pollAll(new ChannelBuffer[decoder.size()]));
    }

    private ChannelBuffer finishDecode() {
        ChannelBuffer result;
        if (decoder.finish()) {
            result = ChannelBuffers.wrappedBuffer(decoder.pollAll(new ChannelBuffer[decoder.size()]));
        } else {
            result = ChannelBuffers.EMPTY_BUFFER;
        }
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            throws Exception {

        if (msg instanceof SpdyDataFrame) {

            SpdyDataFrame spdyDataFrame = (SpdyDataFrame) msg;
            ChannelBuffer data = spdyDataFrame.getData();
            byte flags = spdyDataFrame.isLast() ? SPDY_DATA_FLAG_FIN : 0;
            if (spdyDataFrame.isCompressed()) {
                flags |= SPDY_DATA_FLAG_COMPRESS;
            }
            ChannelBuffer header = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE);
            header.writeInt(spdyDataFrame.getStreamID() & 0x7FFFFFFF);
            header.writeByte(flags);
            header.writeMedium(data.readableBytes());
            return ChannelBuffers.wrappedBuffer(header, data);

        } else if (msg instanceof SpdySynStreamFrame) {

            SpdySynStreamFrame spdySynStreamFrame = (SpdySynStreamFrame) msg;
            ChannelBuffer data = compressHeaderBlock(
                    encodeHeaderBlock(spdySynStreamFrame));
            byte flags = spdySynStreamFrame.isLast() ? SPDY_FLAG_FIN : 0;
            if (spdySynStreamFrame.isUnidirectional()) {
                flags |= SPDY_FLAG_UNIDIRECTIONAL;
            }
            int headerBlockLength = data.readableBytes();
            int length = (headerBlockLength == 0) ? 12 : 10 + headerBlockLength;
            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE + length);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_SYN_STREAM_FRAME);
            frame.writeByte(flags);
            frame.writeMedium(length);
            frame.writeInt(spdySynStreamFrame.getStreamID());
            frame.writeInt(spdySynStreamFrame.getAssociatedToStreamID());
            frame.writeShort(((short) spdySynStreamFrame.getPriority()) << 14);
            if (data.readableBytes() == 0) {
                frame.writeShort(0);
            }
            return ChannelBuffers.wrappedBuffer(frame, data);

        } else if (msg instanceof SpdySynReplyFrame) {

            SpdySynReplyFrame spdySynReplyFrame = (SpdySynReplyFrame) msg;
            ChannelBuffer data = compressHeaderBlock(
                    encodeHeaderBlock(spdySynReplyFrame));
            byte flags = spdySynReplyFrame.isLast() ? SPDY_FLAG_FIN : 0;
            int headerBlockLength = data.readableBytes();
            int length = (headerBlockLength == 0) ? 8 : 6 + headerBlockLength;
            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE + length);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_SYN_REPLY_FRAME);
            frame.writeByte(flags);
            frame.writeMedium(length);
            frame.writeInt(spdySynReplyFrame.getStreamID());
            if (data.readableBytes() == 0) {
                frame.writeInt(0);
            } else {
                frame.writeShort(0);
            }
            return ChannelBuffers.wrappedBuffer(frame, data);

        } else if (msg instanceof SpdyRstStreamFrame) {

            SpdyRstStreamFrame spdyRstStreamFrame = (SpdyRstStreamFrame) msg;
            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE + 8);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_RST_STREAM_FRAME);
            frame.writeInt(8);
            frame.writeInt(spdyRstStreamFrame.getStreamID());
            frame.writeInt(spdyRstStreamFrame.getStatus().getCode());
            return frame;

        } else if (msg instanceof SpdySettingsFrame) {

            SpdySettingsFrame spdySettingsFrame = (SpdySettingsFrame) msg;
            byte flags = spdySettingsFrame.clearPreviouslyPersistedSettings() ?
                SPDY_SETTINGS_CLEAR : 0;
            Set<Integer> IDs = spdySettingsFrame.getIDs();
            int numEntries = IDs.size();
            int length = 4 + numEntries * 8;
            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE + length);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_SETTINGS_FRAME);
            frame.writeByte(flags);
            frame.writeMedium(length);
            frame.writeInt(numEntries);
            for (Integer ID: IDs) {
                int id = ID.intValue();
                byte ID_flags = (byte) 0;
                if (spdySettingsFrame.persistValue(id)) {
                    ID_flags |= SPDY_SETTINGS_PERSIST_VALUE;
                }
                if (spdySettingsFrame.isPersisted(id)) {
                    ID_flags |= SPDY_SETTINGS_PERSISTED;
                }
                // Chromium Issue 79156
                // SPDY setting ids are not written in network byte order
                // Write id assuming the architecture is little endian
                frame.writeByte((id >>  0) & 0xFF);
                frame.writeByte((id >>  8) & 0xFF);
                frame.writeByte((id >> 16) & 0xFF);
                frame.writeByte(ID_flags);
                frame.writeInt(spdySettingsFrame.getValue(id));
            }
            return frame;

        } else if (msg instanceof SpdyNoOpFrame) {

            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_NOOP_FRAME);
            frame.writeInt(0);
            return frame;

        } else if (msg instanceof SpdyPingFrame) {

            SpdyPingFrame spdyPingFrame = (SpdyPingFrame) msg;
            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE + 4);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_PING_FRAME);
            frame.writeInt(4);
            frame.writeInt(spdyPingFrame.getID());
            return frame;

        } else if (msg instanceof SpdyGoAwayFrame) {

            SpdyGoAwayFrame spdyGoAwayFrame = (SpdyGoAwayFrame) msg;
            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE + 4);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_GOAWAY_FRAME);
            frame.writeInt(4);
            frame.writeInt(spdyGoAwayFrame.getLastGoodStreamID());
            return frame;

        } else if (msg instanceof SpdyHeadersFrame) {

            SpdyHeadersFrame spdyHeadersFrame = (SpdyHeadersFrame) msg;
            ChannelBuffer data = compressHeaderBlock(
                    encodeHeaderBlock(spdyHeadersFrame));
            int headerBlockLength = data.readableBytes();
            int length = (headerBlockLength == 0) ? 4 : 6 + headerBlockLength;
            ChannelBuffer frame = ChannelBuffers.buffer(
                    ByteOrder.BIG_ENDIAN, SPDY_HEADER_SIZE + length);
            frame.writeShort(SPDY_VERSION | 0x8000);
            frame.writeShort(SPDY_HEADERS_FRAME);
            frame.writeInt(length);
            frame.writeInt(spdyHeadersFrame.getStreamID());
            if (data.readableBytes() != 0) {
                frame.writeShort(0);
            }
            return ChannelBuffers.wrappedBuffer(frame, data);
        }

        // Unknown message type
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        }
        if (numHeaders > SPDY_MAX_NV_LENGTH) {
            throw new IllegalArgumentException(
                    "header block contains too many headers");
        }
        ChannelBuffer headerBlock = ChannelBuffers.dynamicBuffer(
                ByteOrder.BIG_ENDIAN, 256);
        headerBlock.writeShort(numHeaders);
        for (String name: names) {
            byte[] nameBytes = name.getBytes("UTF-8");
            headerBlock.writeShort(nameBytes.length);
            headerBlock.writeBytes(nameBytes);
            int savedIndex = headerBlock.writerIndex();
            int valueLength = 0;
            headerBlock.writeShort(valueLength);
            for (String value: headerFrame.getHeaders(name)) {
                byte[] valueBytes = value.getBytes("UTF-8");
                headerBlock.writeBytes(valueBytes);
                headerBlock.writeByte(0);
                valueLength += valueBytes.length + 1;
            }
            valueLength --;
            if (valueLength > SPDY_MAX_NV_LENGTH) {
                throw new IllegalArgumentException(
                        "header exceeds allowable length: " + name);
            }
            headerBlock.setShort(savedIndex, valueLength);
            headerBlock.writerIndex(headerBlock.writerIndex() - 1);
        }
        return headerBlock;
    }
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     * @param chunk the new received chunk
     * @throws ErrorDataDecoderException if there is a problem with the charset decoding or
     *          other errors
     */
    public void offer(HttpChunk chunk) throws ErrorDataDecoderException {
        ChannelBuffer chunked = chunk.getContent();
        if (undecodedChunk == null) {
            undecodedChunk = chunked;
        } else {
            //undecodedChunk = ChannelBuffers.wrappedBuffer(undecodedChunk, chunk.getContent());
            // less memory usage
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                    // save last valid position
                    lastPosition = undecodedChunk.readerIndex();
                }
            }
        }
        ChannelBuffer buffer = undecodedChunk.slice(readerIndex, lastPosition -
                readerIndex);
        if (found) {
            // found so lastPosition is correct and final
            try {
                currentFileUpload.addContent(buffer, true);
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                }
                chunked = this.chunked = true;
            } else {
                chunked = this.chunked = HttpCodecUtil.isTransferEncodingChunked(m);
            }
            ChannelBuffer header = ChannelBuffers.dynamicBuffer(
                    channel.getConfig().getBufferFactory());
            encodeInitialLine(header, m);
            encodeHeaders(header, m);
            header.writeByte(CR);
            header.writeByte(LF);

            ChannelBuffer content = m.getContent();
            if (!content.readable()) {
                return header; // no content
            } else if (chunked) {
                throw new IllegalArgumentException(
                        "HttpMessage.content must be empty " +
                        "if Transfer-Encoding is chunked.");
            } else {
                return wrappedBuffer(header, content);
            }
        }

        if (msg instanceof HttpChunk) {
            HttpChunk chunk = (HttpChunk) msg;
            if (chunked) {
                if (chunk.isLast()) {
                    chunked = false;
                    if (chunk instanceof HttpChunkTrailer) {
                        ChannelBuffer trailer = ChannelBuffers.dynamicBuffer(
                                channel.getConfig().getBufferFactory());
                        trailer.writeByte((byte) '0');
                        trailer.writeByte(CR);
                        trailer.writeByte(LF);
                        encodeTrailingHeaders(trailer, (HttpChunkTrailer) chunk);
                        trailer.writeByte(CR);
                        trailer.writeByte(LF);
                        return trailer;
                    } else {
                        return LAST_CHUNK.duplicate();
                    }
                } else {
                    ChannelBuffer content = chunk.getContent();
                    int contentLength = content.readableBytes();

                    return wrappedBuffer(
                            copiedBuffer(
                                    Integer.toHexString(contentLength),
                                    CharsetUtil.US_ASCII),
                            wrappedBuffer(CRLF),
                            content.slice(content.readerIndex(), contentLength),
                            wrappedBuffer(CRLF));
                }
            } else {
                if (chunk.isLast()) {
                    return null;
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    public void setValue(String value) throws IOException {
        if (value == null) {
            throw new NullPointerException("value");
        }
        byte [] bytes = value.getBytes(charset);
        ChannelBuffer buffer = ChannelBuffers.wrappedBuffer(bytes);
        if (definedSize > 0) {
            definedSize = buffer.readableBytes();
        }
        setContent(buffer);
    }
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     * accordingly
     */
    private ChannelBuffer fillChannelBuffer() {
        int length = currentBuffer.readableBytes();
        if (length > HttpPostBodyUtil.chunkSize) {
            ChannelBuffer slice =
                currentBuffer.slice(currentBuffer.readerIndex(), HttpPostBodyUtil.chunkSize);
            currentBuffer.skipBytes(HttpPostBodyUtil.chunkSize);
            return slice;
        } else {
            // to continue
            ChannelBuffer slice = currentBuffer;
            currentBuffer = null;
            return slice;
        }
    }
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     */
    private HttpChunk encodeNextChunkMultipart(int sizeleft) throws ErrorDataEncoderException {
        if (currentData == null) {
            return null;
        }
        ChannelBuffer buffer;
        if (currentData instanceof InternalAttribute) {
            String internal = ((InternalAttribute) currentData).toString();
            byte[] bytes;
            try {
                bytes = internal.getBytes("ASCII");
            } catch (UnsupportedEncodingException e) {
                throw new ErrorDataEncoderException(e);
            }
            buffer = ChannelBuffers.wrappedBuffer(bytes);
            currentData = null;
        } else {
            if (currentData instanceof Attribute) {
                try {
                    buffer = ((Attribute) currentData).getChunk(sizeleft);
                } catch (IOException e) {
                    throw new ErrorDataEncoderException(e);
                }
            } else {
                try {
                    buffer = ((FileUpload) currentData).getChunk(sizeleft);
                } catch (IOException e) {
                    throw new ErrorDataEncoderException(e);
                }
            }
            if (buffer.capacity() == 0) {
                // end for current InterfaceHttpData, need more data
                currentData = null;
                return null;
            }
        }
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