Package io.netty.buffer

Examples of io.netty.buffer.ChannelBuffer

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        ObjectOutputStream oout = new CompactObjectOutputStream(bout);
        oout.writeObject(obj);
        oout.flush();
        oout.close();

        ChannelBuffer buffer = bout.buffer();
        int objectSize = buffer.readableBytes();
        writeInt(objectSize);
        buffer.getBytes(0, this, objectSize);
    }
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            Object msg) throws Exception {
        if (!(msg instanceof ChannelBuffer)) {
            return msg;
        }

        ChannelBuffer src = (ChannelBuffer) msg;
        return Base64.encode(
                src, src.readerIndex(), src.readableBytes(),
                breakLines, dialect);
    }
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            ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
        if (!(msg instanceof ChannelBuffer)) {
            return msg;
        }

        ChannelBuffer body = (ChannelBuffer) msg;
        ChannelBuffer header = channel.getConfig().getBufferFactory().getBuffer(body.order(), lengthFieldLength);

        int length = lengthIncludesLengthFieldLength?
                body.readableBytes() + lengthFieldLength : body.readableBytes();
        switch (lengthFieldLength) {
        case 1:
            if (length >= 256) {
                throw new IllegalArgumentException(
                        "length does not fit into a byte: " + length);
            }
            header.writeByte((byte) length);
            break;
        case 2:
            if (length >= 65536) {
                throw new IllegalArgumentException(
                        "length does not fit into a short integer: " + length);
            }
            header.writeShort((short) length);
            break;
        case 3:
            if (length >= 16777216) {
                throw new IllegalArgumentException(
                        "length does not fit into a medium integer: " + length);
            }
            header.writeMedium(length);
            break;
        case 4:
            header.writeInt(length);
            break;
        case 8:
            header.writeLong(length);
            break;
        default:
            throw new Error("should not reach here");
        }
        return wrappedBuffer(header, body);
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            msg = ChannelBuffers.copiedBuffer((String) msg, CharsetUtil.US_ASCII);
        } else if (!(msg instanceof ChannelBuffer)) {
            return msg;
        }

        ChannelBuffer src = (ChannelBuffer) msg;
        return Base64.decode(
                src, src.readerIndex(), src.readableBytes(), dialect);
    }
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        }

        synchronized (z) {
            try {
                // Configure input.
                ChannelBuffer compressed = (ChannelBuffer) msg;
                byte[] in = new byte[compressed.readableBytes()];
                compressed.readBytes(in);
                z.next_in = in;
                z.next_in_index = 0;
                z.avail_in = in.length;

                // Configure output.
                byte[] out = new byte[in.length << 1];
                ChannelBuffer decompressed = ChannelBuffers.dynamicBuffer(
                        compressed.order(), out.length,
                        ctx.getChannel().getConfig().getBufferFactory());
                z.next_out = out;
                z.next_out_index = 0;
                z.avail_out = out.length;


                loop: for (;;) {
                    // Decompress 'in' into 'out'
                    int resultCode = z.inflate(JZlib.Z_SYNC_FLUSH);
                    if (z.next_out_index > 0) {
                        decompressed.writeBytes(out, 0, z.next_out_index);
                        z.avail_out = out.length;
                    }
                    z.next_out_index = 0;

                    switch (resultCode) {
                    case JZlib.Z_NEED_DICT:
                        if (dictionary == null) {
                            ZlibUtil.fail(z, "decompression failure", resultCode);
                        } else {
                            resultCode = z.inflateSetDictionary(dictionary, dictionary.length);
                            if (resultCode != JZlib.Z_OK) {
                                ZlibUtil.fail(z, "failed to set the dictionary", resultCode);
                            }
                        }
                        break;
                    case JZlib.Z_STREAM_END:
                        finished = true; // Do not decode anymore.
                        z.inflateEnd();
                        break loop;
                    case JZlib.Z_OK:
                        break;
                    case JZlib.Z_BUF_ERROR:
                        if (z.avail_in <= 0) {
                            break loop;
                        }
                        break;
                    default:
                        ZlibUtil.fail(z, "decompression failure", resultCode);
                    }
                }

                if (decompressed.writerIndex() != 0) { // readerIndex is always 0
                    return decompressed;
                } else {
                    return null;
                }
            } finally {
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        if (delimiters.length == 0) {
            throw new IllegalArgumentException("empty delimiters");
        }
        this.delimiters = new ChannelBuffer[delimiters.length];
        for (int i = 0; i < delimiters.length; i ++) {
            ChannelBuffer d = delimiters[i];
            validateDelimiter(d);
            this.delimiters[i] = d.slice(d.readerIndex(), d.readableBytes());
        }
        this.maxFrameLength = maxFrameLength;
        this.stripDelimiter = stripDelimiter;
        this.failFast = failFast;
    }
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    @Override
    protected Object decode(
            ChannelHandlerContext ctx, Channel channel, ChannelBuffer buffer) throws Exception {
        // Try all delimiters and choose the delimiter which yields the shortest frame.
        int minFrameLength = Integer.MAX_VALUE;
        ChannelBuffer minDelim = null;
        for (ChannelBuffer delim: delimiters) {
            int frameLength = indexOf(buffer, delim);
            if (frameLength >= 0 && frameLength < minFrameLength) {
                minFrameLength = frameLength;
                minDelim = delim;
            }
        }

        if (minDelim != null) {
            int minDelimLength = minDelim.capacity();
            ChannelBuffer frame;

            if (discardingTooLongFrame) {
                // We've just finished discarding a very large frame.
                // Go back to the initial state.
                discardingTooLongFrame = false;
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    protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
        if (!(msg instanceof ChannelBuffer) || finished.get()) {
            return msg;
        }

        ChannelBuffer result;
        synchronized (z) {
            try {
                // Configure input.
                ChannelBuffer uncompressed = (ChannelBuffer) msg;
                byte[] in = new byte[uncompressed.readableBytes()];
                uncompressed.readBytes(in);
                z.next_in = in;
                z.next_in_index = 0;
                z.avail_in = in.length;

                // Configure output.
                byte[] out = new byte[(int) Math.ceil(in.length * 1.001) + 12];
                z.next_out = out;
                z.next_out_index = 0;
                z.avail_out = out.length;

                // Note that Z_PARTIAL_FLUSH has been deprecated.
                int resultCode = z.deflate(JZlib.Z_SYNC_FLUSH);
                if (resultCode != JZlib.Z_OK) {
                    ZlibUtil.fail(z, "compression failure", resultCode);
                }

                if (z.next_out_index != 0) {
                    result = ctx.getChannel().getConfig().getBufferFactory().getBuffer(
                            uncompressed.order(), out, 0, z.next_out_index);
                } else {
                    result = ChannelBuffers.EMPTY_BUFFER;
                }
            } finally {
                // Deference the external references explicitly to tell the VM that
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                ctx.sendDownstream(evt);
            }
            return Channels.succeededFuture(ctx.getChannel());
        }

        ChannelBuffer footer;
        ChannelFuture future;
        synchronized (z) {
            try {
                // Configure input.
                z.next_in = EMPTY_ARRAY;
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        return new ObjectOutputStream(out);
    }

    @Override
    protected Object encode(ChannelHandlerContext context, Channel channel, Object msg) throws Exception {
        ChannelBuffer buffer = buffer(context);
        ObjectOutputStream oout = this.oout;
        if (resetInterval != 0) {
            // Resetting will prevent OOM on the receiving side.
            writtenObjects ++;
            if (writtenObjects % resetInterval == 0) {
                oout.reset();

                // Also discard the byproduct to avoid OOM on the sending side.
                buffer.discardReadBytes();
            }
        }
        oout.writeObject(msg);
        oout.flush();

        return buffer.readBytes(buffer.readableBytes());
    }
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