Package io.netty.buffer

Examples of io.netty.buffer.ByteBuf.readableBytes()

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            final Frame frame = (Frame) msg;
            final ByteBuf content = Transports.wrapWithLN(frame.content());
            frame.release();
            final FullHttpResponse response = new DefaultFullHttpResponse(request.getProtocolVersion(), OK, content);
            response.headers().set(CONTENT_TYPE, CONTENT_TYPE_JAVASCRIPT);
            response.headers().set(CONTENT_LENGTH, content.readableBytes());
            response.headers().set(CONNECTION, CLOSE);
            Transports.setDefaultHeaders(response, config, request);
            Transports.writeResponse(ctx, promise, response);
        } else {
            ctx.writeAndFlush(ReferenceCountUtil.retain(msg), promise);
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            final ByteBuf data = ctx.alloc().buffer();
            data.writeBytes(PREFIX.duplicate());
            data.writeBytes(Transports.escapeJson(frame.content(), data));
            frame.content().release();
            data.writeBytes(POSTFIX.duplicate());
            final int dataSize = data.readableBytes();
            ctx.writeAndFlush(new DefaultHttpContent(data));

            if (maxBytesLimit(dataSize)) {
                if (logger.isDebugEnabled()) {
                    logger.debug("max bytesSize limit reached [{}]", config.maxStreamingBytesSize());
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    boolean add(DatagramPacket packet) {
        if (count == packets.length) {
            return false;
        }
        ByteBuf content = packet.content();
        int len = content.readableBytes();
        if (len == 0) {
            return true;
        }
        NativeDatagramPacket p = packets[count];
        InetSocketAddress recipient = packet.recipient();
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        } else {
            data = (ByteBuf) msg;
            remoteAddress = null;
        }

        final int dataLen = data.readableBytes();
        if (dataLen == 0) {
            return true;
        }

        if (remoteAddress == null) {
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            assert cnt != 0;

            writtenBytes = Native.sendToAddresses(fd, array.memoryAddress(0),
                    cnt, remoteAddress.getAddress(), remoteAddress.getPort());
        } else  {
            ByteBuffer nioData = data.internalNioBuffer(data.readerIndex(), data.readableBytes());
            writtenBytes = Native.sendTo(fd, nioData, nioData.position(), nioData.limit(),
                    remoteAddress.getAddress(), remoteAddress.getPort());
        }

        return writtenBytes > 0;
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    }

    @Override
    public final void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        ByteBuf buf = internalBuffer();
        int readable = buf.readableBytes();
        if (buf.isReadable()) {
            ByteBuf bytes = buf.readBytes(readable);
            buf.release();
            ctx.fireChannelRead(bytes);
        } else {
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                ByteBuf data = (ByteBuf) msg;
                first = cumulation == null;
                if (first) {
                    cumulation = data;
                } else {
                    if (cumulation.writerIndex() > cumulation.maxCapacity() - data.readableBytes()
                            || cumulation.refCnt() > 1) {
                        // Expand cumulation (by replace it) when either there is not more room in the buffer
                        // or if the refCnt is greater then 1 which may happen when the user use slice().retain() or
                        // duplicate().retain().
                        //
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                        // duplicate().retain().
                        //
                        // See:
                        // - https://github.com/netty/netty/issues/2327
                        // - https://github.com/netty/netty/issues/1764
                        expandCumulation(ctx, data.readableBytes());
                    }
                    cumulation.writeBytes(data);
                    data.release();
                }
                callDecode(ctx, cumulation, out);
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        }
    }

    private void expandCumulation(ChannelHandlerContext ctx, int readable) {
        ByteBuf oldCumulation = cumulation;
        cumulation = ctx.alloc().buffer(oldCumulation.readableBytes() + readable);
        cumulation.writeBytes(oldCumulation);
        oldCumulation.release();
    }

    @Override
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                boolean handled = false;

                if (ByteBuf.class.isAssignableFrom(msg.getClass())) {
                    ByteBuf byteBuf = (ByteBuf) msg;
                    if (byteBuf.isReadable()) {
                        int readableBytes = byteBuf.readableBytes();
                        byte[] msgToPass = new byte[readableBytes];
                        byteBuf.readBytes(msgToPass);
                        handled = true;
                        ctx.fireChannelRead(msgToPass);
                    }
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