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:cloudeventbus.codec.Encoder.java

License:Open Source License

@Override
public void encode(ChannelHandlerContext ctx, Frame frame, ByteBuf out) throws Exception {
    LOGGER.debug("Encoding frame {}", frame);
    switch (frame.getFrameType()) {
    case AUTHENTICATE:
        final AuthenticationRequestFrame authenticationRequestFrame = (AuthenticationRequestFrame) frame;
        out.writeByte(FrameType.AUTHENTICATE.getOpcode());
        out.writeByte(' ');
        final String challenge = Base64.encodeBase64String(authenticationRequestFrame.getChallenge());
        writeString(out, challenge);/*from w  ww .  j a v  a 2 s . com*/
        break;
    case AUTH_RESPONSE:
        final AuthenticationResponseFrame authenticationResponseFrame = (AuthenticationResponseFrame) frame;
        out.writeByte(FrameType.AUTH_RESPONSE.getOpcode());
        out.writeByte(' ');

        // Write certificate chain
        final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        final OutputStream base64Out = new Base64OutputStream(outputStream, true, Integer.MAX_VALUE,
                new byte[0]);
        CertificateStoreLoader.store(base64Out, authenticationResponseFrame.getCertificates());
        out.writeBytes(outputStream.toByteArray());
        out.writeByte(' ');

        // Write salt
        final byte[] encodedSalt = Base64.encodeBase64(authenticationResponseFrame.getSalt());
        out.writeBytes(encodedSalt);
        out.writeByte(' ');

        // Write signature
        final byte[] encodedDigitalSignature = Base64
                .encodeBase64(authenticationResponseFrame.getDigitalSignature());
        out.writeBytes(encodedDigitalSignature);
        break;
    case ERROR:
        final ErrorFrame errorFrame = (ErrorFrame) frame;
        out.writeByte(FrameType.ERROR.getOpcode());
        out.writeByte(' ');
        writeString(out, Integer.toString(errorFrame.getCode().getErrorNumber()));
        if (errorFrame.getMessage() != null) {
            out.writeByte(' ');
            writeString(out, errorFrame.getMessage());
        }
        break;
    case GREETING:
        final GreetingFrame greetingFrame = (GreetingFrame) frame;
        out.writeByte(FrameType.GREETING.getOpcode());
        out.writeByte(' ');
        writeString(out, Integer.toString(greetingFrame.getVersion()));
        out.writeByte(' ');
        writeString(out, greetingFrame.getAgent());
        out.writeByte(' ');
        writeString(out, Long.toString(greetingFrame.getId()));
        break;
    case PING:
        out.writeByte(FrameType.PING.getOpcode());
        break;
    case PONG:
        out.writeByte(FrameType.PONG.getOpcode());
        break;
    case PUBLISH:
        final PublishFrame publishFrame = (PublishFrame) frame;
        out.writeByte(FrameType.PUBLISH.getOpcode());
        out.writeByte(' ');
        writeString(out, publishFrame.getSubject().toString());
        if (publishFrame.getReplySubject() != null) {
            out.writeByte(' ');
            writeString(out, publishFrame.getReplySubject().toString());
        }
        out.writeByte(' ');
        final ByteBuf body = Unpooled.wrappedBuffer(publishFrame.getBody().getBytes(CharsetUtil.UTF_8));
        writeString(out, Integer.toString(body.readableBytes()));
        out.writeBytes(Codec.DELIMITER);
        out.writeBytes(body);
        break;
    case SERVER_READY:
        out.writeByte(FrameType.SERVER_READY.getOpcode());
        break;
    case SUBSCRIBE:
        final SubscribeFrame subscribeFrame = (SubscribeFrame) frame;
        out.writeByte(FrameType.SUBSCRIBE.getOpcode());
        out.writeByte(' ');
        writeString(out, subscribeFrame.getSubject().toString());
        break;
    case UNSUBSCRIBE:
        final UnsubscribeFrame unsubscribeFrame = (UnsubscribeFrame) frame;
        out.writeByte(FrameType.UNSUBSCRIBE.getOpcode());
        out.writeByte(' ');
        writeString(out, unsubscribeFrame.getSubject().toString());
        break;
    default:
        throw new EncodingException("Don't know how to encode message of type " + frame.getClass().getName());
    }
    out.writeBytes(Codec.DELIMITER);
}

From source file:cn.ifengkou.hestia.serialize.MessageDecoder.java

License:Apache License

protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
    if (in.readableBytes() < MessageDecoder.MESSAGE_LENGTH) {
        return;//from   w  w  w  .  j  av  a 2s  .co  m
    }

    in.markReaderIndex();
    int messageLength = in.readInt();

    if (messageLength < 0) {
        ctx.close();
    }

    if (in.readableBytes() < messageLength) {
        in.resetReaderIndex();
        return;
    } else {
        byte[] messageBody = new byte[messageLength];
        in.readBytes(messageBody);

        try {
            Object obj = messageCodecUtil.decode(messageBody);
            out.add(obj);
        } catch (IOException ex) {
            LOGGER.error("messageCodeUtil decode failed!", ex);
        }
    }
}

From source file:cn.jpush.api.common.connection.HttpResponseHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, FullHttpResponse msg) throws Exception {
    Integer streamId = msg.headers().getInt(HttpConversionUtil.ExtensionHeaderNames.STREAM_ID.text());
    if (streamId == null) {
        System.err.println("HttpResponseHandler unexpected message received: " + msg);
        return;/*from   w  ww .j a  v  a 2  s.  c o m*/
    } else {
        LOG.debug("HttpResponseHandler response message received: " + msg);
    }

    Entry<ChannelFuture, ChannelPromise> entry = streamidPromiseMap.get(streamId);
    List<String> list = new ArrayList<String>();
    list.add(msg.status().code() + "");
    if (entry == null) {
        System.err.println("Message received for unknown stream id " + streamId);
    } else {
        // Do stuff with the message (for now just print it)
        ByteBuf byteBuf = msg.content();
        if (byteBuf.isReadable()) {
            int contentLength = byteBuf.readableBytes();
            byte[] arr = new byte[contentLength];
            byteBuf.readBytes(arr);
            String content = new String(arr, 0, contentLength, CharsetUtil.UTF_8);
            list.add(content);
            System.out.println("Protocol version: " + msg.protocolVersion());
            System.out.println("status: " + list.get(0) + " response content: " + list.get(1));
            LOG.debug("Protocol version: " + msg.protocolVersion());
            LOG.debug("status: " + list.get(0) + " response content: " + list.get(1));
        }

        mNettyHttp2Client.setResponse(streamId + ctx.channel().id().asShortText(), list);
        if (null != mCallback) {
            ResponseWrapper wrapper = new ResponseWrapper();
            wrapper.responseCode = Integer.valueOf(list.get(0));
            if (list.size() > 1) {
                wrapper.responseContent = list.get(1);
            }
            mCallback.onSucceed(wrapper);
        }

        entry.getValue().setSuccess();
        if (msg instanceof HttpContent) {
            HttpContent content = (HttpContent) msg;
            System.err.println("content: " + content.content().toString(CharsetUtil.UTF_8));
            System.err.flush();

            if (content instanceof LastHttpContent) {
                System.err.println(" end of content");
                //                    ctx.close();
            }
        }

    }
}

From source file:cn.npt.net.websocket.WebSocketServerHandler.java

License:Apache License

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

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

    // Send the demo page and favicon.ico
    if ("/".equals(req.getUri())) {
        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");
        HttpHeaders.setContentLength(res, content.readableBytes());

        sendHttpResponse(ctx, req, res);
        return;
    }
    if ("/favicon.ico".equals(req.getUri())) {
        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);
    }
}

From source file:cn.pengj.udpdemo.EchoSeverHandler.java

License:Open Source License

@Override
protected void channelRead0(ChannelHandlerContext ctx, DatagramPacket packet) throws Exception {
    // ??/* w w  w .j a  va  2 s .  c o m*/
    ByteBuf buf = (ByteBuf) packet.copy().content();
    byte[] req = new byte[buf.readableBytes()];
    buf.readBytes(req);
    String body = new String(req, CharsetUtil.UTF_8);
    System.out.println("?NOTE>>>>>> ?" + body);

    // ???
    ctx.writeAndFlush(new DatagramPacket(
            Unpooled.copiedBuffer("HelloServer" + System.currentTimeMillis(),
                    CharsetUtil.UTF_8),
            packet.sender())).sync();
}

From source file:cn.scujcc.bug.bitcoinplatformandroid.util.socket.websocket.WebSocketClientHandler.java

License:Apache License

public String decodeByteBuff(ByteBuf buf) throws IOException, DataFormatException {

    byte[] temp = new byte[buf.readableBytes()];
    ByteBufInputStream bis = new ByteBufInputStream(buf);
    bis.read(temp);//from   w  w  w  .  j a v a  2 s  .  c o  m
    bis.close();
    Inflater decompresser = new Inflater(true);
    decompresser.setInput(temp, 0, temp.length);
    StringBuilder sb = new StringBuilder();
    byte[] result = new byte[1024];
    while (!decompresser.finished()) {
        int resultLength = decompresser.inflate(result);
        sb.append(new String(result, 0, resultLength, "UTF-8"));
    }
    decompresser.end();
    return sb.toString();
}

From source file:co.rsk.net.discovery.PacketDecoder.java

License:Open Source License

@Override
public void decode(ChannelHandlerContext ctx, DatagramPacket packet, List<Object> out) throws Exception {
    ByteBuf buf = packet.content();
    byte[] encoded = new byte[buf.readableBytes()];
    buf.readBytes(encoded);//from  w  w  w  . j  av a2 s  . c om
    out.add(this.decodeMessage(ctx, encoded, packet.sender()));
}

From source file:code.google.nfs.rpc.netty.serialize.NettyProtocolDecoder.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    RecyclableArrayList out = RecyclableArrayList.newInstance();
    try {/*from  w  ww . j  a  va  2  s  .  co  m*/
        if (msg instanceof ByteBuf) {
            ByteBuf data = (ByteBuf) msg;
            if (cumulation == null) {
                cumulation = data;
                try {
                    callDecode(ctx, cumulation, out);
                } finally {
                    if (cumulation != null && !cumulation.isReadable()) {
                        cumulation.release();
                        cumulation = null;
                    }
                }
            } else {
                try {
                    if (cumulation.writerIndex() > cumulation.maxCapacity() - data.readableBytes()) {
                        ByteBuf oldCumulation = cumulation;
                        cumulation = ctx.alloc().buffer(oldCumulation.readableBytes() + data.readableBytes());
                        cumulation.writeBytes(oldCumulation);
                        oldCumulation.release();
                    }
                    cumulation.writeBytes(data);
                    callDecode(ctx, cumulation, out);
                } finally {
                    if (cumulation != null) {
                        if (!cumulation.isReadable()) {
                            cumulation.release();
                            cumulation = null;
                        } else {
                            cumulation.discardSomeReadBytes();
                        }
                    }
                    data.release();
                }
            }
        } else {
            out.add(msg);
        }
    } catch (DecoderException e) {
        throw e;
    } catch (Throwable t) {
        throw new DecoderException(t);
    } finally {
        if (out.isEmpty()) {
            decodeWasNull = true;
        }

        List<Object> results = new ArrayList<Object>();
        for (Object result : out) {
            results.add(result);
        }
        ctx.fireChannelRead(results);

        out.recycle();
    }
}

From source file:code.google.nfs.rpc.netty.serialize.NettyProtocolDecoder.java

License:Apache License

@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();/*ww w  .j  ava2s.  co m*/
        ctx.fireChannelRead(bytes);
    }
    cumulation = null;
    ctx.fireChannelReadComplete();
    handlerRemoved0(ctx);
}

From source file:code.google.nfs.rpc.netty.serialize.NettyProtocolDecoder.java

License:Apache License

/**
 * Called once data should be decoded from the given {@link ByteBuf}. This method will call
 * {@link #decode(ChannelHandlerContext, ByteBuf, List)} as long as decoding should take place.
 *
 * @param ctx           the {@link ChannelHandlerContext} which this {@link ByteToMessageDecoder} belongs to
 * @param in            the {@link ByteBuf} from which to read data
 * @param out           the {@link List} to which decoded messages should be added
 *///from w  w w .  j av a2 s  .c  o  m
protected void callDecode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
    try {
        while (in.isReadable()) {
            int outSize = out.size();
            int oldInputLength = in.readableBytes();
            decode(ctx, in, out);

            // Check if this handler was removed before try to continue the loop.
            // If it was removed it is not safe to continue to operate on the buffer
            //
            // See https://github.com/netty/netty/issues/1664
            if (ctx.isRemoved()) {
                break;
            }

            if (outSize == out.size()) {
                if (oldInputLength == in.readableBytes()) {
                    break;
                } else {
                    continue;
                }
            }

            if (oldInputLength == in.readableBytes()) {
                throw new DecoderException(StringUtil.simpleClassName(getClass())
                        + ".decode() did not read anything but decoded a message.");
            }

            if (isSingleDecode()) {
                break;
            }
        }
    } catch (DecoderException e) {
        throw e;
    } catch (Throwable cause) {
        throw new DecoderException(cause);
    }
}