Example usage for io.netty.buffer ByteBuf isReadable

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf isReadable.

Prototype

public abstract boolean isReadable();

Source Link

Document

Returns true if and only if (this.writerIndex - this.readerIndex) is greater than 0 .

Usage

From source file:com.myftpserver.handler.ReceiveFileHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (bos == null) {
        User user = fs.getUser();/*from   w  ww.  jav  a 2s  . c  o m*/
        if (user.getUploadSpeedLitmit() == 0L)
            logger.info("File upload speed is limited by connection speed");
        else {
            ctx.channel().pipeline().addFirst("TrafficShapingHandler",
                    new ChannelTrafficShapingHandler(0L, user.getUploadSpeedLitmit() * 1024));
            logger.info("File upload speed limit:" + user.getUploadSpeedLitmit() + " kB/s");
        }
        ctx.channel().closeFuture().addListener(this);
        tempFile = File.createTempFile("temp-file-name", ".tmp");
        fs.setUploadTempFile(tempFile);
        bos = new BufferedOutputStream(new FileOutputStream(tempFile));
    }
    ByteBuf in = (ByteBuf) msg;
    //logger.debug("ReceiveFileHandler channelRead buffer capacity="+in.capacity()+",readable byte count="+in.readableBytes());
    try {
        while (in.isReadable()) {
            in.readBytes(bos, in.readableBytes());
        }
        bos.flush();
    } finally {
        in.release();
    }
}

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From source file:com.navercorp.nbasearc.gcp.RedisDecoder.java

License:Apache License

private boolean hasFrame(ByteBuf in) {
    if (in.isReadable() == false) {
        return false;
    }//from   w  ww .  j  ava  2  s . co  m

    lookasideBufferLength = Math.min(in.readableBytes(), lookasideBuffer.length);
    in.readBytes(lookasideBuffer, 0, lookasideBufferLength);
    lookasideBufferReaderIndex = 0;
    in.readerIndex(in.readerIndex() - lookasideBufferLength);

    byte b = lookasideBuffer[lookasideBufferReaderIndex++];
    in.skipBytes(1);
    if (b == MINUS_BYTE) {
        return processError(in);
    } else if (b == ASTERISK_BYTE) {
        return processMultiBulkReply(in);
    } else if (b == COLON_BYTE) {
        return processInteger(in);
    } else if (b == DOLLAR_BYTE) {
        return processBulkReply(in);
    } else if (b == PLUS_BYTE) {
        return processStatusCodeReply(in);
    } else {
        throw new JedisConnectionException("Unknown reply: " + (char) b);
    }
}

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From source file:com.netty.grpc.proxy.demo.handler.GrpcProxyFrontendHandler.java

License:Apache License

private boolean readClientPrefaceString(ByteBuf in) throws Http2Exception {
    ByteBuf clientPrefaceString = Http2CodecUtil.connectionPrefaceBuf();
    int prefaceRemaining = clientPrefaceString.readableBytes();
    int bytesRead = min(in.readableBytes(), prefaceRemaining);

    // If the input so far doesn't match the preface, break the connection.
    if (bytesRead == 0 || !ByteBufUtil.equals(in, in.readerIndex(), clientPrefaceString,
            clientPrefaceString.readerIndex(), bytesRead)) {
        String receivedBytes = hexDump(in, in.readerIndex(),
                min(in.readableBytes(), clientPrefaceString.readableBytes()));
        throw connectionError(PROTOCOL_ERROR,
                "HTTP/2 client preface string missing or corrupt. " + "Hex dump for received bytes: %s",
                receivedBytes);/*from   w  w  w  . j  av  a 2s . co  m*/
    }
    in.skipBytes(bytesRead);
    clientPrefaceString.skipBytes(bytesRead);

    if (!clientPrefaceString.isReadable()) {
        // Entire preface has been read.
        clientPrefaceString.release();
        return true;
    }
    return false;
}

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From source file:com.oskm.netty.DiscardServerHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    // TODO Auto-generated method stub
    ByteBuf in = (ByteBuf) msg;

    try {//from  w w  w . j a  v  a 2  s . co m
        while (in.isReadable()) {
            System.out.print((char) in.readByte());
            System.out.flush();
        }

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        ReferenceCountUtil.release(msg);

    }
}

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From source file:com.phei.netty.nio.http.snoop.HttpSnoopServerHandler.java

License:Apache License

@Override
protected void messageReceived(ChannelHandlerContext ctx, Object msg) {
    if (msg instanceof HttpRequest) {
        HttpRequest request = this.request = (HttpRequest) msg;

        if (HttpHeaderUtil.is100ContinueExpected(request)) {
            send100Continue(ctx);//from w ww.  j  av a 2s  .  c o  m
        }

        buf.setLength(0);
        buf.append("WELCOME TO THE WILD WILD WEB SERVER\r\n");
        buf.append("===================================\r\n");

        buf.append("VERSION: ").append(request.protocolVersion()).append("\r\n");
        buf.append("HOSTNAME: ").append(request.headers().get(HOST, "unknown")).append("\r\n");
        buf.append("REQUEST_URI: ").append(request.uri()).append("\r\n\r\n");

        HttpHeaders headers = request.headers();
        if (!headers.isEmpty()) {
            for (Entry<CharSequence, CharSequence> h : headers) {
                CharSequence key = h.getKey();
                CharSequence value = h.getValue();
                buf.append("HEADER: ").append(key).append(" = ").append(value).append("\r\n");
            }
            buf.append("\r\n");
        }

        QueryStringDecoder queryStringDecoder = new QueryStringDecoder(request.uri());
        Map<String, List<String>> params = queryStringDecoder.parameters();
        if (!params.isEmpty()) {
            for (Entry<String, List<String>> p : params.entrySet()) {
                String key = p.getKey();
                List<String> vals = p.getValue();
                for (String val : vals) {
                    buf.append("PARAM: ").append(key).append(" = ").append(val).append("\r\n");
                }
            }
            buf.append("\r\n");
        }

        appendDecoderResult(buf, request);
    }

    if (msg instanceof HttpContent) {
        HttpContent httpContent = (HttpContent) msg;

        ByteBuf content = httpContent.content();
        if (content.isReadable()) {
            buf.append("CONTENT: ");
            buf.append(content.toString(CharsetUtil.UTF_8));
            buf.append("\r\n");
            appendDecoderResult(buf, request);
        }

        if (msg instanceof LastHttpContent) {
            buf.append("END OF CONTENT\r\n");

            LastHttpContent trailer = (LastHttpContent) msg;
            if (!trailer.trailingHeaders().isEmpty()) {
                buf.append("\r\n");
                for (CharSequence name : trailer.trailingHeaders().names()) {
                    for (CharSequence value : trailer.trailingHeaders().getAll(name)) {
                        buf.append("TRAILING HEADER: ");
                        buf.append(name).append(" = ").append(value).append("\r\n");
                    }
                }
                buf.append("\r\n");
            }

            if (!writeResponse(trailer, ctx)) {
                // If keep-alive is off, close the connection once the content is fully written.
                ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
            }
        }
    }
}

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From source file:com.quavo.osrs.network.protocol.codec.connection.ConnectionDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (!in.isReadable()) {
        return;//w ww.  j a va 2  s  . c  o m
    }

    ConnectionType.getType(in.readUnsignedByte()).ifPresent(type -> out.add(new ConnectionRequest(this, type)));// id
}

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From source file:com.quavo.osrs.network.protocol.codec.game.GamePacketDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (!in.isReadable() || !player.getChannel().isRegistered()) {
        return;/*w w w  .j av  a  2 s. c  o m*/
    }
    int opcode = in.readUnsignedByte();
    Optional<PacketDecoderIdentifier> data = PacketDecoderIdentifier.getPacket(opcode);
    if (data.isPresent()) {
        PacketDecoderIdentifier packet = data.get();

        int size = packet.getSize();
        if (packet.getType() == PacketType.VARIABLE_BYTE) {
            if (in.readableBytes() < 1) {
                return;
            }
            size = in.readUnsignedByte();
        } else if (packet.getType() == PacketType.VARIABLE_SHORT) {
            if (in.readableBytes() < 2) {
                return;
            }
            size = in.readUnsignedShort();
        }

        if (in.readableBytes() >= size) {
            if (size < 0) {
                return;
            }

            byte[] bytes = new byte[size];
            in.readBytes(bytes, 0, size);
            out.add(new GamePacketRequest(this, player, packet.getId(),
                    new GamePacketReader(Unpooled.wrappedBuffer(bytes))));
        }

    } else {
        System.out.println("No data present for incoming packet: " + opcode + ".");
        in.readBytes(new byte[in.readableBytes()]);
    }
}

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From source file:com.quavo.osrs.network.protocol.codec.handshake.HandshakeDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (!in.isReadable() || in.readableBytes() < 4) {
        return;//from   w  ww  . j  a v a2s . c  o  m
    }

    out.add(new HandshakeRequest(this, in.readInt()));// version
}

---

From source file:com.quavo.osrs.network.protocol.codec.login.LoginDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (!in.isReadable() || in.readableBytes() < 8) {
        return;// w  ww  .j a  v a  2 s. c  o m
    }

    LoginType.getType(in.readByte()).filter(a -> in.readShort() == in.readableBytes())
            .ifPresent(a -> out.add(new LoginRequest(this, a, in.readInt())));
}

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From source file:com.quavo.osrs.network.protocol.codec.login.world.WorldLoginDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    if (!in.isReadable()) {
        return;/*from www  . java2  s.  c  om*/
    }

    ByteBuf buffer = ByteBufUtils.encipherRSA(in, EXPONENT, MODULUS);
    int id = buffer.readByte();
    if (id != 1) {
        return;
    }
    int clearanceId = buffer.readByte();
    int[] clientKeys = new int[4];
    for (int index = 0; index < clientKeys.length; index++) {
        clientKeys[index] = buffer.readInt();
    }
    LoginClearance clearance = LoginClearance.getType(clearanceId).get().read(buffer);
    String password = ByteBufUtils.readString(buffer);
    buffer = ByteBufUtils.decipherXTEA(in, clientKeys);
    String username = ByteBufUtils.readString(buffer);
    DisplayMode mode = DisplayMode.getDisplayMode(buffer.readByte()).get();
    int width = buffer.readShort();
    int height = buffer.readShort();
    DisplayInformation display = new DisplayInformation(mode, width, height);
    buffer.skipBytes(24);
    String token = ByteBufUtils.readString(buffer);
    buffer.readInt();
    MachineInformation machineInformation = MachineInformation.decode(buffer);
    buffer.readInt();
    buffer.readInt();
    buffer.readInt();
    buffer.readInt();
    buffer.readByte();
    int[] crc = new int[16];
    for (int index = 0; index < crc.length; index++) {
        crc[index] = buffer.readInt();
    }
    int[] serverKeys = new int[4];
    for (int index = 0; index < serverKeys.length; index++) {
        serverKeys[index] = clientKeys[index] + 50;
    }
    IsaacRandomPair isaacPair = new IsaacRandomPair(new IsaacRandom(serverKeys), new IsaacRandom(clientKeys));

    out.add(new WorldLoginRequest(this, type, username, password, clearance, display, machineInformation, crc,
            token, isaacPair));
}

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