Example usage for io.netty.buffer ByteBuf resetReaderIndex

Introduction

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

Prototype

public abstract ByteBuf resetReaderIndex();

Source Link

Document

Repositions the current readerIndex to the marked readerIndex in this buffer.

Usage

From source file:com.jayqqaa12.jbase.tcp.netty.code.DreamJSONDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    while (true) {

        if (in.readableBytes() <= 4) {
            break;
        }/*from w  ww .j a  va2s.  c om*/
        in.markReaderIndex();
        int length = in.readInt();
        if (length <= 0) {
            throw new Exception("a negative length occurd while decode!");
        }
        if (in.readableBytes() < length) {
            in.resetReaderIndex();
            break;
        }
        byte[] msg = new byte[length];
        in.readBytes(msg);
        out.add(new String(msg, "UTF-8"));
    }

}

---

From source file:com.king.platform.net.http.netty.response.HttpClientResponseHandler.java

License:Apache License

public void handleResponse(ChannelHandlerContext ctx, Object msg) throws Exception {
    HttpRequestContext httpRequestContext = ctx.channel().attr(HttpRequestContext.HTTP_REQUEST_ATTRIBUTE_KEY)
            .get();/*  w w w.  ja v  a 2 s .c  o m*/

    if (httpRequestContext == null) {
        logger.trace("httpRequestContext is null, msg was {}", msg);
        return;
    }

    NettyHttpClientResponse nettyHttpClientResponse = httpRequestContext.getNettyHttpClientResponse();

    RequestEventBus requestEventBus = nettyHttpClientResponse.getRequestEventBus();

    ResponseBodyConsumer responseBodyConsumer = nettyHttpClientResponse.getResponseBodyConsumer();

    try {

        if (msg instanceof HttpResponse) {
            requestEventBus.triggerEvent(Event.TOUCH);

            logger.trace("read HttpResponse");
            HttpResponse response = (HttpResponse) msg;

            HttpResponseStatus httpResponseStatus = response.getStatus();
            HttpHeaders httpHeaders = response.headers();

            nettyHttpClientResponse.setHttpResponseStatus(httpResponseStatus);
            nettyHttpClientResponse.setHttpHeaders(httpHeaders);

            requestEventBus.triggerEvent(Event.onReceivedStatus, httpResponseStatus);
            requestEventBus.triggerEvent(Event.onReceivedHeaders, httpHeaders);

            httpRequestContext.getTimeRecorder().readResponseHttpHeaders();

            if (httpRequestContext.isFollowRedirects()
                    && httpRedirector.isRedirectResponse(httpResponseStatus)) {
                httpRedirector.redirectRequest(httpRequestContext, httpHeaders);
                return;
            }

            if (response.getStatus().code() == 100) {
                requestEventBus.triggerEvent(Event.WRITE_BODY, ctx);
                return;
            }

            String contentLength = httpHeaders.get(HttpHeaders.Names.CONTENT_LENGTH);

            String contentType = httpHeaders.get(HttpHeaders.Names.CONTENT_TYPE);
            String charset = StringUtil.substringAfter(contentType, '=');
            if (charset == null) {
                charset = StandardCharsets.ISO_8859_1.name();
            }

            contentType = StringUtil.substringBefore(contentType, ';');

            if (contentLength != null) {
                long length = Long.parseLong(contentLength);
                responseBodyConsumer.onBodyStart(contentType, charset, length);
            } else {
                responseBodyConsumer.onBodyStart(contentType, charset, 0);
            }

            httpRequestContext.getTimeRecorder().responseBodyStart();

        } else if (msg instanceof HttpContent) {
            logger.trace("read HttpContent");
            requestEventBus.triggerEvent(Event.TOUCH);

            HttpResponseStatus httpResponseStatus = nettyHttpClientResponse.getHttpResponseStatus();
            HttpHeaders httpHeaders = nettyHttpClientResponse.getHttpHeaders();

            if (httpResponseStatus == null || (httpRequestContext.isFollowRedirects()
                    && httpRedirector.isRedirectResponse(httpResponseStatus))) {
                return;
            }

            if (msg == LastHttpContent.EMPTY_LAST_CONTENT
                    && nettyHttpClientResponse.getHttpResponseStatus().code() == 100) {
                logger.trace("read EMPTY_LAST_CONTENT with status code 100");
                return;
            }

            HttpContent chunk = (HttpContent) msg;

            ByteBuf content = chunk.content();

            content.resetReaderIndex();

            int readableBytes = content.readableBytes();

            if (readableBytes > 0) {
                ByteBuffer byteBuffer = content.nioBuffer();

                responseBodyConsumer.onReceivedContentPart(byteBuffer);
                requestEventBus.triggerEvent(Event.onReceivedContentPart, readableBytes, content);

            }

            content.release();

            requestEventBus.triggerEvent(Event.TOUCH);

            if (chunk instanceof LastHttpContent) {

                responseBodyConsumer.onCompletedBody();

                requestEventBus.triggerEvent(Event.onReceivedCompleted, httpResponseStatus, httpHeaders);
                httpRequestContext.getTimeRecorder().responseBodyCompleted();

                com.king.platform.net.http.HttpResponse httpResponse = new com.king.platform.net.http.HttpResponse(
                        httpResponseStatus.code(), responseBodyConsumer);

                for (Map.Entry<String, String> entry : httpHeaders.entries()) {
                    httpResponse.addHeader(entry.getKey(), entry.getValue());
                }

                requestEventBus.triggerEvent(Event.onHttpResponseDone, httpResponse);

                requestEventBus.triggerEvent(Event.COMPLETED, httpRequestContext);

            }
        }
    } catch (Throwable e) {
        requestEventBus.triggerEvent(Event.ERROR, httpRequestContext, e);
    }
}

---

From source file:com.kradac.karview.netty.MyDecoder.java

@Override
protected void decode(ChannelHandlerContext chc, ByteBuf bb, List<Object> list) throws Exception {
    if (bb.readableBytes() < 2) {
        return;/*  www .java2  s  . com*/
    }
    bb.markReaderIndex();
    int length = bb.readChar();
    if (length > 150) {
        String data = "";
        while (bb.isReadable()) {
            data += (char) bb.readByte();
        }
        bb.clear();
        if (data.contains("OK") || data.contains("handshake")) {
            if (data.contains("handshake")) {
                chc.channel().write("0%%at");
            }
            if (data.contains("OK")) {
                System.out.println("Respuesta de Comando AT [" + data + "]");
            }
        } else {
            System.err.println("Datos incorrectos enviados al Servidor [" + data + "]");
            chc.channel().disconnect();
        }
    }
    if (bb.readableBytes() < length - 2) {
        bb.resetReaderIndex();
        return;
    }
    in.writeBytes(bb);//Escribimos los bytes
    in.discardReadBytes();//
    in.retain();
    list.add(in);
    bb.clear();//vaciamos el byteBuf
}

---

From source file:com.l2jmobius.commons.network.codecs.CryptCodec.java

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) {
    // Check if there are any data to encrypt.
    if (!msg.isReadable()) {
        return;/*  w ww .  ja v a2s.c om*/
    }

    msg.resetReaderIndex();
    _crypt.encrypt(msg);
    msg.resetReaderIndex();
    out.writeBytes(msg);
}

---

From source file:com.l2jmobius.commons.network.codecs.CryptCodec.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
    in.resetReaderIndex();
    _crypt.decrypt(in);/*from  w  ww  . j ava  2  s.  c o  m*/
    in.readerIndex(in.writerIndex());
    out.add(in.copy(0, in.writerIndex()));
}

---

From source file:com.lambdaworks.redis.protocol.CommandArgs.java

License:Apache License

@Override
public String toString() {

    final StringBuilder sb = new StringBuilder();
    sb.append(getClass().getSimpleName());

    ByteBuf buffer = UnpooledByteBufAllocator.DEFAULT.buffer(singularArguments.size() * 10);
    encode(buffer);//from   w ww. j a  v a2  s .  c o m
    buffer.resetReaderIndex();

    byte[] bytes = new byte[buffer.readableBytes()];
    buffer.readBytes(bytes);
    sb.append(" [buffer=").append(new String(bytes));
    sb.append(']');
    buffer.release();

    return sb.toString();
}

---

From source file:com.linecorp.armeria.client.endpoint.dns.DnsServiceEndpointGroup.java

License:Apache License

@Override
ImmutableSortedSet<Endpoint> onDnsRecords(List<DnsRecord> records, int ttl) throws Exception {
    final ImmutableSortedSet.Builder<Endpoint> builder = ImmutableSortedSet.naturalOrder();
    for (DnsRecord r : records) {
        if (!(r instanceof DnsRawRecord) || r.type() != DnsRecordType.SRV) {
            continue;
        }//from w  ww  . j  av  a2s. c  o  m

        final ByteBuf content = ((ByteBufHolder) r).content();
        if (content.readableBytes() <= 6) { // Too few bytes
            warnInvalidRecord(DnsRecordType.SRV, content);
            continue;
        }

        content.markReaderIndex();
        content.skipBytes(2); // priority unused
        final int weight = content.readUnsignedShort();
        final int port = content.readUnsignedShort();

        final Endpoint endpoint;
        try {
            final String target = stripTrailingDot(DefaultDnsRecordDecoder.decodeName(content));
            endpoint = port > 0 ? Endpoint.of(target, port) : Endpoint.of(target);
        } catch (Exception e) {
            content.resetReaderIndex();
            warnInvalidRecord(DnsRecordType.SRV, content);
            continue;
        }

        builder.add(endpoint.withWeight(weight));
    }

    final ImmutableSortedSet<Endpoint> endpoints = builder.build();
    if (logger().isDebugEnabled()) {
        logger().debug("{} Resolved: {} (TTL: {})", logPrefix(),
                endpoints.stream().map(e -> e.authority() + '/' + e.weight()).collect(Collectors.joining(", ")),
                ttl);
    }

    return endpoints;
}

---

From source file:com.linecorp.armeria.client.endpoint.dns.DnsTextEndpointGroup.java

License:Apache License

@Override
ImmutableSortedSet<Endpoint> onDnsRecords(List<DnsRecord> records, int ttl) throws Exception {
    final ImmutableSortedSet.Builder<Endpoint> builder = ImmutableSortedSet.naturalOrder();
    for (DnsRecord r : records) {
        if (!(r instanceof DnsRawRecord) || r.type() != DnsRecordType.TXT) {
            continue;
        }//from   www . j a v  a  2s  .  co m

        final ByteBuf content = ((ByteBufHolder) r).content();
        if (!content.isReadable()) { // Missing length octet
            warnInvalidRecord(DnsRecordType.TXT, content);
            continue;
        }

        content.markReaderIndex();
        final int txtLen = content.readUnsignedByte();
        if (txtLen == 0) { // Empty content
            continue;
        }

        if (content.readableBytes() != txtLen) { // Mismatching number of octets
            content.resetReaderIndex();
            warnInvalidRecord(DnsRecordType.TXT, content);
            continue;
        }

        final byte[] txt = new byte[txtLen];
        content.readBytes(txt);

        final Endpoint endpoint;
        try {
            endpoint = mapping.apply(txt);
        } catch (Exception e) {
            content.resetReaderIndex();
            warnInvalidRecord(DnsRecordType.TXT, content);
            continue;
        }

        if (endpoint != null) {
            if (endpoint.isGroup()) {
                logger().warn("{} Ignoring group endpoint: {}", logPrefix(), endpoint);
            } else {
                builder.add(endpoint);
            }
        }
    }

    final ImmutableSortedSet<Endpoint> endpoints = builder.build();
    if (logger().isDebugEnabled()) {
        logger().debug("{} Resolved: {} (TTL: {})", logPrefix(),
                endpoints.stream().map(Object::toString).collect(Collectors.joining(", ")), ttl);
    }

    return endpoints;
}

---

From source file:com.mastfrog.acteur.ContentConverter.java

License:Open Source License

public String toString(ByteBuf content, Charset encoding) throws IOException {
    String result;/*from w w w . j av  a2 s. com*/
    try (ByteBufInputStream in = new ByteBufInputStream(content)) {
        result = Streams.readString(in, encoding.toString());
    } finally {
        content.resetReaderIndex();
    }
    if (result.length() > 0 && result.charAt(0) == '"') {
        result = result.substring(1);
    }
    if (result.length() > 1 && result.charAt(result.length() - 1) == '"') {
        result = result.substring(0, result.length() - 2);
    }
    return result;
}

---

From source file:com.mastfrog.acteur.ContentConverter.java

License:Open Source License

protected <T> T readObject(ByteBuf buf, MediaType mimeType, Class<T> type)
        throws IOException, InvalidInputException {
    if (type == String.class || type == CharSequence.class) {
        return type.cast(toString(buf, findCharset(mimeType)));
    }/*from w  ww .j  av  a 2  s.  c o m*/
    Origin origin = type.getAnnotation(Origin.class);
    if (origin != null) {
        Map map;
        try (InputStream in = new ByteBufInputStream(buf)) {
            map = codec.readValue(in, Map.class);
            validate(origin, map).throwIfFatalPresent();
        } catch (IOException ioe) {
            ioe.printStackTrace();
            throw ioe;
        } finally {
            buf.resetReaderIndex();
        }
    }
    buf.resetReaderIndex();
    try (InputStream in = new ByteBufInputStream(buf)) {
        T result = codec.readValue(in, type);
        return result;
    } catch (IOException ioe) {
        ioe.printStackTrace();
        throw ioe;
    } finally {
        buf.resetReaderIndex();
    }
}

---

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