Example usage for io.netty.buffer ByteBuf clear

Introduction

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

Prototype

public abstract ByteBuf clear();

Source Link

Document

Sets the readerIndex and writerIndex of this buffer to 0 .

Usage

From source file:com.heliosapm.webrpc.serialization.JSONChannelBufferSerializer.java

License:Apache License

/**
 * {@inheritDoc}//from  w w  w . j av a 2 s  . com
 * @see com.fasterxml.jackson.databind.JsonSerializer#serialize(java.lang.Object, com.fasterxml.jackson.core.JsonGenerator, com.fasterxml.jackson.databind.SerializerProvider)
 * FIXME: Need a way to stream the data in the ChannelBuffer as converting to a byte[] or String will scorch heap usage.
 */
@Override
public void serialize(Object value, JsonGenerator jgen, SerializerProvider provider)
        throws IOException, JsonProcessingException {
    if (value instanceof ByteBuf) {
        ByteBuf buff = (ByteBuf) value;
        //System.err.println(buff.toString(UTF8_CHARSET));         
        jgen.writeString(buff.toString(UTF8_CHARSET));
        buff.clear();
    } else {
        provider.defaultSerializeValue(value, jgen);
    }
}

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From source file:com.hzmsc.scada.Jmtis.server.PortUnificationServerHandler.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    System.out.println(in.getUnsignedByte(in.readerIndex()) + "..........................");
    // Will use the first five bytes to detect a protocol.
    if (in.readableBytes() < 5) {
        return;//  w ww.  jav a  2 s .  c o  m
    }

    if (isSsl(in)) {
        enableSsl(ctx);
    } else {
        final int magic1 = in.getUnsignedByte(in.readerIndex());
        final int magic2 = in.getUnsignedByte(in.readerIndex() + 1);
        if (isGzip(magic1, magic2)) {
            enableGzip(ctx);
        } else if (isHttp(magic1, magic2)) {
            switchToHttp(ctx);
        } else if (isJMAC(magic1, magic2)) {
            switchToJMAC(ctx);
        } else {
            // Unknown protocol; discard everything and close the connection.
            in.clear();
            ctx.close();
        }
    }
}

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

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    this.c = ctx.channel();
    ByteBuf buf = (ByteBuf) msg;
    String auxdata = "";
    while (buf.isReadable()) {
        byte aux = buf.readByte();
        char charVal = (char) aux;
        int valEnt = charVal;
        if (valEnt < 10) {
            auxdata += valEnt;//  www  .j av  a2s  .  com
        } else if (valEnt == 10 || valEnt == 13) {
            auxdata += "@";
        } else {
            auxdata += charVal;
        }
    }
    this.data = auxdata;
    buf.clear();
    System.out.println("Trama que llega: " + this.data);
    if (this.data.indexOf("0@80") == 0) {
        System.out.println("Trama SKP+ +param: [" + auxdata + "]");
        u.sendToFile(3, "skp+", this.data);
        tramaMinuto(this.data.substring(5));
    } else if (this.data.indexOf("0@8000001") == 0) {
        System.out.println("Trama Conexin SKP+: [" + auxdata + "]");
        u.sendToFile(2, "skp+", this.data);
        tramaConecxion(u.clearDataConnection(this.data));
        tipoEquipoGPRS = 1;
    } else if (this.data.indexOf("0@80") == 0) {
        System.out.println("Trama Conexin SKP: [" + auxdata + "]");
        u.sendToFile(2, "skp", this.data);
        tramaConecxion(u.clearDataConnection(this.data));
        tipoEquipoGPRS = 2;
    } else if (this.data.indexOf("0150") == 0) {
        u.sendToFile(5, "skp", data);
        if (registered) {
            System.out.println(
                    "Respuesta Comando [5] [" + data + "], Equipo: [" + v.getIdEquipo().getEquipo() + "]");
            processResponseComand(this.data.substring(5));
        } else {
            System.out.println("Respuesta Comando [5] [" + data + "], Equipo: [Desconocido]");
            System.out.println(
                    "Dato Enviado a Tabla de Invalidos por no estar registrado en el sistema [Desconocido].");
            dijc.create(new DatoInvalidos(3, new Date(), e.getEquipo(), this.data));
        }
        //            System.out.println("Respuesta Cmd: [" + auxdata + "]");
        //            processResponseComand(this.data.substring(5));
    } else if (this.data.indexOf("0420") == 0) {
        System.out.println("Trama SKP: [" + data + "]");
        u.sendToFile(3, "skp", this.data);
        procesarSKP(this.data.substring(5));
    } else if (this.data.indexOf("0@8 488") == 0) { // 0@8 488 
        System.out.println("Trama SKP+ -param: [" + auxdata + "]");
        u.sendToFile(3, "skp", this.data);
        tramaMinuto(this.data.substring(9));
    } else {
        if (this.data.indexOf("0@80") == 0) {
            System.out.println("Aqui");
        } else if (this.data.indexOf("0@80") == 0) {

        } else if (this.data.indexOf("0 @80") == 0) {
            System.err.println("Trama sin Procesar: [" + auxdata + "]");
            if (registered) {
                dijc.create(new DatoInvalidos(1, new Date(), e.getEquipo(), this.data));
                System.out.println("entra aqui 1");
            } else {
                System.out.println("entra aqui 2");
                dijc.create(new DatoInvalidos(1, new Date(), "", this.data));
            }
        }
    }
}

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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;/*from   w  w  w. j  ava  2 s  .c  o m*/
    }
    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
}

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

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, IOutgoingPacket packet, ByteBuf out) {
    if (out.order() != _byteOrder) {
        out = out.order(_byteOrder);//from w w w.  j  ava  2s  .  c o m
    }

    try {
        if (packet.write(new PacketWriter(out))) {
            if (out.writerIndex() > _maxPacketSize) {
                throw new IllegalStateException("Packet (" + packet + ") size (" + out.writerIndex()
                        + ") is bigger than the limit (" + _maxPacketSize + ")");
            }
        } else {
            // Avoid sending the packet
            out.clear();
        }
    } catch (Throwable e) {
        LOGGER.log(Level.WARNING, "Failed sending Packet(" + packet + ")", e);
        // Avoid sending the packet if some exception happened
        out.clear();
    }
}

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From source file:com.lambdaworks.redis.codec.StringCodec.java

License:Apache License

/**
 * Compatibility implementation.//from  www.  j  av a  2  s . c o m
 * 
 * @param key
 * @return
 */
private ByteBuffer encodeAndAllocateBuffer(String key) {
    if (key == null) {
        return ByteBuffer.wrap(EMPTY);
    }

    CharsetEncoder encoder = CharsetUtil.encoder(charset);
    ByteBuffer buffer = ByteBuffer.allocate((int) (encoder.maxBytesPerChar() * key.length()));

    ByteBuf byteBuf = Unpooled.wrappedBuffer(buffer);
    byteBuf.clear();
    encode(key, byteBuf);
    buffer.limit(byteBuf.writerIndex());

    return buffer;
}

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From source file:com.spotify.ffwd.protobuf.ProtobufDecoder.java

License:Apache License

private void decodeOne(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    final int version = (int) in.getUnsignedInt(0);
    final long totalLength = in.getUnsignedInt(4);

    if (totalLength > MAX_FRAME_SIZE) {
        log.error("Received frame with length (" + totalLength + ") larger than maximum allowed ( "
                + MAX_FRAME_SIZE + ")");
        in.clear();
        return;//from   w  w  w . j a v  a  2 s.c o  m
    }

    // datagram underflow
    if (in.readableBytes() < totalLength) {
        log.error("Received frame of shorter length (" + in.readableBytes() + ") than reported (" + totalLength
                + ")");
        in.clear();
        return;
    }

    in.skipBytes(8);

    final Object frame;

    switch (version) {
    case 0:
        frame = decodeFrame0(in);
        break;
    default:
        throw new IllegalArgumentException("Unsupported protocol version: " + version);
    }

    if (frame != null) {
        out.add(frame);
    }
}

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From source file:com.tesora.dve.db.mysql.DBTypeBasedUtilsTest.java

License:Open Source License

@Test
public void mysqlReadWriteTest() throws Exception {
    ByteBuf cb = Unpooled.buffer(100).order(ByteOrder.LITTLE_ENDIAN);

    int len;/*from w  w  w. j a va  2 s  .c om*/
    for (Pair<MyFieldType, Object> expValue : expValuesMysql) {
        cb.clear();
        len = 0;
        if (expValue.getSecond() instanceof Byte)
            len = 1;
        DataTypeValueFunc dtvf = DBTypeBasedUtils.getMysqlTypeFunc(expValue.getFirst(), len, 0);
        dtvf.writeObject(cb, expValue.getSecond());
        assertEqualData(expValue.getSecond(), dtvf.readObject(cb));
    }
}

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From source file:com.tesora.dve.db.mysql.DBTypeBasedUtilsTest.java

License:Open Source License

@Test
public void sqlReadWriteTest() throws Exception {
    ByteBuf cb = Unpooled.buffer(100).order(ByteOrder.LITTLE_ENDIAN);

    for (Pair<Integer, Object> expValue : expValuesSQL) {
        cb.clear();
        DataTypeValueFunc dtvf = DBTypeBasedUtils.getSQLTypeFunc(expValue.getFirst());
        dtvf.writeObject(cb, expValue.getSecond());
        assertEqualData(expValue.getSecond(), dtvf.readObject(cb));
    }/*from w  ww . java  2s  .  com*/
}

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From source file:com.vethrfolnir.game.network.mu.crypt.MuCryptUtils.java

License:Open Source License

public static final long readRing(ByteBuf converter, short[] shift) {
    for (int i = 0; i < shift.length; i++) {
        converter.writeByte(shift[i]);//from  w  ww .  j  a va2  s .c o m
    }

    long uInt = converter.readInt();
    converter.clear();
    return uInt;
}

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