Example usage for io.netty.buffer ByteBuf writerIndex

Introduction

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

Prototype

public abstract ByteBuf writerIndex(int writerIndex);

Source Link

Document

Sets the writerIndex of this buffer.

Usage

From source file:org.spongepowered.clean.network.netty.PacketDecryptor.java

License:MIT License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List<Object> out) throws Exception {
    int length = msg.readableBytes();
    if (this.dataBuffer.length < length) {
        this.dataBuffer = new byte[length];
    }//w w w  .j a va  2s  . c o  m
    msg.readBytes(this.dataBuffer, 0, length);
    ByteBuf plain = ctx.alloc().heapBuffer(this.cipher.getOutputSize(length));
    int actual = this.cipher.update(this.dataBuffer, 0, length, plain.array(), plain.arrayOffset());
    plain.writerIndex(actual);
    out.add(plain);
}

From source file:org.starnub.starbounddata.packets.Packet.java

License:Open Source License

/**
 * Recommended: For internal use with StarNub packet decoding
 * <p>/* ww  w.ja  v  a  2  s. c om*/
 * Uses: This will write a s{@link org.starnub.starbounddata.types.variants.VLQ} to a {@link io.netty.buffer.ByteBuf}
 * <p>
 * Notes: This will not create a VLQ object and should be used
 * <p>
 *
 * @param out   ByteBuf in which is to be read
 * @param value long representing the VLQ value to be written out
 */
protected static void writeSVLQPacketEncoder(ByteBuf out, long value) {
    if (value < 0) {
        value = ((-(value + 1)) << 1) | 1;
    } else {
        value = value << 1;
    }
    int numRelevantBits = 64 - Long.numberOfLeadingZeros(value);
    int numBytes = (numRelevantBits + 6) / 7;
    if (numBytes == 0) {
        numBytes = 1;
    }
    out.writerIndex(numBytes + 1); /* Sets the write index at the number of bytes + 1 byte for packet id */
    for (int i = numBytes - 1; i >= 0; i--) {
        int curByte = (int) (value & 0x7F);
        if (i != (numBytes - 1)) {
            curByte |= 0x80;
        }
        out.setByte(i + 1, curByte); /* Sets the byte at index + 1 byte for packet id */
        value >>>= 7;
    }
}

From source file:org.traccar.helper.BufferUtil.java

License:Apache License

public static int indexOf(String needle, ByteBuf haystack, int startIndex, int endIndex) {
    ByteBuf wrappedHaystack = Unpooled.wrappedBuffer(haystack);
    wrappedHaystack.readerIndex(startIndex - haystack.readerIndex());
    wrappedHaystack.writerIndex(endIndex - haystack.readerIndex());
    int result = indexOf(needle, wrappedHaystack);
    return result < 0 ? result : haystack.readerIndex() + result;
}

From source file:org.traccar.protocol.At2000FrameDecoder.java

License:Apache License

private void sendResponse(Channel channel) {
    if (channel != null) {
        ByteBuf response = Unpooled.buffer(2 * BLOCK_LENGTH);
        response.writeByte(At2000ProtocolDecoder.MSG_ACKNOWLEDGEMENT);
        response.writeMedium(1);/* w  w  w .j  av a  2s  . c o  m*/
        response.writeByte(0x00); // success
        response.writerIndex(2 * BLOCK_LENGTH);
        channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
    }
}

From source file:org.traccar.protocol.At2000ProtocolDecoder.java

License:Apache License

private static void sendRequest(Channel channel) {
    if (channel != null) {
        ByteBuf response = Unpooled.buffer(BLOCK_LENGTH);
        response.writeByte(MSG_TRACK_REQUEST);
        response.writeMedium(0);/*  w w  w  .j a v a  2  s .  c  o  m*/
        response.writerIndex(BLOCK_LENGTH);
        channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
    }
}