List of usage examples for io.netty.buffer CompositeByteBuf order
@Override
public ByteBuf order(ByteOrder endianness)
From source file:com.digitalpetri.opcua.stack.core.channel.ChunkDecoder.java
License:Apache License
private ByteBuf decode(Delegate delegate, SecureChannel channel, List<ByteBuf> chunkBuffers) throws UaException { CompositeByteBuf composite = BufferUtil.compositeBuffer(); int signatureSize = delegate.getSignatureSize(channel); int cipherTextBlockSize = delegate.getCipherTextBlockSize(channel); boolean encrypted = delegate.isEncryptionEnabled(channel); boolean signed = delegate.isSigningEnabled(channel); for (ByteBuf chunkBuffer : chunkBuffers) { char chunkType = (char) chunkBuffer.getByte(3); chunkBuffer.skipBytes(SecureMessageHeader.SECURE_MESSAGE_HEADER_SIZE); delegate.readSecurityHeader(channel, chunkBuffer); if (encrypted) { decryptChunk(delegate, channel, chunkBuffer); }//from w w w . j a v a 2s.c o m int encryptedStart = chunkBuffer.readerIndex(); chunkBuffer.readerIndex(0); if (signed) { delegate.verifyChunk(channel, chunkBuffer); } int paddingSize = encrypted ? getPaddingSize(cipherTextBlockSize, signatureSize, chunkBuffer) : 0; int bodyEnd = chunkBuffer.readableBytes() - signatureSize - paddingSize; chunkBuffer.readerIndex(encryptedStart); SequenceHeader sequenceHeader = SequenceHeader.decode(chunkBuffer); long sequenceNumber = sequenceHeader.getSequenceNumber(); lastRequestId = sequenceHeader.getRequestId(); if (lastSequenceNumber == -1) { lastSequenceNumber = sequenceNumber; } else { if (lastSequenceNumber + 1 != sequenceNumber) { String message = String.format("expected sequence number %s but received %s", lastSequenceNumber + 1, sequenceNumber); logger.error(message); logger.error(ByteBufUtil.hexDump(chunkBuffer, 0, chunkBuffer.writerIndex())); throw new UaException(StatusCodes.Bad_SecurityChecksFailed, message); } lastSequenceNumber = sequenceNumber; } ByteBuf bodyBuffer = chunkBuffer.readSlice(bodyEnd - chunkBuffer.readerIndex()); if (chunkType == 'A') { ErrorMessage errorMessage = ErrorMessage.decode(bodyBuffer); throw new MessageAbortedException(errorMessage.getError(), errorMessage.getReason()); } composite.addComponent(bodyBuffer); composite.writerIndex(composite.writerIndex() + bodyBuffer.readableBytes()); } return composite.order(ByteOrder.LITTLE_ENDIAN); }