void NodeList::sendDSPathQuery(const QString& newPath) {
// only send a path query if we know who our DS is or is going to be
if (_domainHandler.isSocketKnown()) {
// construct the path query packet
auto pathQueryPacket = NLPacket::create(PacketType::DomainServerPathQuery);
// get the UTF8 representation of path query
QByteArray pathQueryUTF8 = newPath.toUtf8();
// get the size of the UTF8 representation of the desired path
quint16 numPathBytes = pathQueryUTF8.size();
if (numPathBytes + ((qint16) sizeof(numPathBytes)) < pathQueryPacket->bytesAvailableForWrite()) {
// append the size of the path to the query packet
pathQueryPacket->writePrimitive(numPathBytes);
// append the path itself to the query packet
pathQueryPacket->write(pathQueryUTF8);
qCDebug(networking) << "Sending a path query packet for path" << newPath << "to domain-server at"
<< _domainHandler.getSockAddr();
// send off the path query
sendPacket(std::move(pathQueryPacket), _domainHandler.getSockAddr());
} else {
qCDebug(networking) << "Path" << newPath << "would make PacketType::DomainServerPathQuery packet > MAX_PACKET_SIZE." <<
"Will not send query.";
}
}
}
qint64 Packet::writeData(const char* data, qint64 maxSize) {
// make sure we have the space required to write this block
if (maxSize <= bytesAvailableForWrite()) {
qint64 currentPos = pos();
Q_ASSERT(currentPos < _payloadCapacity);
// good to go - write the data
memcpy(_payloadStart + currentPos, data, maxSize);
// keep track of _payloadSize so we can just write the actual data when packet is about to be sent
_payloadSize = std::max(currentPos + maxSize, _payloadSize);
// return the number of bytes written
return maxSize;
} else {
// not enough space left for this write - return an error
return PACKET_WRITE_ERROR;
}
}
