Protobuff transmission using cPacket and request

[il3241ya]

Hi!

Could you suggest a solution to the problem:

I need to transfer the protobuff between nodes. I use cPacket and request for this. Before transferring, I serialize the protobuff, after which I need to apply a conversion to const char* to it, which could make it the value of the cPacket Name field.

But this causes a problem related to the fact that after converting back to a string of bits, the protobuff cannot be deserialized back. As I understand it, this is due to the fact that when serializing the protobuff, the output is a string of bits, the structure of which breaks when using const char*. But are there any other ways to pass the protobuff without errors? (.c_str() to the serialized string does not work either)

The code where serialization and placement in cPacket

std::string serialized_string;
if (!opencda_message.SerializeToString(&serialized_string)){
    EV_INFO << "Failed to serialize " << std::endl;
    throw cRuntimeError("Error while serializing file");
}

size_t buffer_size = serialized_string.size() + 1;
char* buffer = new char[buffer_size];

std::copy(serialized_string.begin(), serialized_string.end(), buffer);
buffer[serialized_string.size()] = '\0';

cPacket *packet = new cPacket(buffer);
packet->setByteLength(1024);

request(req, packet, network.get());

Thanks in advance for the answer!