void write_string_size(ENetPacket * packet, string & str)
{
    auto data = (char*)packet->data + packet->dataLength;

    using u16 = unsigned short;
    auto p = (u16*)data;
    *p = (u16)str.size();
    packet->dataLength += sizeof(u16);
}

void write_string_content(ENetPacket * packet, string & str)
{
    auto data = (char*)packet->data + packet->dataLength;

    memcpy(data, &str[0], str.size());
    packet->dataLength += str.size();
}

void write_string(ENetPacket * packet, string & str)
{
    write_string_size(packet, str);
    write_string_content(packet, str);
}

void example(ENetPeer * peer, vector<string> & some_strings)
{
    auto packet = enet_packet_create(nullptr, 512, ENET_PACKET_FLAG_RELIABLE);
    packet->dataLength = 0;

    //We assume the total size of all strings won't be > 512
    for(auto & str : some_strings)
    {
        write_string(packet, str);
    }
    enet_peer_send(peer, 0, packet);
}