Question

asio::ip::address_v6 takes a bytes_type for a parameter, which is basically a boost::array in network-byte order.

I have a RAW IPv6 address in a void * variable. What’s the quickest way to turn a void * into a asio::ip::address_v6? Preferably using the constructor.

Answer 1

You can’t do better than initializing an asio::ip::address_v6::bytes_type, which can actually be a std::array or a boost::array:

// We need an unsigned char* pointer to the IP address
unsigned char *youraddr = reinterpret_cast<unsigned char*>(your_void_ptr);
asio::ip::address_v6::bytes_type myaddr;
// Copy the address into our array
std::copy(youraddr, youraddr + myaddr.size(), myaddr.data());
// Finally, initialize.
asio::ip::address_v6 ipv6(myaddr);

Note that it would be better to directly store a bytes_type instead of that void*, if you are able to modify that structure, obviously.