boost::asio over SocketCAN

I was thinking of making use of Boost Asio to read data from a SocketCAN device.

There's nothing fancy going on in linux/can.h, and the device should behave like the loopback interface, and be used with a raw socket.

Looking at the basic_raw_socket interface it seems that I can make use of basic_raw_socket::assign to assign the native socket created with:

socket(PF_CAN, SOCK_RAW, CAN_RAW);

This is what I have so far

namespace can {
       class CanSocket {
       public:
               typedef boost::asio::ip::basic_endpoint<CanSocket> endpoint;
               typedef boost::asio::ip::basic_resolver_query<CanSocket> resolver_query;
               typedef boost::asio::ip::basic_resolver_iterator<CanSocket> resolver_iterator;
               typedef boost::asio::basic_raw_socket<CanSocket> socket;
               typedef boost::asio::ip::basic_resolver<CanSocket> resolver;

               CanSocket()
                       : _protocol(CAN_RAW)
                       , _family(PF_CAN)
               {
               }

               static CanSocket v4()
               {
                       return CanSocket();
               }
               static CanSocket v6();
               int type() const;
               int protocol() const;
               int family() const;

               friend bool operator==(const CanSocket& p1, const CanSocket& p2)
               {
                       return p1._protocol != p2._protocol || p1._family != p2._family;
               }
               friend bool operator!=(const CanSocket& p1, const CanSocket& p2)
               {
                       return p1._protocol == p2._protocol || p1._family == p2._family;
               }

       private:
               int _protocol;
               int _family;
};
}

And this is how I use it in my application:

   boost::asio::io_service ioserv;

   CanSocket::socket s(ioserv);

   int sock = socket(PF_CAN, SOCK_RAW, CAN_RAW);

   s.assign(CanSocket::v4(), sock);

   struct ifreq ifr;
   strcpy(ifr.ifr_name, "vcan0");
   ioctl(sock, SIOCGIFINDEX, &ifr); /* ifr.ifr_ifindex gets filled
                                     * with that device's index */

   /* Select that CAN interface, and bind the socket to it. */

   /* This should be the endpoint */
   struct sockaddr_can addr;
   addr.can_family = AF_CAN;
   addr.can_ifindex = ifr.ifr_ifindex;

   /* s.bind (....) */
   bind(sock, (struct sockaddr*)&addr, sizeof(addr));

I don't quite get how I bind s to the local endpoint. There aren't any IP addresses or ports involved.

Is there anything else that should be implemented besides the endpoint to get it going?

The solution is to use posix::stream_descriptor.

Just open the native socket, bind and then use posix::basic_stream_descriptor::assign.