我想利用的升压短耳从读取数据的Socket CAN 。 有没有什么特别的事情是LINUX / can.h对应 ,而且该设备会表现得像loopback接口,并配有原始套接字使用。
纵观basic_raw_socket
看来我可以利用的接口basic_raw_socket ::分配到与分配产生与天然插座
socket( PF_CAN, SOCK_RAW, CAN_RAW );
这是我到目前为止
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;
};
}
这是我如何使用它在我的应用
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) );
我不太得到的是我怎么绑定 s
到本地端点? 有没有涉及到IP地址或端口。
还有什么应该除了端点得到它去实施?