Currently I see methods to get the name, index, and type of nw_interface_t objects. Is there a way to get the IP addresses attached to that interface?
I tried nw_path's nw_path_copy_effective_local_endpoint inside of a nw_path_monitor callback, but it always returns null.
To be clear, there’s no such thing as a “local IP address” for an interface. An interface has a set of local IP addresses, with an arbitrary mixture of IPv4 and IPv6.
The easiest way to get that set is to call
nw_interface_get_namegetidaddrsShare and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"But can individual call via ioctl be faster?
struct sockaddr_in *addr;
struct ifreq ifr;
char *address;
int sockfd;
char *name = "en0";
if(strlen(name)>=IFNAMSIZ)
printf("device name is error.\n"),exit(0);
strcpy(ifr.ifr_name,name);
sockfd=socket(AF_INET,SOCK_DGRAM,0);
//get inet addr
if(ioctl(sockfd,SIOCGIFADDR,&ifr)<0)
printf("ioctl error!!!\n"),exit(0);
addr = (struct sockaddr_in *)&(ifr.ifr_addr);
address=inet_ntoa(addr->sin_addr);
printf("inet addr:%s\n",address);
But can individual call via
ioctlbe faster?
Why would you care about the performance of this? It’s not like you’re doing this in a tight loop, right? … Right?
Regardless, this code is wrong because it returns a single IPv4 address and, as I mentioned upthread, that’s not an accurate model of how the system works.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"