[IOS 开发] 获取局域网IP

头文件

#include <arpa/inet.h>
#include <net/if.h>
#include <ifaddrs.h>

源码

- (NSString *)localIPAddress
{
NSString *localIP = nil;
struct ifaddrs *addrs;
if (getifaddrs(&addrs)==0) {
const struct ifaddrs *cursor = addrs;
while (cursor != NULL) {
if (cursor->ifa_addr->sa_family == AF_INET && (cursor->ifa_flags & IFF_LOOPBACK) == 0)
{
//NSString *name = [NSString stringWithUTF8String:cursor->ifa_name];
//if ([name isEqualToString:@"en0"]) // Wi-Fi adapter
{
localIP = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)cursor->ifa_addr)->sin_addr)];
break;
}
}
cursor = cursor->ifa_next;
}
freeifaddrs(addrs);
}
return localIP;
}