iOS get IpAddress (works with simulator/device)

iOS get IpAddress

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

#pragma mark - Get Ip Address

- (NSString *)getIpAddress
{
    NSString *address = @"error";
    struct ifaddrs *interfaces = NULL;
    struct ifaddrs *temp_addr = NULL;
    int success = 0;
    
#if TARGET_IPHONE_SIMULATOR
//#error Specify network interface for computer(iPhone simulator) below and then remove this line
    NSString *networkInterface = @"en1";
#else
    NSString *networkInterface = @"en0";
#endif
    
    // retrieve the current interfaces - returns 0 on success
    success = getifaddrs(&interfaces);
    if (success == 0) {
        // Loop through linked list of interfaces
        temp_addr = interfaces;
        while (temp_addr != NULL) {
            if( temp_addr->ifa_addr->sa_family == AF_INET) {
                // Check if interface is en0 which is the wifi connection on the iPhone
                 if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:networkInterface] ||
                    [[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"pdp_ip0"]) {
                    // Get NSString from C String
                    address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
                }
            }
            
            temp_addr = temp_addr->ifa_next;
        }
    }
    
    // Free memory
    freeifaddrs(interfaces);
    return address;
}