swift

/// 获取本地IP 地址，可能是局域网的地址
    @objc public static func getIphoneIpAddress() -> String{
        var addresses = [String]()
        var ifaddr : UnsafeMutablePointer<ifaddrs>? = nil
        if getifaddrs(&ifaddr) == 0 {
            var ptr = ifaddr
            while (ptr != nil) {
                let flags = Int32(ptr!.pointee.ifa_flags)
                var addr = ptr!.pointee.ifa_addr.pointee
                if (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) {
                    if addr.sa_family == UInt8(AF_INET) || addr.sa_family == UInt8(AF_INET6) {
                        var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST))
                        if (getnameinfo(&addr, socklen_t(addr.sa_len), &hostname, socklen_t(hostname.count),nil, socklen_t(0), NI_NUMERICHOST) == 0) {
                            if let address = String(validatingUTF8:hostname) {
                                addresses.append(address)
                            }
                        }
                    }
                }
                ptr = ptr!.pointee.ifa_next
            }
            freeifaddrs(ifaddr)
        }
        return addresses.first ?? "0.0.0.0"
    }

OC

+ (NSDictionary *)getIPAddresses
{
    NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8];

    // retrieve the current interfaces - returns 0 on success
    struct ifaddrs *interfaces;
    if (!getifaddrs(&interfaces)) {
        // Loop through linked list of interfaces
        struct ifaddrs *interface;
        for (interface = interfaces; interface; interface = interface->ifa_next) {
            if (!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */) {
                continue; // deeply nested code harder to read
            }
            const struct sockaddr_in *addr = (const struct sockaddr_in *)interface->ifa_addr;
            char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ];
            if (addr && (addr->sin_family == AF_INET || addr->sin_family == AF_INET6)) {
                NSString *name = [NSString stringWithUTF8String:interface->ifa_name];
                NSString *type;
                if (addr->sin_family == AF_INET) {
                    if (inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv4;
                    }
                } else {
                    const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6 *)interface->ifa_addr;
                    if (inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv6;
                    }
                }
                if (type) {
                    NSString *key = [NSString stringWithFormat:@"%@/%@", name, type];
                    addresses[key] = [NSString stringWithUTF8String:addrBuf];
                }
            }
        }
        // Free memory
        freeifaddrs(interfaces);
    }
    return [addresses count] ? addresses : nil;
}