iOS 获取手机的IP地址(内网与外网)

傷城~ 2022-09-27 15:28 727阅读 0赞

**先是获取内网IP的方法：**

#import <ifaddrs.h>
    #import <arpa/inet.h>
    #import <net/if.h>
    
    #define IOS_CELLULAR    @"pdp_ip0"
    #define IOS_WIFI        @"en0"
    #define IOS_VPN         @"utun0"
    #define IP_ADDR_IPv4    @"ipv4"
    #define IP_ADDR_IPv6    @"ipv6"
    
    
    #pragma mark - 获取设备当前网络IP地址
    + (NSString *)getIPAddress:(BOOL)preferIPv4
    {
        NSArray *searchArray = preferIPv4 ?
        @[ IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] :
        @[ IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ;
    
        NSDictionary *addresses = [self getIPAddresses];
        NSLog(@"addresses: %@", addresses);
    
        __block NSString *address;
        [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)
         {
             address = addresses[key];
             //筛选出IP地址格式
             if([self isValidatIP:address]) *stop = YES;
         } ];
        return address ? address : @"0.0.0.0";
    }
    
    + (BOOL)isValidatIP:(NSString *)ipAddress {
        if (ipAddress.length == 0) {
            return NO;
        }
        NSString *urlRegEx = @"^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\."
        "([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\."
        "([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\."
        "([01]?\\d\\d?|2[0-4]\\d|25[0-5])$";
    
        NSError *error;
        NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:urlRegEx options:0 error:&error];
    
        if (regex != nil) {
            NSTextCheckingResult *firstMatch=[regex firstMatchInString:ipAddress options:0 range:NSMakeRange(0, [ipAddress length])];
    
            if (firstMatch) {
                NSRange resultRange = [firstMatch rangeAtIndex:0];
                NSString *result=[ipAddress substringWithRange:resultRange];
                //输出结果
                NSLog(@"%@",result);
                return YES;
            }
        }
        return NO;
    }
    
    + (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;
    }

**获取外网IP的方法:**

//方法一：
    NSError *error; 
    NSURL *ipURL = [NSURL URLWithString:@"http://ifconfig.me/ip"];
    NSString *ip = [NSString stringWithContentsOfURL:ipURL encoding:NSUTF8StringEncoding error:&error];
    //方法二：个人推荐用这个请求，速度比较快
    /*
    http://ipof.in/json
    http://ipof.in/xml
    http://ipof.in/txt
    If you want HTTPS you can use the same URLs with https prefix. The advantage being that even if you are on a Wifi you will get the public address.
     */
    NSError *error; 
    NSURL *ipURL = [NSURL URLWithString:@"http://ipof.in/txt"];
    NSString *ip = [NSString stringWithContentsOfURL:ipURL encoding:NSUTF8StringEncoding error:&error];