IOS开发之判断IPHONE连接的wifi,2,3,4G是ipv4还是ipv6网络

来源:互联网 时间:2017-01-22


可能问题太简单了,在网上没有找到答案,只好我自己写了。


由于苹果审核我们的应用在ipv6环境下,无法连接到服务器。所以把原来的用IP作为请求网址改成了域名来发请求。虽然审核过了,但是在国内还有域名解析的问题,使用域名有可能没有解析到ip地址,有可能解析的ip地址不正确(可能域名转发引起的,域名转发已经被国家禁止)。


所以我想如果手机当前连接的ipv4的网络,还用原来的ip请求。如果手机连接的是ipv6网络,则使用域名连接。


下面我对不同的设备分别使用ipv4(wifi,4G)和ipv6(wifi)网络进行测试:


 IPV4IPV6IPAD(WIFI)en0/ipv4 = 192.168.2.90,
lo0/ipv6 = fe80::1,
awdl0/ipv6 = fe80::5cbf:1aff:fe4e:ef38,
en0/ipv6 = fe80::ae:8811:f45b:198a,
lo0/ipv4 = 127.0.0.1en0/ipv4 = 169.254.229.160,
lo0/ipv6 = fe80::1,
awdl0/ipv6 = fe80::5cbf:1aff:fe4e:ef38,
en0/ipv6 = 2001:2::aab1:6005:dcd1:6ffd:63e4,
lo0/ipv4 = 127.0.0.1IPHONE6(WIFI)en0/ipv4 = 192.168.8.110,
lo0/ipv6 = fe80::1,
awdl0/ipv6 = fe80::b84d:41ff:fe6e:2925,
en0/ipv6 = fe80::435:13b1:816c:9db9,
lo0/ipv4 = 127.0.0.1en0/ipv4 = 169.254.87.24,
lo0/ipv6 = fe80::1,
awdl0/ipv6 = fe80::b84d:41ff:fe6e:2925,
en0/ipv6 = 2001:2::aab1:b19e:527a:45d3:9f,
lo0/ipv4 = 127.0.0.1IPHONE6S(WIFI)en0/ipv4 = 192.168.2.94,
lo0/ipv6 = fe80::1,
awdl0/ipv6 = fe80::a0ff:ddff:fec0:a676,
en0/ipv6 = fe80::444:d26c:1b78:8f89,
lo0/ipv4 = 127.0.0.1,
utun0/ipv6 = fe80::3213:2aa4:9fed:9339 IPHONE6PLUS
(4G)lo0/ipv6 = fe80::1,
pdp_ip0/ipv4 = 10.241.179.135,
lo0/ipv4 = 127.0.0.1,
utun0/ipv6 = fe80::e7dd:8eef:da5e:f8f7 IPHONE4(WIFI)lo0/ipv4 = 127.0.0.1,
en0/ipv4 = 192.168.2.138,
lo0/ipv6 = fe80::1,
en0/ipv6 = fe80::1420:27e5:d334:e8delo0/ipv4 = 127.0.0.1,
en0/ipv4 = 169.254.120.241,
lo0/ipv6 = fe80::1,
en0/ipv6 = 2001:2::aab1:509d:9f42:38e0:a945      

经过分析发现:

1.lo0/ipv6 = fe80::1,这个是固定的

2.lo0/ipv4 = 127.0.0.1 这个也是固定的

3.ipv6下 en0/ipv4 = 169.254.120.241,是固定的

4.ipv4下:awdl0/ipv6,en0/ipv6,utun0/ipv6对应的值都是fe80 开头


结论:在ipv6下,awdl0/ipv6,en0/ipv6,utun0/ipv6对应的值肯定有一个不是以fe80 开头

还有好多情况没有考虑eg:VPN


下面开始写代码来判断:

导入头文件和宏定义

#define IOS_CELLULAR @"pdp_ip0"#define IOS_WIFI @"en0"#define IOS_VPN @"utun0"#define IP_ADDR_IPv4 @"ipv4"#define IP_ADDR_IPv6 @"ipv6"#import <ifaddrs.h>#import <arpa/inet.h>#import <net/if.h>
添加两个方法

+ (BOOL)isIpv6{ NSArray *searchArray = @[ 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 BOOL isIpv6 = NO; [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop) { NSLog(@"---%@---%@---",key, addresses[key] ); if ([key rangeOfString:@"ipv6"].length > 0 && ![[NSString stringWithFormat:@"%@",addresses[key]] hasPrefix:@"(null)"] ) { if ( ![addresses[key] hasPrefix:@"fe80"]) { isIpv6 = YES; } } } ]; return isIpv6;}+ (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; NSLog(@"ipv4 %@",name); } } 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; NSLog(@"ipv6 %@",name); } } if(type) { NSString *key = [NSString stringWithFormat:@"%@/%@", name, type]; addresses[key] = [NSString stringWithUTF8String:addrBuf]; } } } // Free memory freeifaddrs(interfaces); } return [addresses count] ? addresses : nil;}

调用

- (void)viewDidLoad { [super viewDidLoad]; //1:是ipv6 //0:不是ipv6 NSLog(@"###-###%d",[ViewController isIpv6]); ; if ([ViewController isIpv6] == YES) { UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"提示" message:@"是ipv6" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil]; [alertView show]; }else{ UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"提示" message:@"不是ipv6" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil]; [alertView show]; } }





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