iOS獲取設備內存、IP、系統型號、APP版本號、電池電量等

在下只是搬運工,對網絡上的方法進行了整理寫進了一個文件,看得上的就拿去用吧。

//
//  SystemRelated.h
//  CustomProject
//
//  Created by FengYiHao on 2017/7/19.
//  Copyright ? 2017年 FengYiHao. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface SystemRelated : NSObject

/** getDeviceInfo
 *
 *  TODO:獲取設備信息包括手機型號IP等等
 *
 */
+ (NSString *)getDeviceInfo;


/** getMemoryAbout
 *
 *  TODO:獲取設備內存相信息
 *
 */
+ (NSString *)getMemoryAbout;

/** getUsedMemory
 *
 *  TODO:獲取已使用內存大小
 *
 */
+ (double)getUsedMemory;

/** getFreeMemory
 *
 *  TODO:獲取空閑內存大小
 *
 */
+ (double)getFreeMemory;

/** getBatteryLevel
 *
 *  獲取電池電量
 *
 */
+ (double)getBatteryLevel;

/** getMacAddress
 *
 *  TODO:獲取設備Mac地址
 *
 */
+ (NSString *)getMacAddress;


/** appVersion
 *
 *  TODO:獲取App版本
 *
 */
+ (NSString *)appVersion;


/** iphoneSystemName
 *
 *  TODO:獲取手機系統
 *
 */
+ (NSString *)iphoneSystemName;


/** iphoneSystemVersion
 *
 *  TODO:手機系統版本
 *
 */
+ (NSString *)iphoneSystemVersion;

/** getDeviceName
 *
 *  TODO:獲取設備型號然后手動轉化為對應名稱
 *
 */
+ (NSString *)getDeviceName;

/** getUUID
 *
 *  TODO:獲取設備惟一標示符
 *
 */
- (NSString *)getUUID;

/** getIPAddress
 *
 *  TODO:獲取IP
 *
 */
+ (NSString *)getIPAddress:(BOOL)preferIPv4;

/** getIPAddressWithWAN
 *
 *  TODO:獲取外網IP
 *
 */
+ (NSString *)getIPAddressWithWAN;

/** isValidatIP
 *
 *  TODO:IP驗證
 *
 */
+ (BOOL)isValidatIP:(NSString *)ipAddress;

/** getIPAddresses
 *
 *  TODO:獲取IP相關信息
 *
 */
+ (NSDictionary *)getIPAddresses;


@end
//
//  SystemRelated.m
//  CustomProject
//
//  Created by FengYiHao on 2017/7/19.
//  Copyright ? 2017年 FengYiHao. All rights reserved.
//

#import "SystemRelated.h"
#import <mach/mach.h>
#import <sys/utsname.h>
#import <AdSupport/AdSupport.h>
#import <sys/sockio.h>
#import <sys/ioctl.h>
#include <sys/socket.h> // Per msqr
#include <sys/sysctl.h>
#include <net/if_dl.h>
#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"


@implementation SystemRelated

+ (NSString *)getMemoryAbout{
    
    vm_statistics_data_t vmstat;
    
    return [NSString stringWithFormat:@"\nfree(空閑): %0.1fM\nactive(已使用,可分頁): %0.1fM\ninactive(不活躍): %0.1fM\nwire(已使用,不可分頁): %0.1fM\nzero fill: %0.1f\nreactivations: %0.1f\npageins: %0.1f\npageouts: %0.1f\nfaults:%0.1f\ncow_faults: %0.1f\nlookups: %0.1f\nhits: %0.1f\n注:在iOS中,只有在磁盤上靜態存在的才能被分頁,例如文件的內存映射,而動態分配的內存是不能被分頁的",
            vmstat.free_count * vm_page_size/1024.0/1024.0,
            vmstat.active_count * vm_page_size/1024.0/1024.0,
            vmstat.inactive_count * vm_page_size/1024.0/1024.0,
            vmstat.wire_count * vm_page_size/1024.0/1024.0,
            vmstat.zero_fill_count * vm_page_size,
            vmstat.reactivations * vm_page_size,
            vmstat.pageins * vm_page_size,
            vmstat.pageouts * vm_page_size,
            vmstat.faults,
            vmstat.cow_faults,
            vmstat.lookups,
            vmstat.hits];
}

/** getUsedMemory
 *
 *  獲取已使用內存大小
 *
 */
+ (double)getUsedMemory{
    task_basic_info_data_t info;
    mach_msg_type_number_t size = sizeof(info);
    kern_return_t kerr = task_info(mach_task_self(),TASK_BASIC_INFO,(task_info_t) &info, &size);
    return (kerr == KERN_SUCCESS) ? info.resident_size/1024/1024 : 0;
}

/** getFreeMemory
 *
 *  獲取空余內存大小
 *
 */
+ (double)getFreeMemory{
    mach_port_t host = mach_host_self();
    mach_msg_type_number_t size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    vm_size_t pagesize;
    vm_statistics_data_t vmstat;
    host_page_size(host, &pagesize);
    host_statistics(host, HOST_VM_INFO, (host_info_t) &vmstat, &size);
    return vmstat.free_count * pagesize/1024.0/1024.0;
}


/** getBatteryLevel
 *
 *  獲取電池電量
 *
 */
+ (double)getBatteryLevel{
    [[UIDevice currentDevice] setBatteryMonitoringEnabled:YES];
    UIDevice *myDevice = [UIDevice currentDevice];
    
    [myDevice setBatteryMonitoringEnabled:YES];
    double batteryLevel = (float)[myDevice batteryLevel];
    return batteryLevel;
}


/** appVersion
 *
 *  獲取App版本
 *
 */
+ (NSString *)appVersion{
    NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
    CFShow((__bridge CFTypeRef)(infoDictionary));
    return [infoDictionary objectForKey:@"CFBundleShortVersionString"];
}

/** iphoneSystemName
 *
 *  獲取手機系統
 *
 */
+ (NSString *)iphoneSystemName{
    return [[UIDevice currentDevice] systemName];
}


/** iphoneSystemVersion
 *
 *  手機系統版本
 *
 */
+ (NSString *)iphoneSystemVersion{
    return [[UIDevice currentDevice] systemVersion];
}



// Return the local MAC addy
// Courtesy of FreeBSD hackers email list
// Accidentally munged during previous update. Fixed thanks to mlamb.
+ (NSString *)getMacAddress{
    int mib[6];
    size_t len;
    char *buf;
    unsigned char *ptr;
    struct if_msghdr *ifm;
    struct sockaddr_dl *sdl;
    
    mib[0] = CTL_NET;
    mib[1] = AF_ROUTE;
    mib[2] = 0;
    mib[3] = AF_LINK;
    mib[4] = NET_RT_IFLIST;
    
    if ((mib[5] = if_nametoindex("en0")) == 0) {
        printf("Error: if_nametoindex error/n");
        return NULL;
    }
    
    if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 1/n");
        return NULL;
    }
    
    if ((buf = malloc(len)) == NULL) {
        printf("Could not allocate memory. error!/n");
        return NULL;
    }
    
    if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 2");
        return NULL;
    }
    
    ifm = (struct if_msghdr *)buf;
    sdl = (struct sockaddr_dl *)(ifm + 1);
    ptr = (unsigned char *)LLADDR(sdl);
    
    NSString *outstring = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    free(buf);
    
    return [outstring uppercaseString];
}

/** iphoneType
 *
 *  獲取設備型號然后手動轉化為對應名稱
 *
 */
+ (NSString *)getDeviceName
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    
    if ([deviceString isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,2"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,3"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
    if ([deviceString isEqualToString:@"iPhone5,1"])    return @"iPhone 5";
    if ([deviceString isEqualToString:@"iPhone5,2"])    return @"iPhone 5 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (GSM)";
    if ([deviceString isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (GSM)";
    if ([deviceString isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([deviceString isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    if ([deviceString isEqualToString:@"iPhone8,1"])    return @"iPhone 6s";
    if ([deviceString isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus";
    if ([deviceString isEqualToString:@"iPhone8,4"])    return @"iPhone SE";
    // 日行兩款手機型號均為日本獨占,可能使用索尼FeliCa支付方案而不是蘋果支付
    if ([deviceString isEqualToString:@"iPhone9,1"])    return @"國行、日版、港行iPhone 7";
    if ([deviceString isEqualToString:@"iPhone9,2"])    return @"港行、國行iPhone 7 Plus";
    if ([deviceString isEqualToString:@"iPhone9,3"])    return @"美版、臺版iPhone 7";
    if ([deviceString isEqualToString:@"iPhone9,4"])    return @"美版、臺版iPhone 7 Plus";
    if ([deviceString isEqualToString:@"iPhone10,1"])   return @"iPhone 8";
    if ([deviceString isEqualToString:@"iPhone10,4"])   return @"iPhone 8";
    if ([deviceString isEqualToString:@"iPhone10,2"])   return @"iPhone 8 Plus";
    if ([deviceString isEqualToString:@"iPhone10,5"])   return @"iPhone 8 Plus";
    if ([deviceString isEqualToString:@"iPhone10,3"])   return @"iPhone X";
    if ([deviceString isEqualToString:@"iPhone10,6"])   return @"iPhone X";
    if ([deviceString isEqualToString:@"iPhone11,2"])   return @"iPhone XS";
    if ([deviceString isEqualToString:@"iPhone11,4"])   return @"iPhone XS Max China";
    if ([deviceString isEqualToString:@"iPhone11,6"])   return @"iPhone XS Max";
    if ([deviceString isEqualToString:@"iPhone11,8"])   return @"iPhone XR";
    if ([deviceString isEqualToString:@"iPhone12,1"])   return @"iPhone 11";
    if ([deviceString isEqualToString:@"iPhone12,2"])   return @"iPhone 11 pro";
    if ([deviceString isEqualToString:@"iPhone12,5"])   return @"iPhone 11 pro Max";
    if ([deviceString isEqualToString:@"iPhone13,1"])   return @"iPhone 12 mini";
    if ([deviceString isEqualToString:@"iPhone13,2"])   return @"iPhone 12";
    if ([deviceString isEqualToString:@"iPhone13,3"])   return @"iPhone 12 Pro";
    if ([deviceString isEqualToString:@"iPhone13,4"])   return @"iPhone 12 Pro Max";
    
    if ([deviceString isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
    if ([deviceString isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
    if ([deviceString isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
    if ([deviceString isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
    if ([deviceString isEqualToString:@"iPod5,1"])      return @"iPod Touch (5 Gen)";
    
    if ([deviceString isEqualToString:@"iPad1,1"])      return @"iPad";
    if ([deviceString isEqualToString:@"iPad1,2"])      return @"iPad 3G";
    if ([deviceString isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,2"])      return @"iPad 2";
    if ([deviceString isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
    if ([deviceString isEqualToString:@"iPad2,4"])      return @"iPad 2";
    if ([deviceString isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,6"])      return @"iPad Mini";
    if ([deviceString isEqualToString:@"iPad2,7"])      return @"iPad Mini (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,2"])      return @"iPad 3 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad3,3"])      return @"iPad 3";
    if ([deviceString isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,5"])      return @"iPad 4";
    if ([deviceString isEqualToString:@"iPad3,6"])      return @"iPad 4 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad4,1"])      return @"iPad Air (WiFi)";
    if ([deviceString isEqualToString:@"iPad4,2"])      return @"iPad Air (Cellular)";
    if ([deviceString isEqualToString:@"iPad4,4"])      return @"iPad Mini 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad4,5"])      return @"iPad Mini 2 (Cellular)";
    if ([deviceString isEqualToString:@"iPad4,6"])      return @"iPad Mini 2";
    if ([deviceString isEqualToString:@"iPad4,7"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad4,8"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad4,9"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad5,1"])      return @"iPad Mini 4 (WiFi)";
    if ([deviceString isEqualToString:@"iPad5,2"])      return @"iPad Mini 4 (LTE)";
    if ([deviceString isEqualToString:@"iPad5,3"])      return @"iPad Air 2";
    if ([deviceString isEqualToString:@"iPad5,4"])      return @"iPad Air 2";
    if ([deviceString isEqualToString:@"iPad6,3"])      return @"iPad Pro 9.7";
    if ([deviceString isEqualToString:@"iPad6,4"])      return @"iPad Pro 9.7";
    if ([deviceString isEqualToString:@"iPad6,7"])      return @"iPad Pro 12.9";
    if ([deviceString isEqualToString:@"iPad6,8"])      return @"iPad Pro 12.9";
    
    if ([deviceString isEqualToString:@"i386"])         return @"Simulator";
    if ([deviceString isEqualToString:@"x86_64"])       return @"Simulator";
    
    return deviceString;
}

/** getDeviceIPAddresses
 *
 *  獲取設備IP
 *
 */

+ (NSString *)getDeviceIPAddresses {
    
    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    
    NSMutableArray *ips = [NSMutableArray array];
    
    int BUFFERSIZE = 4096;
    
    struct ifconf ifc;
    
    char buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;
    
    struct ifreq *ifr, ifrcopy;
    
    ifc.ifc_len = BUFFERSIZE;
    ifc.ifc_buf = buffer;
    
    if (ioctl(sockfd, SIOCGIFCONF, &ifc) >= 0){
        
        for (ptr = buffer; ptr < buffer + ifc.ifc_len; ){
            
            ifr = (struct ifreq *)ptr;
            int len = sizeof(struct sockaddr);
            
            if (ifr->ifr_addr.sa_len > len) {
                len = ifr->ifr_addr.sa_len;
            }
            
            ptr += sizeof(ifr->ifr_name) + len;
            if (ifr->ifr_addr.sa_family != AF_INET) continue;
            if ((cptr = (char *)strchr(ifr->ifr_name, ':')) != NULL) *cptr = 0;
            if (strncmp(lastname, ifr->ifr_name, IFNAMSIZ) == 0) continue;
            
            memcpy(lastname, ifr->ifr_name, IFNAMSIZ);
            ifrcopy = *ifr;
            ioctl(sockfd, SIOCGIFFLAGS, &ifrcopy);
            
            if ((ifrcopy.ifr_flags & IFF_UP) == 0) continue;
            
            NSString *ip = [NSString  stringWithFormat:@"%s", inet_ntoa(((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr)];
            [ips addObject:ip];
        }
    }
    
    close(sockfd);
    NSString *deviceIP = @"";
    
    for (int i=0; i < ips.count; i++) {
        if (ips.count > 0) {
            deviceIP = [NSString stringWithFormat:@"%@",ips.lastObject];
        }
    }
    return deviceIP;
}

/** getUUID
 *
 *  獲取設備惟一標示符
 *
 */
- (NSString *)getUUID
{
    NSString *uuid = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    NSLog(@"唯一識別碼uuid-->%@", uuid);
    return uuid;
}



/** getDeviceInfo
 *
 *  獲取設備信息
 *
 */

+ (NSString *)getDeviceInfo
{
    NSString *deviceName = [SystemRelated getDeviceName];
    NSString *iPhoneName = [UIDevice currentDevice].name;
    NSString *appVerion = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
    NSString *appSign = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleSignature"];
    NSString *appBundleId = [[NSBundle mainBundle] bundleIdentifier];
    NSString *appName = [[[NSBundle mainBundle]infoDictionary] objectForKey:@"CFBundleDisplayName"];
    [[UIDevice currentDevice] setBatteryMonitoringEnabled:YES];
    UIDevice *myDevice = [UIDevice currentDevice];
    [myDevice setBatteryMonitoringEnabled:YES];
    double batteryLevel = (float)[myDevice batteryLevel];
    NSString *localizedModel = [UIDevice currentDevice].localizedModel;
    NSString *systemName = [UIDevice currentDevice].systemName;
    NSString *systemVersion = [UIDevice currentDevice].systemVersion;
    NSString *uuid = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *device_model = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    NSString *macAddress = [SystemRelated getMacAddress];
    NSString *deviceIP = [SystemRelated getIPAddress:YES];
    
    
    return  [NSString stringWithFormat:@"\n設備型號:%@\niPhone名稱:%@\nAPPBundleId:%@\nAPPName:%@\nAPP版本號:%@\nAPP簽名信息:%@\n系統名稱:%@\n系統版本號:%@\n唯一識別碼UUID:%@\n電池電量:%0.0f\nlocalizedModel:%@\ndevice_model:%@\nMac:%@\nIPAddress:%@\n",deviceName,iPhoneName,appBundleId,appName,appVerion,appSign,systemName,systemVersion,uuid,batteryLevel * 100,localizedModel,device_model,macAddress,deviceIP];
}

/** getIPAddress
 *
 *  獲取IP
 *
 */
+ (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 = [SystemRelated getIPAddresses];
    NSLog(@"addresses: %@", addresses);
    
    __block NSString *address;
    [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)
     {
         address = addresses[key];
         //篩選出IP地址格式
         if([SystemRelated isValidatIP:address]) *stop = YES;
     } ];
    return address ? address : @"0.0.0.0";
}

/** isValidatIP
 *
 *  IP驗證
 *
 */
+ (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];
            //輸出結果
            NSLog(@"%@",result);
            return YES;
        }
    }
    return NO;
}

/** getIPAddresses
 *
 *  獲取IP相關信息
 *
 */
+ (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;
}

/** getIPAddressWithWAN
 *
 *  獲取外網IP
 *
 */
+ (NSString *)getIPAddressWithWAN{
    /*
     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];
    return ip;
}


@end
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