Get the iOS device IP address

Write in front

Recently do about the network Interface section, sometimes for the purpose of interface security, need to request the interface at the time, with the post-service side about good, each interface needs to pass specific signature data, about the signature algorithm, the server and the mobile side is consistent; Of course this is not the main, the main thing is, how to get the IP address of the device directly on the code;

Small tips:

MAC terminal get PC Ip:ifconfig | grep "inet" | Grep-v 127.0.0.1

Main reference: StackOverflow

1 http://stackoverflow.com/questions/7072989/ iphone-ipad-osx-how-to-get-my-ip-address-programmatically/10803584#10803584

1 Import Header File2#include <ifaddrs.h>3#include <arpa/inet.h>4#include <net/if.h>5 6 #defineIos_cellular @ "Pdp_ip0"7 #defineIos_wifi @ "En0"8 #defineIos_vpn @ "Utun0"9 #defineIp_addr_ipv4 @ "IPv4"Ten #defineIp_addr_ipv6 @ "IPv6" One  A  -  - #pragmaMark-Get IP address the+ (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]; +      A     //NSLog (@ "addresses:%@", addresses); at      -__block NSString *address; -[Searcharray enumerateobjectsusingblock:^ (NSString *key, Nsuinteger idx, BOOL *stop) -      { -Address =Addresses[key]; -          //filter out IP address formats in          if([self isvalidatip:address]) *stop =YES; -      } ]; to     returnAddress? Address:@"0.0.0.0"; +  - } the  *+ (BOOL) Isvalidatip: (NSString *) ipAddress { $     if(Ipaddress.length = =0) {Panax Notoginseng         returnNO; -     } theNSString *urlregex =@"^ ([01]?\\d\\d?| 2[0-4]\\D|25[0-5]) \ \." +     "([01]?\\d\\d?| 2[0-4]\\D|25[0-5]) \ \." A     "([01]?\\d\\d?| 2[0-4]\\D|25[0-5]) \ \." the     "([01]?\\d\\d?| 2[0-4]\\D|25[0-5]) $"; +      -Nserror *error; $Nsregularexpression *regex = [nsregularexpression regularexpressionwithpattern:urlregex options:0error:&ERROR]; $      -     if(Regex! =Nil) { -Nstextcheckingresult *firstmatch=[regex firstmatchinstring:ipaddress Options:0Range:nsmakerange (0, [ipAddress length])]; the          -         if(firstmatch) {WuyiNsrange ResultRange = [Firstmatch rangeatindex:0]; theNSString *result=[ipAddress Substringwithrange:resultrange]; -             //Output Results Wu             //NSLog (@ "%@", result); -             returnYES; About         } $     } -     returnNO; - } -  A+ (Nsdictionary *) getipaddresses + { theNsmutabledictionary *addresses = [Nsmutabledictionary dictionarywithcapacity:8]; -      $     //retrieve the current interfaces-returns 0 on success the     structIfaddrs *interfaces; the     if(!getifaddrs (&interfaces)) { the         //Loop through linked list of interfaces the         structIfaddrs *Interface; -          for(Interface=interfaces;Interface;Interface=Interface-Ifa_next) { in             if(! (Interface->ifa_flags & Iff_up)/* || (Interface->ifa_flags & Iff_loopback)*/ ) { the                 Continue;//deeply nested code harder to read the             } About             Const structsockaddr_in *addr = (Const structsockaddr_in*)Interface-ifa_addr; the             Charaddrbuf[MAX (Inet_addrstrlen, Inet6_addrstrlen)]; the             if(Addr && (addr->sin_family==af_inet | | addr->sin_family==Af_inet6)) { theNSString *name = [NSString stringwithutf8string:Interface-Ifa_name]; +NSString *type; -                 if(addr->sin_family = =af_inet) { the                     if(Inet_ntop (Af_inet, &addr->sin_addr, Addrbuf, Inet_addrstrlen)) {BayiType =Ip_addr_ipv4; the                     } the}Else { -                     Const structSockaddr_in6 *ADDR6 = (Const structsockaddr_in6*)Interface-ifa_addr; -                     if(Inet_ntop (Af_inet6, &addr6->sin6_addr, Addrbuf, Inet6_addrstrlen)) { theType =Ip_addr_ipv6; the                     } the                 } the                 if(type) { -NSString *key = [NSString stringWithFormat:@"%@/%@", name, type]; theAddresses[key] =[NSString stringwithutf8string:addrbuf]; the                 } the             }94         } the         //Free Memory the Freeifaddrs (interfaces); the     }98     return[Addresses Count]?Addresses:nil; About}

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Get the iOS device IP address