Get IPAddress of Device or Simulator

Get IPAddress of Device or Simulator

1 ) Import In viewcontroller.h :-

#import <ifaddrs.h>

#import <arpa/inet.h>

#include <sys/socket.h>

#include <sys/sysctl.h>

#include <net/if.h>

#include <net/if_dl.h>

1 ) Write In viewcontroller.m :-

- (NSString *)getIPAddress

{

     //-------- For Devices only

     

    NSString *address = @"error";

    struct ifaddrs *interfaces = NULL;

    struct ifaddrs *temp_addr = NULL;

    int success = 0;

    success = getifaddrs(&interfaces);

    if (success == 0)

    {

        temp_addr = interfaces;

        while(temp_addr != NULL)

        {

            if(temp_addr->ifa_addr->sa_family == AF_INET)

            {

                if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"])

                {

                    address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];

                }

            }

            temp_addr = temp_addr->ifa_next;

        }

    }

    freeifaddrs(interfaces);

    NSLog(@"%@",address);

    

    _strIpAddress = address ;

    

    return address;

     

    //-------- for Simulator

    

    int mgmtInfoBase[6];

    char *msgBuffer = NULL;

    NSString *errorFlag = NULL;

    size_t length;

    

    mgmtInfoBase[0] = CTL_NET; // Request network subsystem

    mgmtInfoBase[1] = AF_ROUTE; // Routing table info

    mgmtInfoBase[2] = 0;

    mgmtInfoBase[3] = AF_LINK; // Request link layer information

    mgmtInfoBase[4] = NET_RT_IFLIST; // Request all configured interfaces

    // With all configured interfaces requested, get handle index

    if ((mgmtInfoBase[5] = if_nametoindex("en0")) == 0)

        errorFlag = @"if_nametoindex failure";

    // Get the size of the data available (store in len)

    else if (sysctl(mgmtInfoBase, 6, NULL, &length, NULL, 0) < 0)

        errorFlag = @"sysctl mgmtInfoBase failure";

    // Alloc memory based on above call

    else if ((msgBuffer = malloc(length)) == NULL)

        errorFlag = @"buffer allocation failure";

    // Get system information, store in buffer

    else if (sysctl(mgmtInfoBase, 6, msgBuffer, &length, NULL, 0) < 0) {

        free(msgBuffer);

        errorFlag = @"sysctl msgBuffer failure";

    }

    else

    {

        // Map msgbuffer to interface message structure

        struct if_msghdr *interfaceMsgStruct = (struct if_msghdr *) msgBuffer;

        // Map to link-level socket structure

        struct sockaddr_dl *socketStruct = (struct sockaddr_dl *) (interfaceMsgStruct + 1);

        // Copy link layer address data in socket structure to an array

        unsigned char macAddress[6];

        memcpy(&macAddress, socketStruct->sdl_data + socketStruct->sdl_nlen, 6);

        // Read from char array into a string object, into traditional Mac address format

        NSString *macAddressString = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X",

                                      macAddress[0], macAddress[1], macAddress[2], macAddress[3], macAddress[4], macAddress[5]];

        NSLog(@"Mac Address: %@", macAddressString);

        free(msgBuffer);

         _strIpAddress = macAddressString ;

        return macAddressString;

    }

    NSLog(@"Error: %@", errorFlag);

    return nil;

    

}