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How to find IP Address of iPhone

The iOS SDK does not provide any simple way to get IP address of device programmatically. So the only way left is to get it by c code. So here we go -

Step 1 – Add these header file in your code -

 #include <ifaddrs.h>
#include <arpa/inet.h>
 

Step 2 – And here is the real code -


- (NSString *)getIPAddress { 
	
	NSString *address = @"error"; 
	struct ifaddrs *interfaces = NULL; 
	struct ifaddrs *temp_addr = NULL; 
	int success = 0; 
	// retrieve the current interfaces - returns 0 on success 
	success = getifaddrs(&interfaces); 
	if (success == 0) { 
		// Loop through linked list of interfaces 
		temp_addr = interfaces; 
		while(temp_addr != NULL) { 
			if(temp_addr->ifa_addr->sa_family == AF_INET) { 
				// Check if interface is en0 which is the wifi connection on the iPhone 
				if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) { 
					// Get NSString from C String 
					address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)]; 
					
					
				} 
				
			} 
			
			temp_addr = temp_addr->ifa_next; 
		} 
	} 
	// Free memory 
	freeifaddrs(interfaces); 
	return address; 
	
} 

Hope it saves someone’s time!

Category: iPhone, Objective-C

Tagged: ,

8 Responses

  1. haribabu says:

    hi actually i want to write a code,that is if any body used my code in his application that time i have to track their ip address of the iphone

  2. Saurabh says:

    Hi Haribabu, You can get ip address by the code above .. then call your web service which will post the ip on your server.

  3. Alaija says:

    It’s easy to send request to web service, and look for address it come from.

    • Saurabh says:

      What if your app is for offline use?Then you must calculate it on device itself. Also calling a web service may delay for functions ..

  4. sumit says:

    hi actually i want to write a code that current wifi connection is secure or not..how can i do?

  5. LIANG says:

    is it officially accepted by Apple?

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