Make Better Things



I like to make better things.

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!