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@niklasberglund
Created September 19, 2014 15:09
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Example of how to get iOS device IP address. Modified version of function at http://zachwaugh.me/posts/programmatically-retrieving-ip-address-of-iphone/ (also works on OS X)
#include "TargetConditionals.h"
#include <ifaddrs.h>
#include <arpa/inet.h>
+ (NSString *)deviceIPAddress
{
NSString *address = @"error";
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
int success = 0;
#if TARGET_IPHONE_SIMULATOR
#error Specify network interface for computer(iPhone simulator) below and then remove this line
NSString *networkInterface = @"en1";
#else
NSString *networkInterface = @"en0";
#endif
// 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:networkInterface]) {
// 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;
}
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