I need to find out a way to find out subnet mask and broadcast address of my personal hotspot in iOS.
I am using following way to find out IP address of device if it's connected to WiFi. But can't figure out the way to get network properties for Personal Hotspot.
+ (NSString *) localIPAddress
{
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)
{
temp_addr = interfaces;
while(temp_addr != NULL)
{
// check if interface is en0 which is the wifi connection on the iPhone
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);
return address;
}
where address is assigned, just insert:
netmask = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_netmask)->sin_addr)];
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