暂时用这个了
- (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
tempaddr = interfaces;
while (tempaddr != NULL) {
if( tempaddr->ifaaddr->safamily == AFINET) {
// Check if interface is en0 which is the wifi connection on the iPhone
if ([[NSString stringWithUTF8String:tempaddr->ifaname] isEqualToString:@"en0"]) {
// Get NSString from C String
address = [NSString stringWithUTF8String:inetntoa(((struct sockaddrin *)temp_addr->ifa_addr)->sin_addr)];
}
}
temp_addr = temp_addr->ifa_next;
}
}
// Free memory
freeifaddrs(interfaces);
return address;
}