[英]How to get peer IP address in iOS app (iOS - non-iOS device peer-to-peer)
[英]How to get the Cellular IP address in iOS app
我喜欢在我的应用程序中显示IP地址,我已经知道如何显示WiFi IP地址但是当我在callular时它会显示错误,那么在iPhone上显示蜂窝IP地址的方法是什么?
这是我用于WiFi IP地址的代码:
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);
NSLog(address);
我最终成功了,我正在使用这段代码:
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
NSString *wifiAddress = nil;
NSString *cellAddress = nil;
// retrieve the current interfaces - returns 0 on success
if(!getifaddrs(&interfaces)) {
// Loop through linked list of interfaces
temp_addr = interfaces;
while(temp_addr != NULL) {
sa_family_t sa_type = temp_addr->ifa_addr->sa_family;
if(sa_type == AF_INET || sa_type == AF_INET6) {
NSString *name = [NSString stringWithUTF8String:temp_addr->ifa_name];
NSString *addr = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)]; // pdp_ip0
//NSLog(@"NAME: \"%@\" addr: %@", name, addr); // see for yourself
if([name isEqualToString:@"en0"]) {
// Interface is the wifi connection on the iPhone
wifiAddress = addr;
} else
if([name isEqualToString:@"pdp_ip0"]) {
// Interface is the cell connection on the iPhone
cellAddress = addr;
}
}
temp_addr = temp_addr->ifa_next;
}
// Free memory
freeifaddrs(interfaces);
}
NSString *addr = wifiAddress ? wifiAddress : cellAddress;
NSLog(addr);
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