1.手機(jī)發(fā)射WiFi熱點(diǎn)
獲取ios設(shè)備ip地址的方法是遍歷ios所有（實(shí)體/虛擬）網(wǎng)卡，當(dāng)熱點(diǎn)啟動(dòng)的時(shí)候沪蓬，肯定會(huì)增加一個(gè)新的ip地址彤钟。于是通過日志記錄了不啟動(dòng)熱點(diǎn)和啟動(dòng)熱點(diǎn)時(shí)所有ipv4地址，果然啟動(dòng)熱點(diǎn)后跷叉，會(huì)增加一個(gè)橋接虛擬網(wǎng)卡逸雹，名稱（ifa_name）為“bridge0”或“bridge100”
以下為熱點(diǎn)啟動(dòng)后，所有ipv4網(wǎng)卡的情況：
- lo0 //本地ip, 127.0.0.1
- en0 //局域網(wǎng)ip, 192.168.1.23
- pdp_ip0 //WWAN地址云挟，即3G ip,
- bridge0 //橋接梆砸、熱點(diǎn)ip，172.20.10.1
通過遍歷所有ipv4網(wǎng)卡园欣，查詢網(wǎng)卡名稱是否包含“bridge”即可判斷當(dāng)前熱點(diǎn)是否啟動(dòng)帖世。
// Get All ipv4 interface
+ (NSDictionary *)getIpAddresses {
NSMutableDictionary* addresses = [[NSMutableDictionary alloc] init];
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
@try {
// retrieve the current interfaces - returns 0 on success
NSInteger success = getifaddrs(&interfaces);
//NSLog(@"%@, success=%d", NSStringFromSelector(_cmd), success);
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) {
// Get NSString from C String
NSString* ifaName = [NSString stringWithUTF8String:temp_addr->ifa_name];
NSString* address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *) temp_addr->ifa_addr)->sin_addr)];
NSString* mask = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *) temp_addr->ifa_netmask)->sin_addr)];
NSString* gateway = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *) temp_addr->ifa_dstaddr)->sin_addr)];
AXNetAddress* netAddress = [[AXNetAddress alloc] init];
netAddress.name = ifaName;
netAddress.address = address;
netAddress.netmask = mask;
netAddress.gateway = gateway;
NSLog(@"netAddress=%@", netAddress);
addresses[ifaName] = netAddress;
}
temp_addr = temp_addr->ifa_next;
}
}
}
@catch (NSException *exception) {
NSLog(@"%@ Exception: %@", DEBUG_FUN, exception);
}
@finally {
// Free memory
freeifaddrs(interfaces);
}
return addresses;
}
