我如何获取我的本地IpAddress?
我试图使用这个Obj C的例子:how to get ip address of iphone programatically
当我得到函数getifaddrs()我不能得到任何进一步.我不能使用这个功能.
有没有办法做到这一点,或者我接近这个错误的方式?
原来在讨论中,OP需要Mac上的界面地址,而不是像我以前想的那样在iOS设备上.问题中引用的代码检查
接口名称“en0”,这是iPhone上的WiFi接口.在Mac上,它使得更多
意思是检查任何“正在运行”界面.
所以我改写了答案.现在是Swift的代码翻译
Detect any connected network.
接口名称“en0”,这是iPhone上的WiFi接口.在Mac上,它使得更多
意思是检查任何“正在运行”界面.
所以我改写了答案.现在是Swift的代码翻译
Detect any connected network.
getifaddrs()定义在< ifaddrs.h>中,默认情况下不包括.
因此,您必须创建一个桥接头并添加
- #include <ifaddrs.h>
- func getIFAddresses() -> [String] {
- var addresses = [String]()
- // Get list of all interfaces on the local machine:
- var ifaddr : UnsafeMutablePointer<ifaddrs> = nil
- if getifaddrs(&ifaddr) == 0 {
- // For each interface ...
- var ptr = ifaddr
- while ptr != nil {
- defer { ptr = ptr.memory.ifa_next }
- let flags = Int32(ptr.memory.ifa_flags)
- var addr = ptr.memory.ifa_addr.memory
- // Check for running IPv4,IPv6 interfaces. Skip the loopback interface.
- if (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) {
- if addr.sa_family == UInt8(AF_INET) || addr.sa_family == UInt8(AF_INET6) {
- // Convert interface address to a human readable string:
- var hostname = [CChar](count: Int(NI_MAXHOST),repeatedValue: 0)
- if (getnameinfo(&addr,socklen_t(addr.sa_len),&hostname,socklen_t(hostname.count),nil,socklen_t(0),NI_NUMERICHOST) == 0) {
- if let address = String.fromCString(hostname) {
- addresses.append(address)
- }
- }
- }
- }
- }
- freeifaddrs(ifaddr)
- }
- return addresses
- }
Swift 3的更新:除了采用代码
many changes in Swift 3,
所有接口的迭代现在可以使用新的泛化sequence()
功能:
- func getIFAddresses() -> [String] {
- var addresses = [String]()
- // Get list of all interfaces on the local machine:
- var ifaddr : UnsafeMutablePointer<ifaddrs>?
- guard getifaddrs(&ifaddr) == 0 else { return [] }
- guard let firstAddr = ifaddr else { return [] }
- // For each interface ...
- for ptr in sequence(first: firstAddr,next: { $0.pointee.ifa_next }) {
- let flags = Int32(ptr.pointee.ifa_flags)
- var addr = ptr.pointee.ifa_addr.pointee
- // Check for running IPv4,IPv6 interfaces. Skip the loopback interface.
- if (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) {
- if addr.sa_family == UInt8(AF_INET) || addr.sa_family == UInt8(AF_INET6) {
- // Convert interface address to a human readable string:
- var hostname = [CChar](repeating: 0,count: Int(NI_MAXHOST))
- if (getnameinfo(&addr,NI_NUMERICHOST) == 0) {
- let address = String(cString: hostname)
- addresses.append(address)
- }
- }
- }
- }
- freeifaddrs(ifaddr)
- return addresses
- }