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.
原文链接：https://www.f2er.com/swift/319827.html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
}
