獲取iPhone或iPad設備的IP地址使用Swift 3

Question

如何在不使用任何使用Swift 3編程語言的第三方庫的情況下獲取設備IP地址。其實我已經使用下面的代碼來獲取IP地址。

func getIPAddress() -> String? { 
var address : String? 

var ifaddr : UnsafeMutablePointer<ifaddrs> = nil 
if getifaddrs(&ifaddr) == 0 { 

    var ptr = ifaddr 
    while ptr != nil { 
     defer { ptr = ptr.memory.ifa_next } 

     let interface = ptr.memory 

     let addrFamily = interface.ifa_addr.memory.sa_family 
     if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) { 

      if let name = String.fromCString(interface.ifa_name) where name == "en0" { 

       var hostname = [CChar](count: Int(NI_MAXHOST), repeatedValue: 0) 
       getnameinfo(interface.ifa_addr, socklen_t(interface.ifa_addr.memory.sa_len), 
          &hostname, socklen_t(hostname.count), 
          nil, socklen_t(0), NI_NUMERICHOST) 
       address = String.fromCString(hostname) 
      } 
     } 
    } 
    freeifaddrs(ifaddr) 
} 

return address 

}

但UnsafeMutablePointer語法是行不通的。它通過語法錯誤。我是否需要導入任何框架試圖幫助我。

Answer 1

在橋接頭中添加#include<ifaddrs.h>。

這是獲取IP地址所需的框架。

您也可以參考以下鏈接：

Swift - Get device's IP Address

Answer 2

試試這個（無橋接報是必要的，在遊樂場它作品）

//: Playground - noun: a place where people can play 

import Darwin 

var temp = [CChar](repeating: 0, count: 255) 
enum SocketType: Int32 { 
    case SOCK_STREAM = 0, SOCK_DGRAM, SOCK_RAW 
} 

// host name 
gethostname(&temp, temp.count) 
// create addrinfo based on hints 
// if host name is nil or "" we can connect on localhost 
// if host name is specified (like "computer.domain" ... "My-MacBook.local") 
// than localhost is not aviable. 
// if port is 0, bind will assign some free port for us 

var port: UInt16 = 0 
let hosts = ["localhost", String(cString: temp)] 
var hints = addrinfo() 
hints.ai_flags = 0 
hints.ai_family = PF_UNSPEC 

for host in hosts { 
    print("\n\(host)") 
    print() 

    // retrieve the info 
    // getaddrinfo will allocate the memory, we are responsible to free it! 
    var info: UnsafeMutablePointer<addrinfo>? 
    defer { 
     if info != nil 
     { 
      freeaddrinfo(info) 
     } 
    } 
    var status: Int32 = getaddrinfo(host, String(port), nil, &info) 
    guard status == 0 else { 
     print(errno, String(cString: gai_strerror(errno))) 
     continue 
    } 
    var p = info 
    var i = 0 
    var ipFamily = "" 
    var ipType = "" 
    while p != nil { 
     i += 1 
     // use local copy of info 
     var _info = p!.pointee 
     p = _info.ai_next 

     switch _info.ai_family { 
     case PF_INET: 
      _info.ai_addr.withMemoryRebound(to: sockaddr_in.self, capacity: 1, { p in 
       inet_ntop(AF_INET, &p.pointee.sin_addr, &temp, socklen_t(temp.count)) 
       ipFamily = "IPv4" 
      }) 
     case PF_INET6: 
      _info.ai_addr.withMemoryRebound(to: sockaddr_in6.self, capacity: 1, { p in 
       inet_ntop(AF_INET6, &p.pointee.sin6_addr, &temp, socklen_t(temp.count)) 
       ipFamily = "IPv6" 
      }) 
     default: 
      continue 
     } 
     print(i,"\(ipFamily)\t\(String(cString: temp))", SocketType(rawValue: _info.ai_socktype)!) 

    } 

} 

它打印在我電腦

localhost 

1 IPv6 ::1 SOCK_RAW 
2 IPv6 ::1 SOCK_DGRAM 
3 IPv4 127.0.0.1 SOCK_RAW 
4 IPv4 127.0.0.1 SOCK_DGRAM 

Ivos-MacBook-Pro.local 

1 IPv6 fe80::18a2:e892:fbd7:558e SOCK_RAW 
2 IPv6 fe80::18a2:e892:fbd7:558e SOCK_DGRAM 
3 IPv4 172.20.10.3 SOCK_RAW 
4 IPv4 172.20.10.3 SOCK_DGRAM 

Answer 3

我做了以下事情以獲取設備的確切IP地址。由於我想包含更新後的代碼以使用Swift 3獲取IP地址，因此我在此發佈答案。在你的橋接報從Swift - Get device's IP Address

1. 簡稱添加#include<ifaddrs.h>

2. ，以獲取IP地址創建下面的函數。

   func getIP()-> String? { 
   
   var address: String? 
   var ifaddr: UnsafeMutablePointer<ifaddrs>? = nil 
   if getifaddrs(&ifaddr) == 0 { 
   
       var ptr = ifaddr 
       while ptr != nil { 
        defer { ptr = ptr?.pointee.ifa_next } // memory has been renamed to pointee in swift 3 so changed memory to pointee 
   
        let interface = ptr?.pointee 
        let addrFamily = interface?.ifa_addr.pointee.sa_family 
        if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) { 
   
         if let name: String = String(cString: (interface?.ifa_name)!), name == "en0" { // String.fromCString() is deprecated in Swift 3. So use the following code inorder to get the exact IP Address. 
          var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST)) 
          getnameinfo(interface?.ifa_addr, socklen_t((interface?.ifa_addr.pointee.sa_len)!), &hostname, socklen_t(hostname.count), nil, socklen_t(0), NI_NUMERICHOST) 
          address = String(cString: hostname) 
         } 
   
        } 
       } 
       freeifaddrs(ifaddr) 
       } 
   
       return address 
   } 
   

3. 爲了獲得IP地址，print(getIP())

爲了驗證： - >轉到設置 - >無線網絡 - >點擊我的象徵 - >您可以檢查您的設備IP地址。

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