如何包含ifaddrs.h

Question

我有以下问题：

我想从我的iOS应用程序中获取IP地址。

但是在尝试从swift导入时出现错误

CODE：

module.modulemap

module ifaddrs [system]  [extern_c] {
    header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/ifaddrs.h"
    export *
}

module net [system]  [extern_c] {

    module types {
        header "/usr/include/sys/types.h"
        export *
    }

    module if_dl {

        header "/usr/include/net/if_dl.h"
        export *
    }

}

桥接报头

#include <ifaddrs.h>
#include <net/if_dl.h>

导入和功能

import ifaddrs

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 ...
        for (var ptr = ifaddr; ptr != nil; 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
}

func getDataUsage() -> [UInt32] {
    var ifaddr : UnsafeMutablePointer<ifaddrs> = nil
    var networkData: UnsafeMutablePointer<if_data>! = nil
    var wifiDataSent:UInt32 = 0
    var wifiDataReceived:UInt32 = 0
    var wwanDataSent:UInt32 = 0
    var wwanDataReceived:UInt32 = 0

    if getifaddrs(&ifaddr) == 0 {
        for (var ptr = ifaddr; ptr != nil; ptr = ptr.memory.ifa_next) {
            let name = String.fromCString(ptr.memory.ifa_name)
            let flags = Int32(ptr.memory.ifa_flags)

            var addr = ptr.memory.ifa_addr.memory

            if addr.sa_family == UInt8(AF_LINK) {
                if name?.hasPrefix("en") == true {
                    networkData = unsafeBitCast(ptr.memory.ifa_data, UnsafeMutablePointer<if_data>.self)

                    wifiDataSent += networkData.memory.ifi_obytes
                    wifiDataReceived += networkData.memory.ifi_ibytes
                }

                if name?.hasPrefix("pdp_ip") == true {
                    networkData = unsafeBitCast(ptr.memory.ifa_data, UnsafeMutablePointer<if_data>.self)

                    wwanDataSent += networkData.memory.ifi_obytes
                    wwanDataReceived += networkData.memory.ifi_ibytes
                }
            }
        }

        freeifaddrs(ifaddr)
    }

    return [wifiDataSent, wifiDataReceived, wwanDataSent, wwanDataReceived]
}