Swift-获取设备的WIFI IP地址
我需要在Swift中获取iOS设备的IP地址。这不是其他有关此问题的重复!如果没有wifi IP地址,我只需要获取WiFiIP地址-我需要处理它。关于堆栈溢出有一些问题,但是只有返回IP地址的函数。:
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
}
在这里,我得到2个值-来自移动互联网的地址(我认为)和需要的WiFi地址。还有其他方法可以获取仅WiFi IP地址吗?
回答:
根据多个SO线程(例如,iOS网络接口名称的确切含义是什么?pdp_ip是什么?ap是什么?),iOS设备上的WiFi接口始终具有名称“ en0”。
您的代码(这似乎是我在“ 如何迅速获取IP地址”中回答的内容)检索 所有 正在运行的网络接口的IP地址的列表。可以轻松地修改它,使其仅返回“en0”接口的IP地址,而实际上这正是我 最初 在该线程处回答的(这只是对[如何以编程方式获取iphoneip地址的回答的快速翻译。):
// Return IP address of WiFi interface (en0) as a String, or `nil`func getWiFiAddress() -> String? {
var address : 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 interface = ptr.memory
// Check for IPv4 or IPv6 interface:
let addrFamily = interface.ifa_addr.memory.sa_family
if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) {
// Check interface name:
if let name = String.fromCString(interface.ifa_name) where name == "en0" {
// Convert interface address to a human readable string:
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
}
用法:
if let addr = getWiFiAddress() { print(addr)
} else {
print("No WiFi address")
}
除了 的许多更改采用代码之外 ,对所有接口进行迭代现在还可以使用新的通用
sequence()
函数:
千万 忘记添加#include <ifaddrs.h>
在你的桥接报
// Return IP address of WiFi interface (en0) as a String, or `nil`func getWiFiAddress() -> String? {
var address : String?
// Get list of all interfaces on the local machine:
var ifaddr : UnsafeMutablePointer<ifaddrs>?
guard getifaddrs(&ifaddr) == 0 else { return nil }
guard let firstAddr = ifaddr else { return nil }
// For each interface ...
for ifptr in sequence(first: firstAddr, next: { $0.pointee.ifa_next }) {
let interface = ifptr.pointee
// Check for IPv4 or IPv6 interface:
let addrFamily = interface.ifa_addr.pointee.sa_family
if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) {
// Check interface name:
let name = String(cString: interface.ifa_name)
if name == "en0" {
// Convert interface address to a human readable string:
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
}
func getAddress(for network: Network) -> String? { var address: String?
// Get list of all interfaces on the local machine:
var ifaddr: UnsafeMutablePointer<ifaddrs>?
guard getifaddrs(&ifaddr) == 0 else { return nil }
guard let firstAddr = ifaddr else { return nil }
// For each interface ...
for ifptr in sequence(first: firstAddr, next: { $0.pointee.ifa_next }) {
let interface = ifptr.pointee
// Check for IPv4 or IPv6 interface:
let addrFamily = interface.ifa_addr.pointee.sa_family
if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) {
// Check interface name:
let name = String(cString: interface.ifa_name)
if name == network.rawValue {
// Convert interface address to a human readable string:
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
}
enum Network: String {
case wifi = "en0"
case cellular = "pdp_ip0"
//... case ipv4 = "ipv4"
//... case ipv6 = "ipv6"
}
然后,我们也可以访问蜂窝IP。
guard let wifiIp = getAddress(for: .wifi) else { return }
guard let cellularIp = getAddress(for: .cellular) else { return }
以上是 Swift-获取设备的WIFI IP地址 的全部内容, 来源链接: utcz.com/qa/428133.html