Swift中利用域名获得IP地址

来源：互联网发布：企业损益表数据编辑：程序博客网时间：2024/06/07 22:15

代码如下：

func dnsToIP() -> String? {        let host = CFHostCreateWithName(nil, "baidu.com").takeRetainedValue()        CFHostStartInfoResolution(host, .Addresses, nil)        var success: Boolean = 0        if let addressesCF = CFHostGetAddressing(host, &success) {            let addresses = addressesCF.takeRetainedValue() as NSArray            if addresses.count != 0 {                let theAddress = addresses[0] as! NSData                var hostname = [CChar](count: Int(NI_MAXHOST), repeatedValue: 0)                if getnameinfo(UnsafePointer(theAddress.bytes), socklen_t(theAddress.length), &hostname, socklen_t(hostname.count), nil, 0, NI_NUMERICHOST) == 0 {                    if let numAddress = String.fromCString(hostname) {                        return numAddress                    }                }            }        } else {            NSLog("域名出错")        }        return nil    }

上述代码有些许漏洞，正在修正中，目前可使用Swift中利用域名获得IP地址 C方式

借鉴信息：
http://stackoverflow.com/questions/25890533/how-can-i-get-a-real-ip-address-from-dns-query-in-swift

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