从昨天开始，我一直在寻找一个更简单的解决方案，以便仅对网站进行ping并检查它在Swift中是否返回200。

但是我发现的只是目标C中的解决方案。

在Swift中，我找到了一些答案，例如

func pingHost(_ fullURL: String) {
        let url = URL(string: fullURL)

        let task = URLSession.shared.dataTask(with: url!) { _, response, _ in
            if let httpResponse = response as? HTTPURLResponse {
                print(httpResponse.statusCode)
            }
        }

        task.resume()
    }

但是当我从其他函数调用它时

self.pingHost("https://www.google.com")

它给出了奇怪的错误，例如

2018-09-26 12:46:34.076938+0530 Net Alert[1608:52682] dnssd_clientstub ConnectToServer: connect()-> No of tries: 1
2018-09-26 12:46:35.082274+0530 Net Alert[1608:52682] dnssd_clientstub ConnectToServer: connect()-> No of tries: 2
2018-09-26 12:46:36.083497+0530 Net Alert[1608:52682] dnssd_clientstub ConnectToServer: connect()-> No of tries: 3
2018-09-26 12:46:37.083964+0530 Net Alert[1608:52682] dnssd_clientstub ConnectToServer: connect() failed path:/var/run/mDNSResponder Socket:5 Err:-1 Errno:1 Operation not permitted
2018-09-26 12:46:37.084497+0530 Net Alert[1608:52682] [] nw_resolver_create_dns_service_locked [C1] DNSServiceCreateDelegateConnection failed: ServiceNotRunning(-65563)
2018-09-26 12:46:37.087264+0530 Net Alert[1608:52682] TIC TCP Conn Failed [1:0x600003706e80]: 10:-72000 Err(-65563)
2018-09-26 12:46:37.088841+0530 Net Alert[1608:52673] Task <2B08658D-5DFA-48E9-A306-A47ED130DD1F>.<1> HTTP load failed (error code: -1003 [10:-72000])
2018-09-26 12:46:37.088990+0530 Net Alert[1608:52673] Task <2B08658D-5DFA-48E9-A306-A47ED130DD1F>.<1> finished with error - code: -1003

我如何简单地在Swift 4中ping并检查它是否返回200？