ios获取请求域名

import Foundation

func fetchDomain(from url: URL) -> String {
    return url.host ?? ""
}

let urlString = "https://api.example.com/data"
if let url = URL(string: urlString) {
    let domain = fetchDomain(from: url)
    print("请求的域名是: \(domain)")
} else {
    print("无效的URL")
}

if let url = URL(string: urlString), let host = url.host {
    print("请求的域名是: \(host)")
} else {
    print("无法获取域名，请检查URL格式")
}

class MySessionDelegate: NSObject, URLSessionDelegate {
    func urlSession(_ session: URLSession, task: URLSessionTask, willPerformHTTPRedirection response: HTTPURLResponse, newRequest request: URLRequest, completionHandler: @escaping (URLRequest?) -> Void) {
        if let url = request.url, let host = url.host {
            if isValidDomain(host) {
                completionHandler(request)
            } else {
                completionHandler(nil)
            }
        } else {
            completionHandler(nil)
        }
    }

    func isValidDomain(_ domain: String) -> Bool {
        // 实现域名验证逻辑
        return true
    }
}