ios - Alamofire 5 委托(delegate)中缺少 sessionDidReceiveChallenge

Question

我需要从 Alamofire 4 迁移到 5，但我缺少委托(delegate)上的 sessionDidReceiveChallenge 回调

我之前在版本 4 中使用过这样的东西:

let manager = Alamofire.SessionManager(
    configuration: URLSessionConfiguration.default
)

manager.delegate.sessionDidReceiveChallenge = { session, challenge in

    let method = challenge.protectionSpace.authenticationMethod

    if method == NSURLAuthenticationMethodClientCertificate {
        return (.useCredential, self.cert.urlCredential())
    }
    if method == NSURLAuthenticationMethodServerTrust {
        let trust = challenge.protectionSpace.serverTrust!
        let credential = URLCredential(trust: trust)
        return (.useCredential, credential)
    }
    return (.performDefaultHandling, Optional.none)
}

但现在是版本 5，委托(delegate)已更改为 SessionDelegate 类，但没有提供类似的功能

我尝试像这样使用来自 URLSession 的委托(delegate):

let delegate = SomeSessionDelegate()

let delegateQueue: OperationQueue = .init()

delegateQueue.underlyingQueue = .global(qos: .background)

let session = URLSession(
    configuration: URLSessionConfiguration.af.default,
    delegate: delegate,
    delegateQueue: delegateQueue
)

let manager = Alamofire.Session(
    session: session,
    delegate: SessionDelegate(),
    rootQueue: .global(qos: .background)
)

class SomeSessionDelegate: NSObject, URLSessionDelegate {

    let cert = ...

    func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {

        //same impl as before
    }
}

我猜我在第 5 版中的实现是错误的，因为我停止接收响应回调

请告知如何在版本 5 中正确管理请求质询

Answer 1

无需覆盖 SessionDelegate 即可使用客户端证书。 Alamofire 将自动使用附加的 URLCredential 进行客户端证书质询。只需将凭据附加到请求中即可:

AF.request(...)
    .authenticate(with: clientCertCredential)
    .response...

此外，您的服务器信任检查将返回任何有效的信任，这可能是一个安全问题。我会立即停止使用该代码。