Alamofire 5：EXC_BAD_ACCESS

Question

我在Alamofire 5.0 CR3中遇到此崩溃

崩溃发生在Alamofire库的RequestTaskMap.swift中。

我没有任何堆栈跟踪，只有Firebase崩溃报告，我觉得这没什么用。

我有时会以相同的方法，以相同的值获得此崩溃。

func getUserDetails(for id: Int, success: @escaping(User) -> (), fail: @escaping failBlock) {
    APIClient.performRequest(for: UserDetailsRoute(userId: id)) { (response: Result<User, AFError>) in
        self.complete(response, success: success, fail: fail)
    }
}

路由器：

struct UserDetailsRoute: Route {
    let userId: Int

    var methodType: HTTPMethod { return .get }
    var path: URL { return APIType.client.url.appendingPathComponent("/user/\(userId)") }
    var customHeaders: [String : String]?  { return [HTTPHeaderField.contentType.rawValue : ContentType.urlEncoded.rawValue] }
}

PerformRequest：

@discardableResult
func performRequest<T: Decodable>(for route: Route, decoder: JSONDecoder = JSONDecoder(), completion: @escaping (Result<T, AFError>) -> Void) -> DataRequest {
    return sessionManager.request(NetworkRouter(route))
        .validate(statusCode: 200..<300)
        .responseDecodable(decoder: decoder) { (response: DataResponse<T, AFError>) in
            completion(response.result)
    }
}

URLRequestConvertible：

struct NetworkRouter: URLRequestConvertible {

    let route: Route

    init(_ route: Route) {
        self.route = route
    }

    func asURLRequest() throws -> URLRequest {

        var urlRequest = URLRequest(url: route.path)

        // HTTP Method
        urlRequest.httpMethod = route.methodType.rawValue

        // Common Headers

        urlRequest.setValue(NetworkConfig.CLIENT_ID, forHTTPHeaderField: HTTPHeaderField.clientId.rawValue)
        urlRequest.setValue(AppSettings.shared.interfaceLanguage, forHTTPHeaderField: HTTPHeaderField.acceptLanguage.rawValue)

        // Custom headers
        if let headers = route.customHeaders {
            for header in headers {
                urlRequest.setValue(header.value, forHTTPHeaderField: header.key)
            }
        }

        // Body
        if let route = route as? RouteBody {
            urlRequest.httpBody = route.data
        }

        // Parameters
        if let route = route as? RouteParameters {
            do {
                urlRequest = try route.encoder.encode(urlRequest, with: route.parameters)
            } catch {
                throw AFError.parameterEncodingFailed(reason: .customEncodingFailed(error: error))
            }
        }

        return urlRequest
    }

}

任何想法，我该怎么做才能解决此问题？我真的不知道从哪里开始。

//编辑1：在AppScheme中添加Zombi对象会给我：致命错误：展开一个Optional值时意外发现nil。

Hmm

//编辑2：

//编辑3：从bt命令添加堆栈跟踪：

Answer 1

它似乎是一个多线程问题。创建会话时是否使用自定义队列？检查rootQueue是否为串行。

根据文档：

/// Root `DispatchQueue` for all internal callbacks and state update. **MUST** be a serial queue.