How can I retry failed requests using alamofire? - ios

Question

I append failed requests to queue manager (contains array) in case of no connection
I'm presenting a custom pop-up with a retry button. When the retry button is pressed, I want to retry the requests that cannot be sent in the no connection state. There may be more than one request.
When I try the retryRequest method from Alamofire Session class, the task state of the request remains in the initilazed or finished state, but it must be resumed in order to send the request successfully, how can I solve this situation?
InterceptorInterface.swift
public func didGetNoInternetConnection() {
let viewModel = AppPopupViewModel(title: L10n.AppPopUp.areYouOffline, description: L10n.AppPopUp.checkInternetConnection, image: Images.noInternetConnection.image, firstButtonTitle: L10n.General.tryAgain, secondButtonTitle: nil, firstButtonAction: { [weak self] in
guard let self = self else { return }
DispatchQueue.main.async {
self.retry()
}
}, secondButtonAction: nil, dismissCompletion: nil, dimColor: Colors.appGray.color.withAlphaComponent(0.8), showCloseButton: true, customView: nil)
DispatchQueue.main.async {
AppPopupManager.show(with: viewModel, completion: nil)
}
}
private func retry() {
guard let head = NetworkRequestStorage.shared.head else {
return
}
let request = head.request
let session = head.session
session.retryRequest(request, withDelay: nil)
}
APIInterceptor.swift
final class APIInterceptor: Alamofire.RequestInterceptor {
private let configure: NetworkConfigurable
private var lock = NSLock()
// MARK: - Initilize
internal init(configure: NetworkConfigurable) {
self.configure = configure
}
// MARK: - Request Interceptor Method
internal func adapt(_ urlRequest: URLRequest, for session: Session, completion: #escaping (Result<URLRequest, Error>) -> Void) {
lock.lock()
defer {
lock.unlock()
}
var urlRequest = urlRequest
if let token = self.configure.accessToken {
/// Set the Authorization header value using the access token.
urlRequest.setValue("Bearer " + token, forHTTPHeaderField: "Authorization")
}
// Set Accept-Language header value using language code
urlRequest.setValue(configure.languageCode, forHTTPHeaderField: "Accept-Language")
// Arrange Request logs for develope and staging environment
if let reachability = NetworkReachabilityManager(), !reachability.isReachable {
configure.didGetNoInternetConnection()
completion(.failure(APIClientError.networkError))
}
completion(.success(urlRequest))
}
// MARK: - Error Retry Method
internal func retry(_ request: Request, for session: Session, dueTo error: Error, completion: #escaping (RetryResult) -> Void) {
// Arrange Error logs for develope and staging environment
if let aError = error as? APIClientError, aError.statusCode == 400 { // no connection state
NetworkRequestStorage.shared.enqueue(request: request, session: session)
completion(.doNotRetryWithError(error))
} else {
request.retryCount <= configure.retryCount ? completion(.retry) : completion(.doNotRetryWithError(error))
}
}
}
If the request is successful or there is no connection error, I remove it from the NetworkRequestStoroge class.