Is there a way to do Alamofire requests with retries

Question

I have a lot of places in the code where Alamofire request/response are handled.

Each of this requests may fail because of some intermittent problem (the most commo

Answer 1

Alamofire 4.0 has a RequestRetrier protocol you can use.

https://github.com/Alamofire/Alamofire/blob/master/Documentation/Alamofire%204.0%20Migration%20Guide.md#request-retrier

Example:

class OAuth2Handler: RequestAdapter, RequestRetrier {
    public func should(_ manager: SessionManager, retry request: Request, with error: Error, completion: RequestRetryCompletion) {
        if let response = request.task.response as? HTTPURLResponse, response.statusCode == 401 {
            completion(true, 1.0) // retry after 1 second
        } else {
            completion(false, 0.0) // don't retry
        }

        // Or do something with the retryCount
        // i.e. completion(request.retryCount <= 10, 1.0)
    }
}

let sessionManager = SessionManager()
sessionManager.retrier = OAuth2Handler()

sessionManager.request(urlString).responseJSON { response in
    debugPrint(response)
}