Timeout function after 10 seconds Swift/iOS

Question

I want to display a "Network Error" message if after 10 seconds of trying to connect, a login does not succeed.

How can I stop my login function after 10 seconds and show this error message?

I'm using AlamoFire.

I don't have the full implementation, but this is the skeleton of what I want my function to behave like:

func loginFunc() {

    /*Start 10 second timer, if in 10 seconds 
     loginFunc() is still running, break and show NetworkError*/


    <authentication code here>
}

Update your question with your relevant code that you wish to timeout. — rmaddy, Oct 21 '16 at 03:31
Update your question with your actual working code that you need to update with a timeout. — rmaddy, Oct 21 '16 at 03:39
I don't have the full working code yet. How does the full code matter anyway? It will just be a call to the database to check if the user/password combo is accurate. — Nishant Roy, Oct 21 '16 at 03:42
There are a thousand ways to make networking calls so the ability to do a timeout is dependent on how you are doing it. — rmaddy, Oct 21 '16 at 03:44
mention the library you are using like alamofire or afnetworking, etc with your code — xmhafiz, Oct 21 '16 at 03:53

score 19 · Answer 1 · answered May 31 '19 at 07:35

19

Here is the solution for Swift 4

DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
   // Excecute after 3 seconds
}

answered May 31 '19 at 07:35

Hiran Walawage

2,048
1
22
20

Rajat · Accepted Answer · 2016-10-21T05:17:08.567

4

If you are using Alamofire below is the code to define timeout

let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
configuration.timeoutIntervalForRequest = 10 // seconds
configuration.timeoutIntervalForResource = 10
self.alamoFireManager = Alamofire.Manager(configuration: configuration)

also you don't need to manage it through timer, as timer will fire exactly after 10 seconds, irrelevant whether your API get response or not, just manage it with timeout.

and here is how you manage timeout

self.alamofireManager!.request(.POST, "myURL", parameters:params)
.responseJSON { response in
    switch response.result {
        case .Success(let JSON):
            //do json stuff
        case .Failure(let error):
            if error._code == NSURLErrorTimedOut {
               //call your function here for timeout
            }
     }
}

edited Oct 21 '16 at 05:17

answered Oct 21 '16 at 05:12

Rajat

10,977
3
38
55

Thanks Rajat. How do I call a function when it does timeout? Suppose I want to call some `myFunc()` when AlamoFire times out. – Nishant Roy Oct 21 '16 at 05:14
1

Edited my answer to handle timeout, please check. – Rajat Oct 21 '16 at 05:17
When I use just `Alamofire`, my request is working fine. When I use `Alamorefire.Manager`, it says `NSErrorFailingURLStringKey` – Nishant Roy Oct 21 '16 at 05:46
The `init()` solution doesn't work for me, because I don't have any `init()` calls in my code. Is there anyway to pass configuration to `Alamofire` itself? Instead of a manager? – Nishant Roy Oct 21 '16 at 06:04
try it in viedDidLoad – Rajat Oct 21 '16 at 06:05

score 4 · Answer 3 · answered Oct 21 '16 at 06:14

func delay(delay:Double, closure:()->()) {
    dispatch_after(
        dispatch_time( DISPATCH_TIME_NOW, Int64(delay * Double(NSEC_PER_SEC))), dispatch_get_main_queue(), closure)
}

func loginFunc() {

    delay(10.0){
        //time is up, show network error
        //return should break out of the function (not tested)
        return
    }

    //authentication code

Timeout function after 10 seconds Swift/iOS

3 Answers3

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