Authenticated http request swift Alamofire

Question

I'm struggling with getting this to work to make request to my API. Without a token works, but when I try to add additional headers, things turn to be complicated, for me.

First, the structure. one class called: APIAsyncTask that makes the requests

one class called APIParams, just a data holder to send parameters to the APIAsyncTask class.

one class called DatabaseAPI that makes that builds the parameters, and send that to the APIAsyncTask class.

DatabaseAPI

func someMethod()
{
    let task = APIAsyncTasks()
    task.registerCallback { (error, result) -> Void in
        print("Finished task, back at DatabaseAPI")
    }
    let params2 = APIParams(request: .GET, apiPath: "Posts/1", apiToken: "4iTX-56w")
    task.APIrequest(params2)
}

APIAsyncTask

This part is for fixing another error, because manager was not global, the task got cancelled quickly.

var manager : Manager!

init(authenticatedRequest : Bool, token: String?)
{
    manager = Alamofire.Manager()
    print("Pre \(manager.session.configuration.HTTPAdditionalHeaders?.count)")
    if(authenticatedRequest && token != nil)
    {
        var defaultHeaders = Alamofire.Manager.sharedInstance.session.configuration.HTTPAdditionalHeaders!   
        defaultHeaders["Authorization"] = "bearer \(token)"
        let configuration = Manager.sharedInstance.session.configuration
        configuration.HTTPAdditionalHeaders = defaultHeaders

        manager = Alamofire.Manager(configuration: configuration)
    }
    print("Post \(manager.session.configuration.HTTPAdditionalHeaders?.count)")
}

After some decision making, it comes down to this part.

 private func GetRequest(url: String!,token : String?, completionHandler: (JSON?, NSURLRequest?, NSHTTPURLResponse?, NSError?) -> () ) -> ()
{
    print("Begin Get Request")

    if(token != nil)//if token is not nil, make authenticated request
    {
        print("just before request: \(manager.session.configuration.HTTPAdditionalHeaders?.count)")
        manager.request(.GET, url, parameters: nil, encoding: .JSON).responseJSON { (request, response, json, error) in
            print("Get Request (authenticated), inside alamofire request")
            var resultJson : JSON?
            if(json != nil)
            {
                resultJson = JSON(json!)
            }
            completionHandler(resultJson, request, response, error)
        }
    }
    else
    {
     //working part without token

So as the code is now, I get an error on completing:

runtime error

Mattt himself gives the answer of using Alamofire.Manager.sharedInstance.session.configuration.HTTPAdditionalHeaders , so that should be fine...

I suspect it has something to do with the multiple threads, according to this blog. Or, since it is something about CFNetwork, it could be because my API does not use SSL? I disabled NSAppTransportSecurity

I'm kind of new to swift, so examples would be really appreciated! Thankyou!

Should you keep strong reference to manager. I am not sure but could you check that,. — Sandeep, Jul 08 '15 at 10:33
Suggested actions? I'm not sure how I would make it a weak reference.. — CularBytes, Jul 08 '15 at 10:50

score 2 · Accepted Answer · answered Jul 09 '15 at 15:34

So the majority of your code looks solid.

The error leads me to believe that CFNetwork is having difficulty figuring out how to compute the protection space for the challenge. I would also assume you are getting a basic auth challenge since you are attaching an Authorization header.

Digging through your logic a bit more with this in mind led me to see that your not attaching your token to the string properly inside the Authorization header. You need to do the following instead.

defaultHeaders["Authorization"] = "bearer \(token!)"

Otherwise your Authorization header value is going to include Optional(value) instead of just value.

That's the only issue I can see at the moment. If you could give that a try and comment back that would be great. I'll update my answer accordingly if that doesn't actually solve your problem.

Best of luck!

hi cnoon, thanks for taking the time to try and figure out what is wrong. Also, thanks for telling me that my code looks pretty solid. I indeed get an auth challange. In the meantime I've spent time on logging in, thus getting a real access token. So I just tried it, with your answer, with a real valid access token, and it works! That.. little ! did the trick.. HOWEVER: I was checking if it was just luck because it now is a valid access token, turns out, that if it's invalid or expired, it still throws the same error :( — CularBytes, Jul 09 '15 at 16:12
so, long story short, the `!` is required, but instead of 401 http code when invalid or expired access token, I get the same exception. — CularBytes, Jul 09 '15 at 16:15

score 0 · Answer 2 · edited May 23 '17 at 12:22

0

You can add your headers in your request with Alamofire 2 and Swift 2.

For an example: go to example

edited May 23 '17 at 12:22

Community

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answered Sep 18 '15 at 09:06

fatihyildizhan

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did you test if it throws exception when token is invalid? Or does it return 401? – CularBytes Sep 18 '15 at 09:34
I handled the error on server side. My header "Authorization" was coming null. Now it is working. – fatihyildizhan Sep 18 '15 at 09:36
I mean: When the token, you are setting in the header, is invalid or expired, will it crash / throw exception or will it return 401? – CularBytes Sep 18 '15 at 09:56
No, nothing happened that's why I struggled to find what's going on. – fatihyildizhan Sep 18 '15 at 10:01

Authenticated http request swift Alamofire

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