Can't download images from Facebook after call FirebaseApp.configure() - when app linked to FirebasePerformance.

[vgorloff]

[READ] Step 1: Are you in the right place?

When i'm calling method for image download before FirebaseApp.configure() it works.
When i'm calling method for image download after FirebaseApp.configure() - getting iOS Networking error finished with error - code: -1001.

Line above FirebaseApp.configure() - OK.
Line below FirebaseApp.configure() - Not OK.

[REQUIRED] Step 2: Describe your environment

• Xcode version: 9.1 (AppStore) or 9.2 beta (9C34b)
• Firebase SDK version: 4.6.0

[REQUIRED] Step 3: Describe the problem

Steps to reproduce:

• Use sample URL: https://graph.facebook.com/v2.11/109693813139899/picture?type=square&width=140&height=140

• Download image from sample URL before calling FirebaseApp.configure().
  As result image downloaded

• Download image from sample URL after calling FirebaseApp.configure()
  As result iOS Networking error: Task <ADC5BE66-ACD8-49FD-9863-D37AAEF25C31>.<1> finished with error - code: -1001

Relevant Code:

class SampleDownloader {
   
   let urlSession = URLSession(configuration: URLSessionConfiguration.default)
   var task: URLSessionTask?
   let url = URL(string: "https://graph.facebook.com/v2.11/109693813139899/picture?type=square&width=140&height=140")!

   func download() {
      print(url)
      task = urlSession.dataTask(with: url) { data, response, error in
         print(data)
         print(response)
         print(error)
      }
      task?.resume()
   }
}

// ---
let sd = SampleDownloader()
sd.download() // Works
FirebaseApp.configure()

// ---
let sd = SampleDownloader()
FirebaseApp.configure()
sd.download() // `Task <...>.<1> finished with error - code: -1001`

[morganchen12]

Apple's docs say this is a timeout error.

Does replacing your download link with a small file hosted locally make the issue go away? If so, it's likely not a Firebase issue.

[vgorloff]

Interesting that same URLSession used to download other images. Issue observed only when downloading image from Facebook. And only if Firebase app is configured (by calling FirebaseApp.configure()). :0

[vgorloff]

Curl working well: curl -v -L --url 'https://graph.facebook.com/v2.11/109693813139899/picture?type=square&width=140&height=140'

[vgorloff]

Same thing on Firebase 4.3.0. :0

[vgorloff]

Firebase 4.3.0:
Not linking to FirebasePerformance solved issue .)

Flags removed: -framework FirebasePerformance -framework GTMSessionFetcher

So issue in FirebasePerformance module.

[vgorloff]

Theoretically issue related to FirebasePerformance + HTTP2. Because Facebook CDN uses HTTP2.

[morganchen12]

I see, thanks for digging into that.

[vgorloff]

Firebase 4.6.0, Xcode 9.2 beta (9C34b), iOS 11.2:

Not linking to FirebasePerformance solved issue .)
Flags removed: -framework FirebasePerformance -framework GTMSessionFetcher

So issue definitely in FirebasePerformance module.

[morganchen12]

Filed internal but b/69680733; I'll keep this ticket updated as progress is made.

[vgorloff]

Thanks! .)

[mikehaney24]

This will be fixed in the next version of the SDK. Leaving open until then.

[votson]

So I should be good now

[votson]

So I be getting better now

[mikehaney24]

This issue should be fixed in the latest FirebasePerformance pod, v1.1.0. Please feel free to reopen if that's not the case!