Code Quiz

Retrying Authenticated Requests

Spot the bug in a URLSession helper that retries an authenticated request on flaky connections.

Codeswift

func fetchProfile(token: String, retries: Int = 3) {
    var request = URLRequest(url: URL(string: "https://api.example.com/profile")!)
    request.setValue("Bearer \(token)", forHTTPHeaderField: "Authorization")

    let task = URLSession.shared.dataTask(with: request) { data, response, error in
        if let error = error {
            print("Request failed: \(error.localizedDescription)")
            if retries > 0 {
                fetchProfile(token: token, retries: retries)
            }
            return
        }
        guard let data = data else { return }
        print("Got \(data.count) bytes")
    }
    task.resume()
}

This helper is meant to retry up to 3 times on a flaky connection. What is the bug?

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