The below URLRequest is freezing my UI until it completes. I tried implementing this answer by adding DispatchQueue.main.async {} . I also tried adding DispatchQueue.global(qos: .background).async {) on the function itself, with no results. I’d really appreciate if my UI does not get blocked while the request takes place.

DispatchQueue.global(qos: .background).async {
   uploadString()
}

func uploadString() {
    // Create a URLRequest for an API endpoint
    guard let url = URL(string: "http://111.111.11.111:5000/upload") else {
        print("Invalid URL")
        return
    }
    
    var request = URLRequest(url: url)
    
    // Change the URLRequest to a POST request
    request.httpMethod = "POST"
    request.setValue("text/plain", forHTTPHeaderField: "Content-Type")
    request.httpBody = "test"
    
    // Create the HTTP request
    let session = URLSession.shared
    let task = session.dataTask(with: request) { (data, response, error) in
        if let error = error {
            // Handle HTTP request error
            DispatchQueue.main.async {
                print("Error: (error.localizedDescription)")
            }
        } else if let data = data {
            // Handle HTTP request response
            if let responseString = String(data: data, encoding: .utf8) {
                DispatchQueue.main.async {
                    print("Response from server: (responseString)")
                }
            } else {
                DispatchQueue.main.async {
                    print("Failed to convert data to string")
                }
            }
        } else {
            DispatchQueue.main.async {
                print("Unexpected error")
            }
        }
    }
    
    task.resume()
}