What are the ways to organize interaction with network protocols and services in an application?

In iOS, interaction with network protocols and services can be organized in several ways:

1. URLSession — the standard API for performing network requests (HTTP/HTTPS). It allows downloading data, sending requests, downloading files, etc.

2. CFNetwork — a lower-level framework for working with network protocols, if more fine-grained control is needed.

3. Network.framework — a modern framework for working with network connections, including TCP, UDP, TLS, with support for network status monitoring.

4. Third-party libraries — for example, Alamofire, which simplifies working with HTTP requests and response handling.

5. WebSocket — for bidirectional real-time communication, you can use URLSessionWebSocketTask or third-party libraries.

6. CoreBluetooth — for interacting with Bluetooth devices.

Example of a simple GET request with URLSession:

let url = URL(string: "https://api.example.com/data")!
let task = URLSession.shared.dataTask(with: url) { data, response, error in
    if let data = data {
        // process data
        print(String(data: data, encoding: .utf8) ?? "")
    } else if let error = error {
        print("Error: \(error)")
    }
}
task.resume()