func auth(){
        let parameters = ["login": "login", "password": "pass"]
        
        guard let url = URL(string: "https://site.ru") else { return }
        var request = URLRequest(url: url)
        request.httpMethod = "POST"
        guard let httpBody = try? JSONSerialization.data(withJSONObject: parameters, options: []) else { return }
        request.httpBody = httpBody
        
        let session = URLSession.shared
        session.dataTask(with: request) { (data, response, error) in
            if let response = response {
                print(response)
            }
            
            if let data = data {
                do {
                    let json = try JSONSerialization.jsonObject(with: data, options: [])
                    print(json)
                } catch {
                    print(error)
                }
            }
            
        }.resume()
        }
    }