let url = URL(string: <#T##URL String#>) guard let requestUrl = url else { fatalError() } var request = URLRequest(url: requestUrl) request.httpMethod = "POST" // Set Request Header request.setValue("application/json", forHTTPHeaderField: "Accept") request.setValue("application/json", forHTTPHeaderField: "Content-Type") // Set HTTP Body let newTodoItem = RequestModel(id: 300, task: "") let jsonData = try JSONEncoder().encode(newTodoItem) request.httpBody = jsonData // Make Request let task = URLSession.shared.dataTask(with: request) { (data, response, error) in if let error = error { print("Error took place \(error)") return } guard let data = data else {return} } task.resume()