How to log full POST request in Swift - ios

Question

This is trivia, but can not find good example.
I have following function for sending POST requests:
static func sendArrival(scan: ArrivalScan){
var urlComponents = URLComponents()
urlComponents.scheme = "https"
urlComponents.host = "api.my.url.com"
urlComponents.path = "/Delivery/Arrival/?id="
guard let url = urlComponents.url else { fatalError("Could not create URL from components") }
// Specify this request as being a POST method
var request = URLRequest(url: url)
request.httpMethod = "POST"
// Make sure that we include headers specifying that our request's HTTP body
// will be JSON encoded
var headers = request.allHTTPHeaderFields ?? [:]
headers["Content-Type"] = "application/json"
headers["ZM_APIKey"] = "mySecretKey"
request.allHTTPHeaderFields = headers
// Now let's encode out Post struct into JSON data...
let encoder = JSONEncoder()
do {
let jsonData = try encoder.encode(scan)
// ... and set our request's HTTP body
request.httpBody = jsonData
print("jsonData: ", String(data: request.httpBody!, encoding: .utf8) ?? "no body data")
} catch {
//TODO: error handling
}
// Create and run a URLSession data task with our JSON encoded POST request
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)
let task = session.dataTask(with: request) { (responseData, response, responseError) in
guard responseError == nil else {
//TODO: error handling
return
}
// APIs usually respond with the data you just sent in your POST request
if let data = responseData, let utf8Representation = String(data: data, encoding: .utf8) {
print("response: ", utf8Representation)
} else {
print("no readable data received in response")
}
}
task.resume()
}
But something is not working. To decode I need to see full request (in format it will hit server). How to print this?

Answer 1

To see much of the information in the request printed to the console, you can use:
dump(request)
A better option in my opinion is to use a tool like Charles or Wireshark, as Rob mentions above in the comments.