Use CURL from API - swift

Question

I am new with APIs and I am trying to import data from the API of Schiphol Airport. First I tried this link in my query, but then I got the following result.
https://api.schiphol.nl/public-flights/flights?app_id=////APPID////&app_key=////APPKEY////&includedelays=false&page=0&sort=%2Bscheduletime
result: {code = 406; description = "Can't retrieve version number from accept-header";}
I think that I have to use the CURL to get a result, but I don't know how to do that in SWIFT 3.
CURL: curl -X GET --header "Accept: application/json" --header "ResourceVersion: v3" "https://api.schiphol.nl/public-flights/flights?app_id=////APPID////&app_key=////APPKEY////&includedelays=false&page=0&sort=%2Bscheduletime"
My code now looks like this:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let url = NSURL(string: "https://api.schiphol.nl/public-flights/flights?app_id=////APPID////&app_key=////APPKEY////&scheduledate=2017-07-11&airline=CND&includelays=false&page=0&sort=%2Bscheduletime")!
let task = URLSession.shared.dataTask(with: url as URL) { (data, response, error) -> Void in
if let urlContent = data {
do{
let jsonResult = try JSONSerialization.jsonObject(with: urlContent, options: JSONSerialization.ReadingOptions.mutableContainers)
print(jsonResult)
} catch{
print("failed")
}
}
}
task.resume()
}
Can somebody help me out?

Answer 1

Instead of a simple URL use an URLRequest and add the header field.
This is the Swift equivalent of the cURL syntax:
let url = URL(string: "https://api.schiphol.nl/public-flights/flights?app_id=xxxxxxx&app_key=yyyyyyyyyyyyy5&scheduledate=2017-07-11&airline=CND&includelays=false&page=0&sort=%2Bscheduletime")!
var request = URLRequest(url: url)
request.addValue("v3", forHTTPHeaderField: "ResourceVersion")
let task = URLSession.shared.dataTask(with: request) { (data, response, error) -> Void in ...
I made the personal data anonymous.
Note: Don't pass any options in JSONSerialization, the option .mutableContainers is completely useless in Swift.
let jsonResult = try JSONSerialization.jsonObject(with: urlContent)

Answer 2

According to the API documents you need to set the ResourceVersion in the headers for the call.
The following should work:
var req = URLRequest.init(url: URL.init(string: "https://api.schiphol.nl/public-flights/flights?app_id=//APPID//&app_key=//APPKEY//")!)
req.setValue("v3", forHTTPHeaderField: "ResourceVersion")
URLSession.shared.dataTask(with: req) { (data, response, error) in
print(try? JSONSerialization.jsonObject(with: data!, options: .init(rawValue: 4)))
}.resume()