Grab content from POST call URLSession - swift

Question

I am trying to pull the cookie from this POST call to use for another call.
I have a URLSession response for a POST call here:
<NSHTTPURLResponse: 0x600000418120> { URL: https://example.com:443/Auth/ } { Status Code: 200, Headers {
Accept = (
"*/*"
);
"Accept-Encoding" = (
"br, gzip, deflate"
);
"Accept-Language" = (
"en-us"
);
Authorization = (
"Basic keyHere=="
);
"Content-Encoding" = (
gzip
);
"Content-Type" = (
"application/json"
);
Date = (
"Tue, 25 Sep 2018 18:17:38 GMT"
);
Host = (
"example.com:443"
);
"SMSESSION-Idle-Expire" = (
"Tue, 25-Sep-2018 20:17:38 GMT"
);
"SMSESSION-Session-Expire" = (
"Wed, 26-Sep-2018 04:17:38 GMT"
);
"Set-Cookie" = (
"SMSESSION=sessionKeyHere==;Domain=example.com;Path=/"
);
"Transfer-Encoding" = (
Identity
);
"User-Agent" = (
"Web%20Service%20Test/1 CFNetwork/974.2.1 Darwin/18.0.0"
);
"X-Forwarded-For" = (
"11.111.11.11"
);
} }
How would I pull the Set-Cookie SMSESSION key from here? Is there a correct way to do this? Or would I just parse through this response and pull the key from there?
Here is my function:
func test() {
let username = "myUsername"
let password = "myPassword"
let loginString = String(format: "%#:%#", username, password)
let loginData = loginString.data(using: String.Encoding.utf8)!
let base64LoginString = loginData.base64EncodedString()
let url = URL(string: "https://example.com:443/Auth/")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Basic \(base64LoginString)", forHTTPHeaderField: "Authorization")
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()
}
Thanks for the help!

Answer 1

Thanks #Cristik for the answer.
let session = URLSession.shared
session.dataTask(with: request) { (data, response, error) in
if let response = response {
let httpResponse = response as! HTTPURLResponse // HTTPURLResponse is a subclass of URLResponse
print(httpResponse.allHeaderFields["Set-Cookie"] ?? "") // Cookie Value
}
if let data = data {
do {
let json = try JSONSerialization.jsonObject(with: data, options: [])
print(json)
} catch {
print(error)
}
}
}.resume()