URLSession request no longer accepted by server - json

Question

After reviewing and trying other questions and answers on StackOverflow I continue to have the following issue.
The app is meant to verify a user's username and password, then log them into the server on another screen provided the server authenticated that the user and password are valid.
The JSON response is meant to have a key Success and if it's a 1 then ok to log on else if 0 the user can not log on.
Worked fine with Swift 2 and I performed the recommended changes moving from Swift2 to Swift 3 and have no errors but have a strange response to the following code.
let body : String = ("username=\(tkUserName.text!)&password=\(tkPassword.text!)")
var request = NSMutableURLRequest()
request = NSMutableURLRequest(url: URL(string: "https://xxxxxxxxxxxx/LoginApp")!)
request.httpMethod = "POST"
request.httpBody = body.data(using: String.Encoding.utf8)
URLSession.shared.dataTask(with: request as URLRequest)
{ (data, response, error) -> Void in
DispatchQueue.main.async(execute: { () -> Void in
if response == nil
{
//advise user no internet or other
}
else
{
var success : Int?
do {
let jsonResult = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as? NSDictionary
success = jsonResult!.object(forKey: "success") as? Int
}
catch let error as NSError
{
//action error
}
if success == 1
{
//capture all is good and go to other page
self.performSegue(withIdentifier: "unwindThenGoToTeamPage", sender: self)
}
else
{
//THIS IS WHERE IT DROPS INTO EACH TIME AS SUCCESS WAS "0"
}
}
}.resume()
Here is the server response
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 7/02/2017 10:19:31 AM
Event time (UTC): 6/02/2017 11:19:31 PM
Event ID: 1f9ff75ee64149b0994fa4a46a6ea03b
Event sequence: 5
Event occurrence: 1
Event detail code: 0
and
<NSHTTPURLResponse: 0x7b9ea440> { URL: https://xxxxxxxxxxxxx/teambeta/LoginApp } { status code: 200, headers {
"Cache-Control" = private;
"Content-Length" = 67;
"Content-Type" = "application/json; charset=utf-8";
Date = "Wed, 08 Feb 2017 03:48:09 GMT";
Server = "Microsoft-IIS/7.5";
"Set-Cookie" = "ASP.NET_SessionId=ixxxxxxxxxxx; domain=xxxxx.com; path=/; HttpOnly, .ASPXAUTH=xxxxxxxxxxx; domain=xxxxx.com; expires=Fri, 10-Mar-2017 17:08:09 GMT; path=/; HttpOnly, TIsMobileDevice=True; path=/";
"X-AspNet-Version" = "4.0.30319";
"X-AspNetMvc-Version" = "5.2";
"X-Powered-By" = "ASP.NET";
} }
There is a lot more the server responded with but the issue seems to be with the URL Session I am creating. The JSON serialization is working fine but no Success key so I am not giving the server correct URL data.
And I checked that the server is still working fine for Swift2 as well as the Android and Windows versions so I know it's my code.

Answer 1

Try with the following code, this is working fine at my end. Pls check:
var request = URLRequest(url:url)
request.httpMethod = "POST"
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.addValue(AUTENTICATION_KEY, forHTTPHeaderField: "AuthenticateKey")
request.httpBody = try! JSONSerialization.data(withJSONObject: json, options: [])
request.timeoutInterval = 30
let task = URLSession.shared.dataTask(with: request, completionHandler: { data, response, error in
guard data != nil else
{
print("no data found: \(error)")
return
}
do
{
let json = try JSONSerialization.jsonObject(with: data!, options: .allowFragments) as! NSDictionary
completion(json)
}
catch let parseError
{
print(parseError)
// Log the error thrown by `JSONObjectWithData`
let jsonStr = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
print("Error could not parse JSON to load staff: '\(jsonStr)'")
}
})
task.resume()