Swift : HTTP 500 Error when calling from callback - ios

Question

Here is my code I am using( the login part executes successfully, "Logged in successfully" is readable in the console )
#IBAction func loginAction(_ sender: Any) {
print("loginIsExecuting")
Server.Login(email: inputEmail.text!, password: inputPassword.text!, handlerDone:{
print("Logged in successfully")
Help.getData();
}, handlerFailed: {
print("===Failed to log in ")
DispatchQueue.main.sync {
self.displayAlert()
}
})
}
Help.swift
import Foundation
class Help {
static func getData(){
let urlString = URL(string: "http://192.168.1.16/~peterlizak/Secway/web/app/get-auditor")
if let url = urlString {
let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
if error != nil {
print(error)
} else {
let responseString = String(data: data!, encoding: .utf8)
print(responseString) //JSONSerialization
}
}
task.resume()
}
}
}
While executing I am getting a 500 Internal Server Error.
This is from the apache log :
192.168.1.16 - - [13/Oct/2017:12:04:30 +0200] "POST /~Myname/Myapp/web/app/get-auditor HTTP/1.1" 500 495
Using the same code only calling Help.getData() after Server.login (not in the callback function) is working when I execute the code only once. But if I click the button again to trigger loginAction() ,again the function behaves as it does in the first version: the login executes, "Logged in successfully" is in the console, but when the code tries to execute the HTTP request it gets the same HTTP 500 error.(Also that solution is not acceptable because I must call first login and after the data)
I am using symphony for the backend and this is my simple code I try to request :
/**
* #Route("/get-auditor" , name="get_auditor")
*/
public function getAuditorInfoAction(Request $request)
{
$data = array(
'status' => 1,
'description' => 1,
"header" => 1
);
return new JsonResponse($data);
}
EDIT:
Server.Login
static func Login(email: String , password: String ,handlerDone:#escaping () -> Void,handlerFailed:#escaping () -> Void) {
print("=== Server Login ===")
let url = URL(string: "\(self.baseUrl)~peterlizak/Secway/web/app/login")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
let parameters = ["email": email, "password": password]
do {
request.httpBody = try JSONSerialization.data(withJSONObject: parameters, options: .prettyPrinted)
} catch let error {
print(error.localizedDescription)
}
CallService(request: request, handlerDone:{ json in
ParseLoginResponse(json: json)
handlerDone()
}, handlerFailed: {
handlerFailed()
} )
}
Server.CallService
static func CallService(request:URLRequest,handlerDone: #escaping (_ json:[String:Any]) -> Void,handlerFailed: #escaping () -> Void)
{
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data, error == nil else { // check for fundamental networking error
print("error=\(String(describing: error))")
handlerFailed()
return
}
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(response)")
handlerFailed()
return
}
let responseString = String(data: data, encoding: .utf8)
var json:[String:Any]
do {
json = (try JSONSerialization.jsonObject(with: data, options: [])) as! [String:Any]
}
catch {
print("json error calling "+(request.url?.absoluteString)!+" =\(String(describing: error))")
print("responseString = \(responseString!)")
handlerFailed()
return
}
let status = json["status"] as! Int
if status != 0{
handlerDone(json)
}
else{
print("status is 0 = \(responseString!)")
handlerFailed()
}
}
task.resume()
}

Answer 1

HTTP 500 is an internal server error and not a client error. There will be some exception in related method in server for this API call. This error usually means something goes wrong in the server and need to look into the error trace.

Answer 2

You are mostly likely sending request to the wrong url since in the code you have /~peterlizak/Secway and error response has /~Myname/Myapp