Swift Alamofire "The request timed out" in one of every two requests - swift

Question

In every one of my two calls to loadHeader with the same URL, I get "The request timed out" error. In first try, the function works and I manage to get and parse the response. In second, I get time out. In third it works and in forth time out again. Is it about my code or about server? I tried waiting before trying again as it might be some security protocol of server but it didn't change anything.
Here is error code:
FAILURE: Error Domain=NSURLErrorDomain Code=-1001 "The request timed out."
And here is my code:
func loadHeader(url: String){
let parameters = ["foo": "bar"]
Alamofire.request(url, method: .get, parameters: parameters, encoding: JSONEncoding.default)
.validate { request, response, data in
// Custom evaluation closure now includes data (allows you to parse data to dig out error messages if necessary)
return .success
}
.responseJSON {
response in
let json=response.data
self.jsonToObjectHeader(json: json!)
}
}
func jsonToObjectHeader(json:Data){
do{
databases = try JSONDecoder().decode(responseHeader.self,from: json)
if databases.ordersHeader.count == 0 {
let alert = UIAlertView(title: "empty",message: "empty",delegate: nil,cancelButtonTitle: "OK")
alert.show()
}
else {
for i in 0...databases.ordersHeader.count-1 {
myArray2.append(databases.ordersHeader[i].productName!)
}
}
DispatchQueue.main.async {
self.myTableView.reloadData()
self.myTableView.tableFooterView = UIView()
}
//print(databases.ordersHeader[0].companyAddress)
}catch let jsonErr {
print(jsonErr)
}
}

Answer 1

I've added
let parameters = ["foo": "bar"]
thinking I've to give parameters as it is in the function. Just updated
Alamofire.request(url, method: .get, parameters: parameters, encoding: JSONEncoding.default)
to
Alamofire.request(url, method: .get, parameters: nil, encoding: JSONEncoding.default)
and it solved the issue. Posting this in case of someone experiences something similar.