How to send json request to server and not wait on response - django

Question

I am building mobile applications to go with my django based backend. I make a post request in swift like this:
var request: NSMutableURLRequest = NSMutableURLRequest()
var url = "https://webapp.com/makepost/"
url += NSUserDefaults.standardUserDefaults().stringForKey("userPk")!
url += "/"
var err: NSError?
request.URL = NSURL(string: url)
request.HTTPMethod = "POST"
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalCacheData
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
do {
request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(JSONObject, options: NSJSONWritingOptions(rawValue:0))
} catch _ {
print ("error")
}
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue()) {(response, data, error) -> Void in
var query = String(data: data!, encoding: NSUTF8StringEncoding)
query = query!.stringByReplacingOccurrencesOfString("Optional(", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
query = query!.stringByReplacingOccurrencesOfString(")", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
print(query)
//update ui
}
As soon as I make this post it creates the necessary models in django by reading the jsonObject.
The response doesn't matter and could take long as I'm notifying other users via FCM.
This is what I'm trying to do:
Make a post request.
Ignore the response.
Update the UI immediately after I make the post request.
How should I achieve this?

Answer 1

like so
//set request variable here
let priority = DISPATCH_QUEUE_PRIORITY_DEFAULT
dispatch_async(dispatch_get_global_queue(priority, 0)) {
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue()) {(response, data, error) -> Void in
var query = String(data: data!, encoding: NSUTF8StringEncoding)
}
sleep(2)
// wait two seconds for models to create in backend
dispatch_async(dispatch_get_main_queue()) {
self.refresh(self.refreshButton)
//refresh ui here with method that fires another get request
}
}