How to check if a remote file exists in Swift ?

remoteFileExists

 
 func remoteFileExists(url: String) -> Bool {
        
        var exists: Bool = false
        let url: NSURL = NSURL(string: url)!
        var request: NSMutableURLRequest = NSMutableURLRequest(URL: url)
        request.HTTPMethod = "HEAD"
        var response: NSURLResponse?
        NSURLConnection.sendSynchronousRequest(request, returningResponse: &response , error: nil)
        
        if let httpResponse = response as? NSHTTPURLResponse {
            
            if httpResponse.statusCode == 200 {
                
                exists =  true
            }else{
                exists  = false
            }
           
        }
            return exists
    }

deprecated, does anyone know how to make this in swift 4? It asks to use NSURLSESSION, but it refers to an Objective C function

have a look here
https://stackoverflow.com/questions/30659883/simpliest-solution-to-check-if-file-exists-on-a-webserver-swift