osx - Cocoa: determine network availability on wake -

i'm writing cocoa os x application needs perform different actions depending on whether or not there internet connectivity when system wakes sleep. use notification center of nsworkspace.sharedworkspace() receive wake notifications so:

nsworkspace.sharedworkspace().notificationcenter.addobserver(self, selector: "onsystemwake:", name: nsworkspacedidwakenotification, object: nil) 

my problem implementation of onsystemwake:. use reachability sample code query if there internet connectivity when system wakes:

@objc func onsystemwake(notif: nsnotification) {     let status = internetreachability.currentreachabilitystatus()     if status.value == notreachable.value {         // internet not reachable, stuff.     } else {         // internet reachable, other stuff.     } } 

this seems work fine when i'm @ home , put laptop sleep , wake again. however, if laptop switches known wifi during sleep (e.g. when arrive @ university), code above detects there no internet reachability when laptop wakes sleep @ new location - despite there known wifi available.

i assume cause of network connection still in process of being established when system wake notification received application.

i delay internet reachability check occur x seconds after system wake notification has been received, seems bad solution combinations of laptops , networks may have longer connection times others.

is there way notified when network adapters (both wired , wireless) have finished connection attempts?

it better claim network it! because maybe connected network network! not connected internet!

for internet reachability use code below , works fine me on ios!

        let domain: nsurl = nsurl(string : "http://google.com/")!     let req : nsmutableurlrequest = nsmutableurlrequest(url: domain)     req.httpmethod = "post"     let data = "\0"     req.httpbody = data.datausingencoding(nsutf8stringencoding)     nsurlconnection.sendasynchronousrequest(req, queue: nsoperationqueue.mainqueue())         {             (respons,data,error) in             print(respons)             if respons == nil             { \\ internet not active!!             }             else             { \\ internet active!!                 }         } 

the above code saying google means internet! if can reach google.com means i'm connected network anyway! if not i'm not!

the problem if using network company network , network isn't providing internet connection! above code won't satisfy needs! in case , of course depend on network have request else! router!