SCNetworkReachabilityGetFlags in Reachability sample code takes too long to return

Question

I\'m using iOS4.1 on an iPhone4. I\'m also using the latest version of the Reachability code. My device doesn\'t have a connection but it seems like the code waits to timeou

Answer 1

Are you sure you're using it asynchronously?

From Apple's docs ReadMe.txt on the Reachability project:

The Reachability sample demonstrates the asynchronous use of the SCNetworkReachability API. You can use the API synchronously, but do not issue a synchronous check by hostName on the main thread. If the device cannot reach a DNS server or is on a slow network, a synchronous call to the SCNetworkReachabilityGetFlags function can block for up to 30 seconds trying to resolve the hostName. If this happens on the main thread, the application watchdog will kill the application after 20 seconds of inactivity.

So, I think you're right - start a background thread to handle it.