Apple Software Update say: “Checking occurs only when you have a network connection” How can I detect this?

It is easy to load something in the background:

url = NSURL alloc] initWithString:urlString];

// but this will block if the network connection is down! [url loadResourceDataNotifyingClient:self usingCache:YES];

I solved it by forking a new server thread, and running this code from the new thread. But there must be a way to detect the network connection.

I tried to use [[NSHost to do a quick check for the network connection, before trying to download:

NSHost *host = [NSHost hostWithName:[url host]]; if ([host address] != nil) { // Download code here… }

But this would block also for a minute or so before failing.

– Nir

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