Dear all, Please help with the following problem:
Our app is a client that running on Mac OS X and should connect to server using TCP-based protocol. We are using SCNetworkReachability (and SCNetworkReachabilityCreateWithName) API to sign up for notifications when the server becomes unreachable. So far it has worked ok. Now the client should work in the environment that is: a) protected with proxy. b) the DNS server does not make DNS forwarding for external world-wide servers (so, as result of this, for our servers as well). In such environment our client should connect to the server via proxy, specify the server FQDN name, and the proxy makes DNS resolution for it. The client succeeds to connect, but then SCNetworkReachability sends me notification, that the server is unavailable. We have such a problem in all Mac OS X versions below 10.11 (in 10.11 it works ok, i.e. Reachability API does not complain). It is a real problem for us, since the client really succeeded to establish connection with server, but cannot rely on Reachability notification. Should the SCNetworkReachability work in such configuration? (I mean should it detect that the host is reachable?). If it should not work (I can understand that the SCNetworkReachability API requires DNS resolution), but why it does in 10.11? Is there any configuration to make SCNetworkReachability work in versions below 10.11? Thanks a lot, Yulia
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