How to setup reachability test for specific domain through AFNetworking? - ios

Question

AFNetworkReachabilityManager *mgr=[AFNetworkReachabilityManager sharedManager];
[mgr startMonitoring];
[mgr setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
//NSLog(#"Reachability: %#", AFStringFromNetworkReachabilityStatus(status));
if ([AFNetworkReachabilityManager sharedManager].reachable) {
NSLog(#" ONLINE");
}
else
{
NSLog(#"OFFLINE");
}
}];
This is how I tested reachability through AFNetworking now! How to check reachability in specific domain? And how does AFNetworking uses to test the reachability ?
[AFNetworkReachabilityManager managerForDomain:#"www.google.com"]; didn't work

Answer 1

Couple of things.
First, you really should configure the manager before starting monitoring. In this case this means you should call setReachabilityStatusChangeBlock before calling startMonitoring.
Second, when you're creating new AFNetworkReachabilityManager by using managerForDomain:, you are responsible for managing lifetime of the object. If you use code above with ARC enabled, mgr will be deallocated as soon as it goes out of scope meaning that there will be no manager to monitor reachability. One solution is to make mgr an instance variable of a class, e.g. an application delegate.

Answer 2

/**
Creates and returns a network reachability manager for the specified domain.
#param domain The domain used to evaluate network reachability.
#return An initialized network reachability manager, actively monitoring the specified domain.
*/
+ (instancetype)managerForDomain:(NSString *)domain;
this is from the afnetworking source code,
to monitor a specified domain, just create a reachability manager for that domain using this class method. like this
AFNetworkReachabilityManager *mgr= [AFNetworkReachabilityManager managerForDomain:#"www.google.com"];