fixed MDNS discovered hosts getting stuck in infinite loop

Limelight/Network/DiscoveryManager.m

@@ -105,12 +105,15 @@
         DataManager* dataMan = [[DataManager alloc] init];
         // Discover the hosts before adding to eliminate duplicates
         for (Host* host in hosts) {
+            NSLog(@"Found host through MDNS: %@:", host.name);
             // Since this is on a background thread, we do not need to use the opQueue
-            NSOperation* worker = [self createWorkerForHost:host];
-            [worker main];
+            DiscoveryWorker* worker = (DiscoveryWorker*)[self createWorkerForHost:host];
+            [worker discoverHost];
             if ([self addHostToDiscovery:host]) {
+                NSLog(@"Adding host to discovery: %@", host.name);
                 [_callback updateAllHosts:_hostQueue];
             } else {
+                NSLog(@"Not adding host to discovery: %@", host.name);
                 [dataMan removeHost:host];
             }
         }

Limelight/Network/DiscoveryWorker.h

@@ -12,6 +12,7 @@
 @interface DiscoveryWorker : NSOperation
 
 - (id) initWithHost:(Host*)host uniqueId:(NSString*)uniqueId cert:(NSData*)cert;
+- (void) discoverHost;
 - (Host*) getHost;
 
 + (void) updateHost:(Host*)host withServerInfo:(NSData*)serverInfoData;

Limelight/Network/DiscoveryWorker.m

@@ -32,6 +32,14 @@ static const float POLL_RATE = 2.0f; // Poll every 2 seconds
 
 - (void)main {
     while (!self.cancelled) {
+        [self discoverHost];
+        if (!self.cancelled) {
+            [NSThread sleepForTimeInterval:POLL_RATE];
+        }
+    }
+}
+
+- (void) discoverHost {
     BOOL receivedResponse = NO;
     if (!self.cancelled && _host.localAddress != nil) {
         HttpManager* hMan = [[HttpManager alloc] initWithHost:_host.localAddress uniqueId:_uniqueId deviceName:deviceName cert:_cert];
@@ -67,10 +75,6 @@ static const float POLL_RATE = 2.0f; // Poll every 2 seconds
         // If the host is not online, we do not know the pairstate
         _host.pairState = PairStateUnknown;
     }
-        if (!self.cancelled) {
-            [NSThread sleepForTimeInterval:POLL_RATE];
-        }
-    }
 }
 
 + (void) updateHost:(Host*)host withServerInfo:(NSData*)serverInfoData {