Added a hack to de-duplicate hosts and some more checks when adding a host to minimize the chances for dupes

Limelight/Network/CleanupCrew.m

@@ -0,0 +1,54 @@
+//
+//  CleanupCrew.m
+//  Limelight
+//
+//  Created by Diego Waxemberg on 4/5/15.
+//  Copyright (c) 2015 Limelight Stream. All rights reserved.
+//
+
+#import "CleanupCrew.h"
+
+@implementation CleanupCrew {
+    NSArray* _hostList;
+    id<CleanupCallback> _callback;
+}
+
+static const int CLEANUP_RATE = 2;
+
+
+- (id) initWithHostList:(NSArray *)hostList andCallback:(id<CleanupCallback>)callback {
+    self = [super init];
+    _hostList = hostList;
+    _callback = callback;
+    return self;
+}
+
+- (void) main {
+    while (!self.isCancelled) {
+        NSMutableSet* dirtyHosts = [[NSMutableSet alloc] init];
+        
+        for (Host* host in _hostList) {
+            for (Host* other in _hostList) {
+                if (self.isCancelled) {
+                    break;
+                }
+                
+                // We check the name as well as a hack to remove duplicates
+                if (host != other && ([host.uuid isEqualToString:other.uuid]
+                                      || [host.name isEqualToString:other.name]))  {
+                    [dirtyHosts addObject:other];
+                }
+            }
+        }
+        
+        if (dirtyHosts.count > 0) {
+            [_callback cleanedUpHosts:dirtyHosts];
+        }
+        
+        if (!self.cancelled) {
+            [NSThread sleepForTimeInterval:CLEANUP_RATE];
+        }
+    }
+}
+
+@end