title: Multipeer Connectivity stops working when user turns off and on bluetooth
body: <p>I am using multipeer connectivity in ios7 in my app. The file sending and receiving works absolutely fine, but in the moment that a user accesses from within my app the control center (or even settings) and switches off either bluetooth or wifi, the file exchange stops working. When the user witches both of them back on, still it doesn't work. In order for them to work again, the user must close and re-open the app.</p>
  
  <p>The files are sent in this way:</p>
  
  <pre><code>MCSession *session = [[MCSession alloc]
                                            initWithPeer:key];
  
  
                      NSCalendar *gregorian = [[NSCalendar alloc]
                                               initWithCalendarIdentifier:NSGregorianCalendar];
  
                      NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
                      dateComponents.year = 2100;
                      dateComponents.month = 1;
                      dateComponents.day = 1;
                      dateComponents.hour = 0;
                      dateComponents.minute = 0;
                      dateComponents.second = 0;
  
                      NSDate *referenceDate = [gregorian dateFromComponents: dateComponents];
  
                      NSDate *now = [NSDate date];
                      NSTimeInterval interval = [now timeIntervalSinceDate:referenceDate];
  
                      NSData *Recording = [NSData dataWithContentsOfFile:myFilePath];
  
  
                      NSString* str = [NSString stringWithFormat:@"%@.ext", button.titleLabel.text];
  
  
                      NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
                      [dict setObject:str forKey:@"fileName"];
                      [dict setObject:@"Recording" forKey:@"fileType"];
                      [dict setObject:Recording forKey:@"FileData"];
  
                      NSData *myData = [NSKeyedArchiver archivedDataWithRootObject:dict];
  
                      [browser invitePeer:key
                                toSession:session
                              withContext:myData
                                  timeout:interval];
  </code></pre>
  
  <p>The user can reload the devices at any time using:</p>
  
  <pre><code>[browser startBrowsingForPeers];
  </code></pre>
  
  <p>I think that the problem is the timeout, but I am not sure.</p>