restart searching whenever connection failed

Change-Id: I56bacb9953a07054da08546b982a1379de8e6642

ios/iosremote/iosremote.xcodeproj/xcuserdata/me.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist

@@ -8,11 +8,11 @@
          ignoreCount = "0"
          continueAfterRunningActions = "No"
          filePath = "iosremote/Communication/CommunicationManager.m"
-         timestampString = "397932312.890248"
+         timestampString = "398102600.954242"
          startingColumnNumber = "9223372036854775807"
          endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "77"
+         startingLineNumber = "78"
-         endingLineNumber = "77"
+         endingLineNumber = "78"
          landmarkName = "-connectionStatusHandler:"
          landmarkType = "5">
       </FileBreakpoint>

ios/iosremote/iosremote/Communication/CommunicationManager.m

@@ -71,6 +71,7 @@
                                                             otherButtonTitles:NSLocalizedString(@"Help", nil), nil];
                     [message show];
                 });
+                [(server_list_vc *)self.delegate startSearching];
             } else {
                 [[self.delegate navigationController] popToRootViewControllerAnimated:YES];
                 BasePresentationViewController *bpvc = [[(MainSplitViewController *)[self.delegate presentingViewController] viewControllers] objectAtIndex:1];

ios/iosremote/iosremote/serverList_vc.h

@@ -14,4 +14,5 @@
 
 @property (strong, nonatomic) IBOutlet UITableView *serverTable;
 
+- (void) startSearching;
 @end

ios/iosremote/iosremote/serverList_vc.m

@@ -24,8 +24,8 @@
 @property (nonatomic, strong) id slideShowPreviewStartObserver;
 @property (nonatomic, strong) id pinValidationObserver;
 @property (atomic, strong) NSIndexPath *lastSpinningCellIndex;
-
 @property (nonatomic, strong) NSNetServiceBrowser *serviceBrowser;
+
 @property (nonatomic, strong) NSTimer *searchLabelTimer;
 @property (nonatomic, strong) NSTimer *searchTimeoutTimer;
 @property (nonatomic, strong) NSString *searchStateText;
@@ -46,6 +46,13 @@
 @synthesize serviceBrowser = _serviceBrowser;
 
 #pragma mark - helper
+- (void) startSearching
+{
+    [self.comManager.autoDiscoveryServers removeAllObjects];
+    [self.serviceBrowser searchForServicesOfType:@"_impressremote._tcp" inDomain:@"local"];
+    [self.serviceBrowser scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
+}
+
 - (void) setSearchStateText:(NSString *)searchStateText
 {
     _searchStateText = searchStateText;
@@ -75,6 +82,9 @@
 -(void) netService:(NSNetService *)sender didNotResolve:(NSDictionary *)errorDict
 {
     NSLog(@"Failed to resolve");
+    [self.comManager.autoDiscoveryServers removeAllObjects];
+    [self startSearching];
+    
     UIAlertView *message = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Failed to reach your computer", nil)
                                                       message:NSLocalizedString(@"Please consider restart LibreOffice Impress on your computer.", nil)
                                                      delegate:self
@@ -140,7 +150,6 @@
 - (void)netServiceBrowser:(NSNetServiceBrowser *)aNetServiceBrowser didNotSearch:(NSDictionary *)errorDict
 {
     NSLog(@"search error");
-//    [self.serviceBrowser searchForServicesOfType:@"_impressRemote._tcp" inDomain:@"local"];
 }
 
 - (void)netServiceBrowser:(NSNetServiceBrowser *)aNetServiceBrowser
@@ -158,6 +167,9 @@
     if(!moreComing)
     {
         [self.tableView reloadData];
+        [self.serviceBrowser stop];
+        [self.searchTimeoutTimer invalidate];
+        [self.searchLabelTimer invalidate];
     }
 }
 
@@ -245,8 +257,7 @@
     [self.serverTable reloadData];
     self.serviceBrowser = [[NSNetServiceBrowser alloc] init];
     [self.serviceBrowser setDelegate:self];
-    [self.serviceBrowser searchForServicesOfType:@"_impressremote._tcp" inDomain:@"local"];
+    [self startSearching];
-    [self.serviceBrowser scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
     [super viewDidAppear:animated];
 }
 
@@ -299,8 +310,7 @@
     if ([self.comManager.autoDiscoveryServers count] == 0 && indexPath.section == 0){
         // No discovered server and not searching => in a "click to refresh" state, so we restart searching process
         if (self.comManager.searchState == WAITING){
-            [self.serviceBrowser searchForServicesOfType:@"_impressremote._tcp" inDomain:@"local"];
+            [self startSearching];
-            [self.serviceBrowser scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
         }
         // Return when browser is still searching...
         return;