Parallel download in Android & Last progress date fix

android/src/main/java/com/eko/RNBackgroundDownloaderModule.java

@@ -24,6 +24,8 @@
 import com.tonyodev.fetch2.Status;
 import com.tonyodev.fetch2core.DownloadBlock;
 import com.tonyodev.fetch2core.Func;
+import com.tonyodev.fetch2.HttpUrlConnectionDownloader;
+import com.tonyodev.fetch2core.Downloader;
 
 import org.jetbrains.annotations.NotNull;
 
@@ -81,6 +83,8 @@ public RNBackgroundDownloaderModule(ReactApplicationContext reactContext) {
     FetchConfiguration fetchConfiguration = new FetchConfiguration.Builder(this.getReactApplicationContext())
             .setDownloadConcurrentLimit(4)
             .setNamespace("RNBackgroundDownloader")
+            .enableRetryOnNetworkGain(true)
+            .setHttpDownloader(new HttpUrlConnectionDownloader(Downloader.FileDownloaderType.PARALLEL))
             .build();
     fetch = Fetch.Impl.getInstance(fetchConfiguration);
     fetch.addListener(this);
@@ -232,6 +236,7 @@ public void call(Error error) {
     );
 
     synchronized(sharedLock) {
+      lastProgressReport = new Date();
       idToRequestId.put(id, request.getId());
       requestIdToConfig.put(request.getId(), config);
       saveConfigMap();

ios/RNBackgroundDownloader.m

@@ -65,6 +65,7 @@ - (id) init {
         NSString *bundleIdentifier = [[NSBundle mainBundle] bundleIdentifier];
         NSString *sessonIdentifier = [bundleIdentifier stringByAppendingString:@".backgrounddownloadtask"];
         sessionConfig = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:sessonIdentifier];
+        sessionConfig.HTTPMaximumConnectionsPerHost = 4;
         progressReports = [[NSMutableDictionary alloc] init];
         lastProgressReport = [[NSDate alloc] init];
         sharedLock = [NSNumber numberWithInt:1];
@@ -136,6 +137,7 @@ + (void)setCompletionHandlerWithIdentifier: (NSString *)identifier completionHan
         idToPercentMap[identifier] = @0.0;
 
         [task resume];
+        lastProgressReport = [[NSDate alloc] init];
     }
 }