I am downloading a file from the web. File size is big some times may reach up to 100MBs some times, I want to continue downloading while to app goes to background or when the device is locked. For this i am using AFNetworking 3.0
[NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:myIdentifier];
It works fine as long as i am on WiFi. When i turn off WiFi and turn on my cellular network which is 4G, it stops responding and i get no data as a result of my download request. If i use
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
every thing was fine except my download will not continue when the app goes to background.
I have also checked allowsCellularAccess on NSURLSessionConfiguration and NSURLRequest and object which is YES, but my download does not work when on cellular network.
Here is my full code
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:myIdentifier];
configuration.discretionary = YES;
configuration.sessionSendsLaunchEvents = YES;
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = [NSURL URLWithString:downloadUrl];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSLog(@"Allow Cellular Network : %d",request.allowsCellularAccess);
NSLog(@"Allow Cellular Network for session: %d",configuration.allowsCellularAccess);
NSLog(@"Resource timneout interval: %f",configuration.timeoutIntervalForResource);
NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:^(NSProgress * _Nonnull downloadProgress) {
dispatch_async(dispatch_get_main_queue(), ^{
[self callProgressBlocksForUrl:lesson.archiveUrl withProgress:downloadProgress.fractionCompleted];
});
} destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) {
NSLog(@"Getting Path for File saving");
return [NSURL fileURLWithPath:fullPath];
} completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {
NSHTTPURLResponse * myresponse = (NSHTTPURLResponse *)response;
NSLog(@"Video downloaded, headers: %@", [myresponse.allHeaderFields description]);
}];
