在更新我的应用程序以支持后台应用程序刷新时，我遇到了 AFNetworking 问题。
我收到 NSPOSIXErrorDomain Code=53 "Software caused connection abort"。问题似乎出现在 iOS 12 中，后台连接被终止。
AFNetworking 2.6.3 用于进行抓取。
AppDelegate.m:
- (void)application:(UIApplication *)application performFetchWithCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
[OrdersService performFetch];
completionHandler(UIBackgroundFetchResultNewData);
}
OrdersService.m:
-(void) performFetch {
[[AFHTTPRequestOperationManager new] GET:@"https://www.example.com/orders"
parameters:nil
success:^(AFHTTPRequestOperation *operation, id responseObject) {
}
failure:^(AFHTTPRequestOperation *operation, NSError *error) {
}
];
}
控制台输出:
[Error] GET '(null)' (0) [31.9163 s]: Error Domain=NSPOSIXErrorDomain Code=53 "Software caused connection abort" UserInfo={NSErrorFailingURLStringKey=https://www.example.com/orders, _kCFStreamErrorDomainKey=1, NSErrorPeerAddressKey={length = 16, capacity = 16, bytes = 0x100201bb3e80187c0000000000000000}, _kCFStreamErrorCodeKey=53, NSErrorFailingURLKey=https://www.example.com/orders}
最佳答案
以 0.1 秒的延迟启 Action 为后台任务的抓取解决了问题:
-(void) performFetch {
__block UIBackgroundTaskIdentifier bgTask = [[UIApplication sharedApplication] beginBackgroundTaskWithName:@"GET /orders" expirationHandler:^{
// EXPIRED
[[UIApplication sharedApplication] endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}];
// Start the long-running task and return immediately.
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.1 * NSEC_PER_SEC), dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
// Do the work associated with the task, preferably in chunks.
[[AFHTTPRequestOperationManager new] GET:@"https://www.example.com/orders"
parameters:nil
success:^(AFHTTPRequestOperation *operation, id responseObject) {
// SUCCESS
[[UIApplication sharedApplication] endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}
failure:^(AFHTTPRequestOperation *operation, NSError *error) {
// FAILURE
[[UIApplication sharedApplication] endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}
];
});
}
关于ios - 尝试后台获取期间出现 AFNetworking 错误 53，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53297188/