在递归 POST 调用 AFNetworking 后获得连续 "The operation couldn’t be completed"

Question

我正在以递归方式调用 POST Json 网络服务以持续 Upload/download 数据服务，直到全部完成。可能有多达 500-1000 个请求。但在使用一段时间后，我不断收到以下错误。 -1012 是我最常得到的。

Error Domain=NSURLErrorDomain Code=-1012 "The operation couldn’t be completed. (NSURLErrorDomain error -1012.)" UserInfo=0x7ae056b0 {NSErrorFailingURLKey=https://api.XXX.com/XXX/XXX/, NSErrorFailingURLStringKey=https://api.XXX.com/XXX/XXX/}


Error: Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo=0x7ba8e5b0 {NSErrorFailingURLStringKey=, _kCFStreamErrorCodeKey=57, NSErrorFailingURLKey=, NSLocalizedDescription=The network connection was lost., _kCFStreamErrorDomainKey=1, NSUnderlyingError=0x7a6957e0 "The network connection was lost."}

我在下面提到 post 说它只发生在 iOS8 但我同时在 iOS7 和 iOS8 以及两个 Device/Simulator 和 Wifi/Lan

Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost."

以下是我在方法中的使用方法

-(void) callService {
    //counter list variable is already initialized earlier
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:   
         [NSURL URLWithString:@"https://url.com/url"]];
    NSDictionary *params = @{@"id": counter,
                     @"data": [list objectAtIndex:counter]};
    NSMutableURLRequest *request = [httpClient requestWithMethod:@"GET"
    path:@"http://url.com/url/url1/" parameters:params];
    AFJSONResponseSerializer *operation = [[AFJSONResponseSerializer 
           alloc] initWithRequest:request];
    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation 
        *operation, id responseObject) {
        //Process Data
        counter++;
        [self callService];
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
        counter++;
        if(error.code == -1012 || error.code == -1005) {
            [self performSelector:@selector(callService) withObject:nil 
              afterDelay:5];
        } else {
            [self callService];
        }
    }];
    [operation start];
}

在这种情况下，即使从服务器端关闭连接也有帮助。

Answer 1

得到解决方案

升级到 AFNetworking 2.5.3，现在我得到的错误代码非常少，如 -1005、-1012... 并且后续请求已正确执行。目前还使用服务器端的连接关闭。将尝试与此一起使用 keep alive 并分享我的观察结果。

感谢 Rob 的建议。

在递归 POST 调用 AFNetworking 后获得连续 "The operation couldn’t be completed"

Getting continous "The operation couldn’t be completed" after recursive POST call AFNetworking

recursion

objective-c

ios

afnetworking