AFNetworking 2.0 cancel specific task

Question

I am trying out afnetworking 2.0 and just trying to figure out how to cancel specific tasks. The old way would be to use something like

[self cancelAllHTTPOperationsWithMethod:@"POST" path:@"user/receipts"]

but I dont see anything like this in 2.0

I created a sub class of AFHTTPSessionManager which gives me access to the array of pending tasks and I can cancel them directly but I dont know how to identify 1 task from another so I can cancel only specific tasks. Task does have an taskidentifier but this doesnt appear to be what I need.

NSString *path = [NSString stringWithFormat:@"user/receipts"];
[self.requestSerializer setAuthorizationHeaderFieldWithUsername:[prefs valueForKey:@"uuid"] password:self.store.authToken];
[self GET:path parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) {
            completionBlock(responseObject);
        } failure:^(NSURLSessionDataTask *task, NSError *error) {
            errorBlock(error);
        }];

now if i wanted to cancel this request only how would I approach this?

Answer 1

You can store the task in a variable so you can access it later:

NSURLSessionDataTask* task = [self GET:path parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) {
            completionBlock(responseObject);
        } failure:^(NSURLSessionDataTask *task, NSError *error) {
            errorBlock(error);
        }];

Then simply cancel it with [task cancel].

Another way would be to save the task ID of the task and later ask the URL session for its tasks and identify the task you wish to cancel:

// save task ID
_savedTaskID = task.taskIdentifier;

// cancel specific task
for (NSURLSessionDataTask* task in [self dataTasks]) {
    if (task.taskIdentifier == _savedTaskID) {
        [task cancel];
    }
}