AFNetworking - How to setup requests to be retried in the event of a timeout?

Question

I have recently migrated from ASIHTTPRequest to AFNetworking, which has been great. However, the server that I am connecting with has some issues and sometimes causes my req

Answer 1

Based on your answers, you could do something even more generic (and tricky) by using a block taking as parameter a block :

typedef void (^CallbackBlock)(NSError* error, NSObject* response);
- (void) performBlock:(void (^)(CallbackBlock callback)) blockToExecute retryingNumberOfTimes:(NSUInteger)ntimes onCompletion:(void (^)(NSError* error, NSObject* response)) onCompletion {
    blockToExecute(^(NSError* error, NSObject* response){
        if (error == nil) {
            onCompletion(nil, response);
        } else {
            if (ntimes <= 0) {
                if (onCompletion) {
                    onCompletion(error, nil);
                }
            } else {
                [self performBlock:blockToExecute retryingNumberOfTimes:(ntimes - 1) onCompletion:onCompletion];
            }
        };
    });
}

Then surround your asynchronous HTTP requests like the following :

[self performBlock:^(CallbackBlock callback) {

        [...]
        AFHTTPRequestOperationManager *manager = [WSManager getHTTPRequestOperationManager];
        [manager POST:base parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {

            dispatch_async(dispatch_get_main_queue(), ^(void){
                    if (callback) {
                        callback(nil, responseObject);
                    }
                });

            } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                if (callback) {
                    NSError* errorCode = [[NSError alloc] initWithDomain:AppErrorDomain code:[operation.response statusCode] userInfo:@{ NSLocalizedDescriptionKey :error.localizedDescription}];
                    callback(errorCode, nil);
                }
            }];

    } retryingNumberOfTimes:5 onCompletion:^(NSError *error,  NSObject* response) {
        //everything done
    }];

This way the retries wait for the HTTP request to finish and you don't have to implement the retry loop in each request methods.