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POMethod calling itself with identical params
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  1. POMethod calling itself with identical params
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    copied!<p>I have several "proxy" classes, which inherit from a "base proxy". These classes connect to my server and pass data to their delegates. In event of 0 status code, I want to handle these different requests in the same way.</p> <p>For 0 status codes, I want to retry the method in 5 seconds, hoping the user's internet connection has improved.</p> <h1>SomethingProxy.m</h1> <pre><code>- (void)fetchSomething { NSString *fullPath = [NSString stringWithFormat:@"%@/route/index.json",MY_BASE_URL]; NSURL *url = [NSURL URLWithString:fullPath]; NSURLRequest *request = [NSURLRequest requestWithURL:url]; AFJSONRequestOperation *operation = [[AFJSONRequestOperation alloc] initWithRequest:request]; [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) { NSDictionary *d = (NSDictionary *)responseObject; [self.delegate fetchedPolicy:d[@"keypath"]]; } failure:^(AFHTTPRequestOperation *operation, NSError *error) { [self handleOperationFailed:operation action:^{ [self fetchSomething]; }]; }]; NSOperationQueue *q = [[NSOperationQueue alloc] init]; [q addOperation:operation]; } </code></pre> <h1>MyBaseProxy.m</h1> <pre><code>- (bool)shouldRetryOperation:(AFHTTPRequestOperation *)o { return self.retries &lt; [self maxRetries]; } - (void)handleOperationFailed:(AFHTTPRequestOperation *)o action:(ActionBlock)block { NSInteger statusCode = o.response.statusCode; if (statusCode == 0) { if ([self shouldRetryOperation:o]) { double delayInSeconds = 5.0; dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC)); dispatch_after(popTime, dispatch_get_main_queue(), ^(void){ self.retries++; block(); }); } else { self.retries = 0; [SVProgressHUD showErrorWithStatus:@"Please check your internet connection and try again"]; return; } } self.retries = 0; </code></pre> <p>What's a better way to handle the request failure? Should I subclass AFHTTPRequestOperation?</p> <p>EDIT: Removed confusing text. When I meant "same way", I meant per request Eg. handle all 500s the same, handle all 403s the same. I'm specifically asking for handling status code 0 - no internet connection.</p>
 

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