AFNetworking - 如何设置在超时时重试的请求？ [英] AFNetworking - How to setup requests to be retried in the event of a timeout?

问题描述

我最近从ASIHTTPRequest迁移到AFNetworking，这非常棒。但是，我连接的服务器有一些问题，有时会导致我的请求超时。使用ASIHTTPRequest时，可以使用以下选择器在超时时为请求设置重试计数

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 requests to timeout. When using ASIHTTPRequest it was possible to setup a retry count on a request in the event of a timeout using the following selector

-setNumberOfTimesToRetryOnTimeout:

这篇文章可以进一步引用，可以重试ASIHTTPRequest吗？

This can be further referenced in this post, Can an ASIHTTPRequest be retried?

如果您不熟悉，这是AFNetworking
https://github.com/AFNetworking/AFNetworking#readme

This is AFNetworking if you are unfamiliar https://github.com/AFNetworking/AFNetworking#readme

我无法在AFNetworking中找到等效的api，有没有人找到使用AFNetworking在超时时重试网络请求的解决方案？

推荐答案

AFNetworking的开发人员Matt Thompson非常友好地为我解答了这个问题。下面是解释解决方案的github链接。

Matt Thompson developer of AFNetworking was kind enough to answer this for me. Below is the github link explaining the solution.

https://github.com/AFNetworking/AFNetworking/issues/393

基本上，AFNetworking不支持此功能。由开发人员根据具体情况实施如下所示（取自Matt Thompson在github上的回答）

Basically, AFNetworking doesn't support this functionality. It is left to the developer to implement on a case by case basis as shown below (taken from Matt Thompson's answer on github)

- (void)downloadFileRetryingNumberOfTimes:(NSUInteger)ntimes 
                              success:(void (^)(id responseObject))success 
                              failure:(void (^)(NSError *error))failure
{
    if (ntimes <= 0) {
        if (failure) {
            NSError *error = ...;
            failure(error);
        }
    } else {
        [self getPath:@"/path/to/file" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
            if (success) {
                success(...);
            }
        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            [self downloadFileRetryingNumberOfTimes:ntimes - 1 success:success failure:failure];
        }];
    }
}

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