使用AFNetworking的AFHTTPRequestOperation读取状态行（状态代码和原因短语） [英] Read status line (status code and reason phrase) using AFNetworking's AFHTTPRequestOperation
问题描述
我正在从iOS应用程序中的 ASIHTTPRequest 切换到 AFNetworking 。
I am switching from ASIHTTPRequest to AFNetworking in an iOS application.
RF2616（HTTP / 1.1）通过状态代码和原因短语的组合定义了状态行。有时服务器会在此原因短语中添加一些特定的信息，我发现ASIHTTPRequest允许我通过以下方式轻松访问它很方便
RF2616 (HTTP/1.1) defines a "status-line" by the combination of "Status Code" and "Reason Phrase". Sometimes the server adds some specific information in this "Reason Phrase" and I found it rather handy that ASIHTTPRequest allowed me to access it easily via
ASIHTTPRequest *request = ...;
NSString *reason = request.responseStatusMessage;
我的问题是我找不到使用的任何方法AFHTTPRequestOperation
My problem is that I can't find any way to do it with AFHTTPRequestOperation
NSMutableURLRequest *request = ...;
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
在操作的完成/失败块中，我都可以通过以下方式获取状态代码：
In both completion/failure block of the operation i can get the status code by doing:
int statusCode = [operation.response statusCode];
但是我找不到从哪里获得原因短语。
But I can't find where to get the "Reason Phrase".
关于StackOverflow的一些答案表明它应该位于 [operation.response allHeaderFields] 的条目之一中但事实并非如此。
Some answers on StackOverflow suggest that it would be located in one of the entries of [operation.response allHeaderFields] but it's not.
此问题的答案<< 我可以访问原因短语吗？在HTTPHTTP状态行的NSHTTPURLResponse中 >>
建议更改服务器的行为，但这并不总是可用的选项。
An answer to this question << Can I access "Reason Phrase" from the HTTP Status-Line in NSHTTPURLResponse >> suggests changing how the server behaves but that's not always an available option.
有什么想法吗？
推荐答案
NSHTTPURLResponse 没有实现公开数据的方法，并且HTTP RFC不需要这样做。 AFNetworking使用 NSURLRequest / NSURLResponse ，因此AFNetworking也无法将其提供给您。另一方面，ASIHTTPRequest可以使用较低级别的 CFNetwork 框架。
NSHTTPURLResponse does not implement a method that exposes the data, and the HTTP RFC does not a require it to. AFNetworking uses NSURLRequest / NSURLResponse, and so AFNetworking cannot give it to you either. ASIHTTPRequest can, on the other hand, because it uses the lower-level CFNetwork framework.
其他答案，最好是将这些信息移到标题或正文中。
The advice given in the other answers, to move this information to your headers or body, is the best answer.
您还可以向Apple提出增强请求，和/或坚持使用ASIHTTPRequest。
You can also file an enhancement request with Apple, and / or stick with ASIHTTPRequest.
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