AFNetworking 2.0中的setTaskDidReceiveAuthenticationChallengeBlock

问题描述：

有人知道如何在AFNetworking 2.0版中处理身份验证吗？我尝试了以下但没有成功。该块被调用（我在那里有一个NSLog），但是响应仍然是401错误

Anybody know how to handle authentication in the 2.0 version of AFNetworking? I tried the below without success. The block is getting called (I had an NSLog in there) but the response is still a 401 error

[self setTaskDidReceiveAuthenticationChallengeBlock:^NSURLSessionAuthChallengeDisposition(NSURLSession *session, NSURLSessionTask *task, NSURLAuthenticationChallenge *challenge, NSURLCredential *__autoreleasing *credential) {
    *credential = [[NSURLCredential alloc] initWithUser:username password:password persistence:NSURLCredentialPersistenceForSession];
    return NSURLSessionAuthChallengeUseCredential;
}];

答

我认为这是AFNetworking 2.0中的错误。这是实现：

I think this is a bug in AFNetworking 2.0. Here is the implementation:

- (void)URLSession:(NSURLSession *)session
              task:(NSURLSessionTask *)task
didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
 completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
{
    NSURLSessionAuthChallengeDisposition disposition = NSURLSessionAuthChallengePerformDefaultHandling;
    __block NSURLCredential *credential = nil;

    if (self.taskDidReceiveAuthenticationChallenge) {
        disposition = self.taskDidReceiveAuthenticationChallenge(session, task, challenge, &credential);
    } else {
        [self URLSession:session didReceiveChallenge:challenge completionHandler:completionHandler];
        return;
    }

    if (completionHandler) {
        completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, credential);
    }
}

请注意，即使您指定了 NSURLSessionAuthChallengeUseCredential ，AFNetworking传回 NSURLSessionAuthChallengePerformDefaultHandling ，其中指出挑战的默认处理-好像未实现此委托；凭据参数将被忽略。

Note that even though you're specifying NSURLSessionAuthChallengeUseCredential, AFNetworking is passing back NSURLSessionAuthChallengePerformDefaultHandling, which states "Default handling for the challenge - as if this delegate were not implemented; the credential parameter is ignored."

AFNetworking 2.0中的setTaskDidReceiveAuthenticationChallengeBlock

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