ios - AWS S3 上传适用于模拟器，但不适用于设备

Question

我遇到了一个有趣的问题。尝试将文件上传到 AWS S3，它在模拟器上运行时以及在连接的设备( Debug模式)上运行时都能完美运行。但是当我打包应用程序并将其部署到设备时，它不起作用。我不断收到“请求超时”消息。

这是我的代码，

- (void)uploadFileAtPath:(NSString *)filePath completionHandler:(void (^)(NSString *, NSError *))handler {
    NSString *fileName = [filePath lastPathComponent];
    AWSS3GetPreSignedURLRequest *getPreSignedURLRequest = [AWSS3GetPreSignedURLRequest new];
    getPreSignedURLRequest.bucket = self.bucketName;
    getPreSignedURLRequest.key = fileName;
    getPreSignedURLRequest.HTTPMethod = AWSHTTPMethodPUT;
    getPreSignedURLRequest.expires = [NSDate dateWithTimeIntervalSinceNow:3600];

    NSString *fileContentTypeStr = @"application/zip";
    getPreSignedURLRequest.contentType = fileContentTypeStr;

    [[[AWSS3PreSignedURLBuilder defaultS3PreSignedURLBuilder] getPreSignedURL:getPreSignedURLRequest]
     continueWithBlock:^id(AWSTask *task) {

         if (task.error) {
             NSLog(@"Error: %@",task.error);
         } else {

             NSURL *presignedURL = task.result;

             NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:presignedURL];
             request.cachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
             [request setHTTPMethod:@"PUT"];
             [request setValue:fileContentTypeStr forHTTPHeaderField:@"Content-Type"];
             [request setHTTPBody:[NSData dataWithContentsOfFile:filePath]];

             NSURLSessionConfiguration* config = [NSURLSessionConfiguration defaultSessionConfiguration];
             NSURLSession * session = [NSURLSession sessionWithConfiguration:config delegate:nil delegateQueue:nil];

             NSURLSessionDataTask* uploadTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
                 if (error) {
                     NSLog(@"URL Session Task Failed: %@", [error localizedDescription]);
                 }
                 else {
                     NSLog(@"URL Session Task Succeeded: HTTP %ld", ((NSHTTPURLResponse*)response).statusCode);

                 }
                 handler([[((NSHTTPURLResponse*)response).URL.absoluteString componentsSeparatedByString:@"?"] firstObject], error);

             }];
             [uploadTask resume];
         }

         return nil;
     }];
}

这是我得到的错误(混淆了敏感部分)-

Error: The request timed out.,

UserInfo: {
   NSErrorFailingURLKey = "https://s3.amazonaws.com/bucketname/file-2-10-2015-10-13PM.zip?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIHY7KKHBLYOPMTPA%2F20151003%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20151003T051306Z&X-Amz-Expires=3599&X-Amz-SignedHeaders=content-type%3Bhost&X-Amz-Signature=504e1f5083116as09dc6a04c3b4152816a8d9e8bccff8f4ea0cbss9fcdc21eac";
   NSErrorFailingURLStringKey = "https://s3.amazonaws.com/bucketname/file-2-10-2015-10-13PM.zip?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIHY7KKHBLYOPMTPA%2F20151003%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20151003T051306Z&X-Amz-Expires=3599&X-Amz-SignedHeaders=content-type%3Bhost&X-Amz-Signature=504e1f5083116as09dc6a04c3b4152816a8d9e8bccff8f4ea0cbss9fcdc21eac";
   NSLocalizedDescription = "The request timed out.";
   NSUnderlyingError = "Error Domain=kCFErrorDomainCFNetwork Code=-1001 \"(null)\" UserInfo={_kCFStreamErrorDomainKey=4, _kCFStreamErrorCodeKey=-2102}";
   "_kCFStreamErrorCodeKey" = "-2102";
   "_kCFStreamErrorDomainKey" = 4;
}

我不知道这里出了什么问题!非常感谢帮助。当设备连接到 Xcode 时，我还获取了 URL 并通过 cURL 上传了文件。 FWIW，这也行!

Answer 1

折腾了2天，终于找到问题所在了!这是我没有发布的代码部分，但这是我初始化 AWS 客户端的方式。

    AWSStaticCredentialsProvider *cp = [[AWSStaticCredentialsProvider alloc] initWithAccessKey:accesskey secretKey:secretKey];
    AWSServiceConfiguration* config = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1 credentialsProvider:cp];
    AWSServiceManager.defaultServiceManager.defaultServiceConfiguration = config;

现在，我正在使用另一个库，它做完全相同的事情，但对不同的存储桶使用不同的凭据。由于这个其他库是在我的代码之后被调用的，所以我在上传文件时遇到了问题。现在，为什么错误是 Request Timed Out 而不是 Invalid Credentials，我还没有找到。

我把初始化代码改成了这个——

    AWSStaticCredentialsProvider *cp = [[AWSStaticCredentialsProvider alloc] initWithAccessKey:accesskey secretKey:secretKey];
    AWSServiceConfiguration* config = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1 credentialsProvider:cp];
    [AWSS3TransferManager registerS3TransferManagerWithConfiguration:config forKey:AWSLogFilesUploaderKey];

并像这样获得了 AWSS3TransferManager 的实例 --

AWSS3TransferManager* tm = [AWSS3TransferManager S3TransferManagerForKey:AWSLogFilesUploaderKey];

然后一切都很顺利!