iOS AWS v2 S3 Transfer Manager must use specified endpoint

Question

I am developing an iOS app using AWS as its backend. Since I expect users to be world wide, I need to switch where the app should download photos in order to increase latenc

Answer 1

Whenever the Amazon AWS Mobile SDK displays an unclear warning in the console, turn on verbose logging to debug:

(Swift 3) AWSLogger.default().logLevel = .verbose
(Swift 2) AWSLogger.defaultLogger().logLevel = .Verbose

…to reveal more information about what S3 buckets, regions, endpoints etc. are being used.

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I found this particularly useful to find out what was happening when trying to switch between buckets, because the error message

… Endpoint=bucket-ap-northeast-1.s3-ap-northeast-1.amazonaws.com, Message=The bucket you are attempting to access must be addressed using the specified endpoint. …

…doesn't provide much information about the actual/current transfer manager configuration.