Keep getting 'the request timed out' when try to download files

Wesley L.3

I am trying to download a whole folder (all sub folders and files under this folder should be downloaded) on iOS, but I keep getting 'the request timed out' error, like this:

Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={NSUnderlyingError=0x14f988de0 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_kCFStreamErrorCodeKey=-2102, _kCFStreamErrorDomainKey=4}}, NSErrorFailingURLStringKey=https://content.dropboxapi.com/1/files/auto/Camera Uploads/2015-10-21 18.02.10.jpg, NSErrorFailingURLKey=https://content.dropboxapi.com/1/files/auto/Camera Uploads/2015-10-21 18.02.10.jpg, _kCFStreamErrorDomainKey=4, _kCFStreamErrorCodeKey=-2102, NSLocalizedDescription=The request timed out.}

Is it because that there are a lot of HTTP GET requests happened in a small time interval so that the dropbox server banned the request? How can I do to prevent it? What is the time interval that can bypass the dropbox server so that I can download a whole folder altogether?

Greg-DB

This isn't a result of the Dropbox servers themselves banning the request, but this can be caused by attempting too many requests simultaneously, causing them to take too long and then timeout. You should make sure to only attempt a limited number of requests at a time. I've heard developers choosing a limit of 4, but the best number for you may depend on the specifics of your app, use case, etc.