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https://issues.apache.org/jira/browse/NET-700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17334398#comment-17334398
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EDMUND ROBERT TODD commented on NET-700:
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Has anything changed re the SSL/TLS encryption? I'm going to do some tests with
regular FTP.
> FTPSClient FTP File transfer, failure on Android 11
> ---------------------------------------------------
>
> Key: NET-700
> URL: https://issues.apache.org/jira/browse/NET-700
> Project: Commons Net
> Issue Type: Bug
> Components: FTP
> Environment: Android 8, 9 and 10 work OK, 11 does not. Standard
> phones (mostly Samsung), an A40 has Android 11 on it.
> Reporter: EDMUND ROBERT TODD
> Priority: Major
>
> I have an Android app which does, among other things, FTP uploads and
> downloads with a file server. Up to Android 10, all is fine, but I'm getting
> problems with Android 11.
> I have opened a FileStream. Available shows the right byte count, and a read
> returns a byte array with the right data in it, so I'm pointing in the right
> place and my Android/Java app can handle it fine. A FTPSClient (3.8.0)
> storeFile creates a file on the server, but the data is totally corrupt. The
> application also locks, the storeFile never returns until I am forced off the
> server. It's all in a try/catch, with enough catches to choke an elephant.
> All files are in a folder within my application 'sandbox'. As I said, my Java
> code can handle the file.
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