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From David Kocher <>
Subject Re: [Component] Commons NET SSL reuse support
Date Sun, 19 Dec 2010 17:43:00 GMT
The problem is that in the SSL implementation in Java, SSL sessions are cached by the peer
hostname and port number. Because a second socket is opened for the data connection for LIST
and file transfers to a different port, a new SSL session is created instead of reusing the
session from the control connection.

I don't have a solution for this issue, see also for
a discussion of implementation details.


On 08.12.2010, at 11:00, Aidan Diffey wrote:

> Hello all.
> Can you tell me if FTPSClient supports ssl reuse?  I am trying to connect to
> an FTPES server (vsftpd) with require_ssl_reuse=YES.
> Kind Regards

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