I guess another way to restrict number of sessions is by the user who is logging in. This should not be hard to implement in an Ftplet or in your custom UserManager (login controller). If you get a user/login request with a name that is currently logged in, send an error back and close the connection.
Hope this helps. On Tue, Nov 8, 2011 at 10:07 PM, Sachin Shetty <sshe...@egnyte.com> wrote: > Sai, > > Yes, it is file zilla and you are right, its opening new control > connections. > > But limiting based on IPs is very restrictive one since a lot of users > could > be behind the same firewall or proxy. > > Thanks > Sachin > > > -----Original Message----- > From: Sai Pullabhotla [mailto:sai.pullabho...@jmethods.com] > Sent: Wednesday, November 09, 2011 2:10 AM > To: ftpserver-users@mina.apache.org > Subject: Re: Limiting no of data connections per control connection > > Is it not already supported due to the limitation we currently have in the > code - in which only control connections are asynchronous and data > connections are synchronous? This means while a file transfer command (get) > is running control connection won't accept and/or process new commands that > the client might send. > > Also, I want to make sure that the original poster actually noticed this > behavior with some FTP client. I do know that some clients like FileZilla > open upto a specific number of connections to do simultaneous transfers. > However, they do it by opening a brand new control channel, not one control > channel and multiple data channels. If this is the case, then we do have a > special permission on the user to indicate how many concurrent logins are > allowed from a specific IP. > > Hope it makes sense/helps. Feel free to correct me if I got it all > incorrect. > > Thanks. > > On Tue, Nov 8, 2011 at 2:09 PM, Niklas Gustavsson > <nik...@protocol7.com>wrote: > > > On Tue, Nov 8, 2011 at 2:31 PM, Sachin Shetty <sshe...@egnyte.com> > wrote: > > > It seems FTP clients have a way to run multiple concurrent transfers. > We > > > want to limit a user session to only initiate one data connection per > > > session at a time. Is there a way to configure that in Apache FTP? > > > > This is unfortunately not supported out of the box, but should be > > fairly straight forward to implement in IODataConnectionFactory. > > Should you get to do it, I'm sure we would be interested in including > > it in the core project if that's a possibility. > > > > /niklas > > > > > > -- > Sai Pullabhotla > > -- Sai Pullabhotla
