Hi Gerry, On Sa 05 Feb 2011 00:09:52 CET Gerry Reno wrote:
What's interesting is that it presents the menu and the process is shown as "running" so then your "suspend" it and "resume" it and you still get the "remote proxy closed the connection" error and NX proxy shows "aborting" but it does resume the session. Very confusing to users but at least they get their session back.
By what I read the issue really occurs around the port forwarding request. I try to sketch the mechanism...
o client: sets up a forwarding tunnel to the server (for nxproxy traffic
which in our discussed scenario)
o server: thinks the tunnel is already/still set up (by the former request)
and denies the tunnel
-> here PyHoca-GUI tries to push a cancel_port_forward request to the SSH
daemon which sometimes works but sometimes doesn't
o the x2goclient does not realize the failed tunnel (PyHoca-GUI
btw. does and
reports an error)
o thus, x2goclient continues as planned
o client: call of server-side x2goresume-session script (which fails because
of the missing port forwarding tunnel)
o client: from x2goresum-session script the x2goresume script is called
(which updates the database and states that the new session is running
although the session resuming failed)
The problem is that old port forwarding requests on the SSH server do
not get properly cancelled by the clients. If a request does not get
canceled the port is blocked/busy and another SSH client instance
cannot request a port forwarding on this server port.
Hope that sheds more light on the situation... If you can find an SSHd option that could fix this behaviour this would be really great!!!
Greetings, Mike -- DAS-NETZWERKTEAM mike gabriel, dorfstr. 27, 24245 barmissen fon: +49 (4302) 281418, fax: +49 (4302) 281419 GnuPG Key ID 0xB588399B mail: [email protected], http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb
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