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https://issues.apache.org/jira/browse/SSHD-1113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lyor Goldstein resolved SSHD-1113.
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Resolution: Won't Fix
> Please protect from shooting your own foot
> ------------------------------------------
>
> Key: SSHD-1113
> URL: https://issues.apache.org/jira/browse/SSHD-1113
> Project: MINA SSHD
> Issue Type: Improvement
> Affects Versions: 2.5.1
> Reporter: Björn Kautler
> Priority: Major
>
> One of the cases I use MINA SSHD for is to "tail" a remote log file locally.
> This log file sometimes does not see an update for more than 10 minutes.
> This means the {{IDLE_TIMEOUT}} kicked in and closed the session.
> So I've set the {{IDLE_TIMEOUT}} to {{-1}} to have it disabled.
> Unfortunately that only gave me 15 more seconds until then the
> {{NIO2_READ_TIMEOUT}} kicked in.
> So I tried to also disable this one on the session which did not work at all.
> Through debugging I found out that this timeout is only read from the
> non-simple client and not from the session.
> So I switched to the non-simple client and set it there which worked.
> So much for the context.
> It would already be nice if there were some protection that tells you that
> you set a property that will not have any effect where you set it, but I
> guess that will not work / be done.
> Actually after I indeed got it working, I read that it is better to prevent
> those timeouts by activating heartbeat sending and that it is as easy as
> calling {{session.setSessionHeartbeat(IGNORE, MINUTES, 1)}} on the session.
> I thought great, even easier, switched back to the simple client and called
> that method on the session. Unfortunately it did not work at all.
> So again by debugging I found out, that is must be set on the session before
> the auth is done as it is only evaluated at that time once.
> So I again switched back to the non-simple client and set the heartbeat
> before doing the {{auth}} call. This worked perfectly fine and now the
> connection stays open, even if the log file sees no update in a long time
> like needed.
> It would be nice if there were some self-shooting protections, like an error
> if you try to call {{setSessionHeartbeat}} too late, or maybe the method not
> being available or usable when using the simple client, or maybe it should
> even work, adding a heartbeat even if the session was started already instead
> of only starting the heartbeating on session auth.
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