SSH Client Disconnects on Receiving Keepalive Requests about mina-sshd HOT 4 CLOSED

Setting a "global request" handler for keep-alives has only an effect on global requests. It has no effect on channel requests. OpenSSH prefers to send keep-alive messages a channel requests if a channel is open, and then expects a failure reply.

Apache MINA SSHD actually behaves like OpenSSH expects; the only problem is that it logs this warning. That's issue SSHD-1237.

I don't think your problem is related to this warning. But I don't know what might cause your problem; it looks like your code is reading from a ChannelAsyncInputStream when that stream is being closed. Why it is being closed I cannot tell.

from mina-sshd.

Setting a "global request" handler for keep-alives has only an effect on global requests. It has no effect on channel requests. OpenSSH prefers to send keep-alive messages a channel requests if a channel is open, and then expects a failure reply.

Apache MINA SSHD actually behaves like OpenSSH expects; the only problem is that it logs this warning. That's issue SSHD-1237.

I don't think your problem is related to this warning. But I don't know what might cause your problem; it looks like your code is reading from a ChannelAsyncInputStream when that stream is being closed. Why it is being closed I cannot tell.

I think I understand why the connection was actively disconnected because the server's sshd_config is configured with ClientAliveInterval 600. Regarding your second issue, to resolve the warning logs like o.a.sshd.client.channel.ChannelShell - handleUnknownChannelRequest(ChannelShell[id=0, recipient=0]-ClientSessionImpl[admin@/10.252.146.106:61122]) Unknown channel request: [email protected][want-reply=true], I looked at the Jira link you provided. This means the KeepAliveHandler.INSTANCE I set in globalRequestHandlers did not affect individual channels. If I want it to work and avoid these warnings, do I need to add a request handler for each channel and implement logic similar to KeepAliveHandler.INSTANCE within them?

from mina-sshd.

Basically yes, but see #492. The next version of Apache MINA SSHD will handle these channel requests and no longer log the warning.

As I wrote, I don't think your problem is related to this warning.

from mina-sshd.

Basically yes, but see #492. The next version of Apache MINA SSHD will handle these channel requests and no longer log the warning.

As I wrote, I don't think your problem is related to this warning.

thanks

from mina-sshd.