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https://issues.apache.org/jira/browse/SSHD-1237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17483352#comment-17483352
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Lyor Goldstein commented on SSHD-1237:
--------------------------------------
We already have a {{KeepAliveHandler}} in place by default that answers all
{{keepalive@{*}{*}}} *or {{keep-alive@}}* requests. However, it is registered
only at the +server+ side. I believe one can add it as a global request handler
to the client as well:
{code:java}
SshClient client = SshClient.setupDefaultClient();
List<RequestHandler<ConnectionService>> oldHandlers =
client.getGlobalRequestHandlers(
List<RequestHandler<ConnectionService>> handlers = new ArrayList<>();
if (GenericUtils.isNotEmpty(oldHandlers)) {
handlers.add(oldHandlers);
}
handlers.add(KeepAliveHandler.INSTANCE);
client.setGlobalRequestHandlers(handlers);
{code}
I remember vaguely that we decided not to this by default, though cannot
remember why...
> SftpClient logs warnings on keepalive messages
> ----------------------------------------------
>
> Key: SSHD-1237
> URL: https://issues.apache.org/jira/browse/SSHD-1237
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 2.8.0
> Reporter: Jens Grassel
> Assignee: Lyor Goldstein
> Priority: Minor
>
> Hi,
> we just noticed that using the default SshClient we get lots of warning
> messages in our logs about keep alive requests like this:
> {noformat}
> 08:55:32.122 [sshd-SshClient[40b05dd]-nio2-thread-2] WARN
> o.a.s.s.c.i.DefaultSftpClient$SftpChannelSubsystem -
> handleUnknownChannelRequest(SftpChannelSubsystem[id=0,
> recipient=0]-ClientSessionImpl[XXX@XXX/XXX:22][sftp]) Unknown channel
> request: keepal...@openssh.com[want-reply=true]
> {noformat}
> We're using the {{SshClient.setUpDefaultClient()}} function then create our
> session and finally use the {{createSftpClient(session)}} function on a
> SftpClientFactory.
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