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Posted to dev@mina.apache.org by "min yun law (Jira)" <ji...@apache.org> on 2020/12/03 16:47:00 UTC
[jira] [Reopened] (SSHD-1085) channel.waitFor() get stuck when run
reboot command
[ https://issues.apache.org/jira/browse/SSHD-1085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
min yun law reopened SSHD-1085:
-------------------------------
this is not a way to solve the issue for the following API:
channel.waitFor(REMOTE_COMMAND_WAIT_EVENTS, 0L); the channel cannot handle the TCP connection correctly internally
> channel.waitFor() get stuck when run reboot command
> ---------------------------------------------------
>
> Key: SSHD-1085
> URL: https://issues.apache.org/jira/browse/SSHD-1085
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 2.5.1
> Environment: linux
> Reporter: min yun law
> Priority: Minor
>
> Trying to run linux command "reboot" by mina sshd to remote node, the node is in reboot, but the ClientChannel object still keep open, not in closed status, Here is the logic code in my project:
>
> {code:java}
> String command = "reboot";
> ChannelExec channel = clientSession.createExecChannel(command);
> if(!channel.isClosed())
> {
> ByteArrayOutputStream out = new ByteArrayOutputStream(); ByteArrayOutputStream err = new ByteArrayOutputStream(); channel.setOut(out);
> channel.setErr(err);
> channel.open().await(); //this passed
> //follow call will cause stuck
> Collection<ClientChannelEvent> waitMask = channel.waitFor(REMOTE_COMMAND_WAIT_EVENTS, 0L);
> String outputStr = new String(out.toByteArray(), StandardCharsets.UTF_8);
> //some case this will throw runtime exception
> int exitStatus = channel.getExitStatus();
> }
>
> {code}
>
> So why the ChannelExec cannot get the correct channel status when remote node is rebooting?
>
>
>
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