VijayJoinGitHub opened a new issue, #396:
URL: https://github.com/apache/mina-sshd/issues/396
### Version
2.9.2
### Bug description
1. channel.open(); // takes time , around 579 milli seconds
2. channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED),
TimeUnit.SECONDS.toMillis(0)); // takes around
287 milli seconds.
In our case for a task completion we run 7 commands so each time 579 +
287 = 866 milli seconds for 7 times almost 6 seconds which is very much delay
to display information for front end.
attaching a sample code.
*****************************************************************************************************************************
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.security.KeyPair;
import java.util.Collection;
import java.util.EnumSet;
import java.util.Set;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import org.apache.sshd.client.SshClient;
import org.apache.sshd.client.auth.keyboard.UserInteraction;
import org.apache.sshd.client.channel.ChannelExec;
import org.apache.sshd.client.channel.ClientChannel;
import org.apache.sshd.client.channel.ClientChannelEvent;
import org.apache.sshd.client.future.AuthFuture;
import org.apache.sshd.client.future.ConnectFuture;
import org.apache.sshd.client.future.OpenFuture;
import org.apache.sshd.client.session.ClientSession;
import org.apache.sshd.common.channel.Channel;
import org.apache.sshd.common.session.Session;
import org.apache.sshd.common.util.io.output.NoCloseOutputStream;
public class SshUtilstest4 {
public static void main(String[] args) {
// TODO Auto-generated method stub
SshClient client = SshClient.setUpDefaultClient();
String command = "uname -a";
try {
// Open the client
client.start();
long defaultTimeout = 3600;
try (ClientSession session = client.connect("root", hostname,
22).verify(defaultTimeout, TimeUnit.SECONDS).getSession()) {
session.addPasswordIdentity("password");
session.auth().verify(defaultTimeout, TimeUnit.SECONDS);
try (ByteArrayOutputStream responseStream = new
ByteArrayOutputStream(); ByteArrayOutputStream errorStream = new
ByteArrayOutputStream();) { // to execute remote commands
ChannelExec channel = session.createExecChannel(command
+ "\\n");
channel.setOut(responseStream);
channel.setErr(errorStream);
long start = System.currentTimeMillis();
channel.open().await(); //.verify(defaultTimeout,
TimeUnit.SECONDS);
long end = System.currentTimeMillis();
System.out.println("Time take to to open a channel in
milli seconds=" + (end - start));
System.out.println("-------------------------------");
/*
try (OutputStream pipedIn = channel2.getInvertedIn()) {
pipedIn.write(command.getBytes("UTF-8"));
pipedIn.flush();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
System.out.println("Before to close channel
responseStream=" + responseStream);
long start2 = System.currentTimeMillis();
channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED),
TimeUnit.SECONDS.toMillis(0));
long end2 = System.currentTimeMillis();
System.out.println("Time take to close the channel by
server in milli seconds =" + (end2 - start2));
System.out.println("After closing the channel
responseStream22=" + responseStream);
// return responseStream.toString();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
*****************************************************************************************************************************
out put :
Time take to to open a channel in milli seconds=579
-------------------------------
Before to close channel responseStream=
Time take to close the channel by server in milli seconds =287
After closing the channel responseStream22=Linux sudheer-rhel7
3.10.0-1160.90.1.el7.x86_64 #1 SMP Fri Mar 17 08:39:44 UTC 2023 x86_64 x86_64
x86_64 GNU/Linux
### Actual behavior
is this expected behaviour ?
Are we missing any input like ptyconfiguration if yes could you please
provide me example .
### Expected behavior
If this is existing behaviour could you please make this better .
previously we are using ganymede which is very much fast total 7 commands
can be run in 1 or 1+ seconds only , But with apache mina sshd is takes almost
6 seconds which is time consuming one for us.
### Relevant log output
_No response_
### Other information
_No response_
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
