Hitting erros when using local and remote port forwarding

[ZhouMM92]

Hi,I am currently writing an application and then using the port forwarding. but I get errors when disconnecting from the SSHClient. The version are:

jdk: 1.8.0_381 
SSHJ: 0.31.0

And when I call the close() method in SSHJProxyGateWay.java, I hit erros when gatewaySession.disconnect() is called ,the erros in log are as follows:

2024-12-24 11:00:14.763 [http-nio-8880-exec-4]-INFO -net.schmizz.sshj.transport.TransportImpl - Disconnected - BY_APPLICATION
2024-12-24 11:00:22.851 [http-nio-8880-exec-4]-INFO -net.schmizz.sshj.connection.channel.direct.LocalPortForwarder - Closing listener on /127.0.0.1:52229
2024-12-24 11:00:22.852 [http-nio-8880-exec-4]-INFO -net.schmizz.sshj.transport.TransportImpl - Disconnected - BY_APPLICATION
2024-12-24 11:00:22.853 [chan2soc]-ERROR-net.schmizz.sshj.common.StreamCopier - In pipe from < ChannelInputStream for Channel #0 > to java.net.SocketOutputStream@7d79d57c
net.schmizz.sshj.transport.TransportException: Disconnected
	at net.schmizz.sshj.transport.TransportImpl.disconnect(TransportImpl.java:428)
	at net.schmizz.sshj.transport.TransportImpl.disconnect(TransportImpl.java:419)
	at net.schmizz.sshj.transport.TransportImpl.disconnect(TransportImpl.java:414)
	at net.schmizz.sshj.SSHClient.disconnect(SSHClient.java:435)
	at com.SSHJProxyGateWay.close(SSHJProxyGateWay.java:80)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:750)
2024-12-24 11:00:27.850 [sockmon]-ERROR-net.schmizz.concurrent.Promise - <<copyDone>> woke to: net.schmizz.sshj.transport.TransportException: [BY_APPLICATION] Disconnected

I am starting the local port forwarder in a separate thread. The main codes are as follows:

proxy.java:

	int proxyPort = 0;
        SSHClient proxyssh = new SSHClient();
        proxyssh.addHostKeyVerifier(new PromiscuousVerifier());
        proxyssh.connect(gateWayInfo.getIp(),gateWayInfo.getPort());
        proxyssh.authPassword(gateWayInfo.getUserName(),gateWayInfo.getPassword());
        Parameters params = new Parameters("127.0.0.1", 0, parentProxyInfo.getIp(), parentProxyInfo.getPort());
        final ServerSocket ss = new ServerSocket();
        ss.setReuseAddress(true);
        ss.bind(new InetSocketAddress(params.getLocalHost(), params.getLocalPort()));
        SSHJPortForwarder portForwarder = new SSHJPortForwarder(proxyssh,ss,params);
        Thread thread = new Thread(portForwarder);
        thread.start();
        proxyPort = ss.getLocalPort();
        SSHClient ssh = new SSHClient();
        ssh.addHostKeyVerifier(new PromiscuousVerifier());
        ssh.connect("127.0.0.1",proxyPort);
        ssh.authPassword(username,password);
        Session session = ssh.startSession();
	SSHJProxyGateWay proxyGateWay = new SSHJProxyGateWay(proxyssh,proxyPort,session,ssh);
        return proxyGateWay;

SSHJPortForwarder.java:

public  class SSHJPortForwarder extends Thread implements Closeable {
    private SSHClient sshClient;
    private ServerSocket serverSocket;
    private Parameters parameters;
    public  SSHJPortForwarder(SSHClient sshClient, ServerSocket serverSocket,Parameters parameters) {
        this.sshClient = sshClient;
        this.serverSocket = serverSocket;
        this.parameters = parameters;
    }
    @Override
    public void run() {
        sshClient.newLocalPortForwarder(parameters, serverSocket).listen();
    }

    @Override
    public void close() throws IOException {
        serverSocket.close();
        this.join();
    }
}

SSHJProxyGateWay.java

public class SSHJProxyGateWay {
    private SHClient gatewaySession;
    private Integer localPort;
    private Session proxySession;
    private SSHClient proxyCliet;

    public SSHJProxyGateWay(SSHClient gatewaySession, Integer localPort, Session proxySession,SSHClient proxyCliet){
        this.gatewaySession = gatewaySession;
        this.localPort = localPort;
        this.proxySession = proxySession;
        this.proxyCliet = proxyCliet;
    }

    public void close() {
        if (proxyCliet != null) {
            proxyCliet.disconnect();
        }
        if (gatewaySession != null && gatewaySession.isConnected()) {
            gatewaySession.disconnect();
        }
    }
}

I found that issue in Correctly disconnecting when using local and remote port forwarding #317 are the same, and has fixed it,but I still hit the erros.So,any help with working out why this is happening would be greatly appreciated.

@hierynomus