Question : How to handle errors about tunnel-ssh HOT 1 CLOSED

discovered that the cause was the order of function calls.
The addListServer is called first, which sets the close event on the server.
This defines the process of closing the sshConnection when the server terminates.
*See below.

   function addListenerServer(server) {
            if (tunnelOptionsLocal.reconnectOnError) {
                server.on('error', async () => {
                    server = await createServer(serverOptions);
                    addListenerServer(server);
                });
            }
            server.on('connection', onConnectionHandler);
            server.on('close', () => sshConnection.end()); //The line that causes
   }

After that, addListerSshConnection is called.
However, if the ssh connection fails here, the SSH connection failure is first returned as a reject.
Then the Server's Close event is executed and an error occurs as it tries to close the non-existent sshConnection.
However, since it has already returned a Reject, it is not properly handled and the application seems to crash.

Therefore, I believe that creating the SSH tunnel first and then the ServerListener will solve this problem.

from tunnel-ssh.