chore: update dependency com.hierynomus:sshj to v0.39.0 (#1506)

gradle/libs.versions.toml

@@ -38,7 +38,7 @@ mysqlConnector = "9.0.0"
 # general
 oshi = "6.6.4"
 vavr = "0.10.4"
-sshj = "0.38.0"
+sshj = "0.39.0"
 aerogel = "2.1.0"
 awsSdk = "2.28.11"
 unirest = "4.4.4"

modules/storage-sftp/src/main/java/eu/cloudnetservice/modules/sftp/sshj/ActiveHeartbeatKeepAliveProvider.java

@@ -19,10 +19,7 @@
 import lombok.NonNull;
 import net.schmizz.keepalive.KeepAlive;
 import net.schmizz.keepalive.KeepAliveProvider;
-import net.schmizz.sshj.common.Message;
-import net.schmizz.sshj.common.SSHPacket;
 import net.schmizz.sshj.connection.ConnectionImpl;
-import net.schmizz.sshj.transport.TransportException;
 
 public final class ActiveHeartbeatKeepAliveProvider extends KeepAliveProvider {
 
@@ -31,29 +28,8 @@ public final class ActiveHeartbeatKeepAliveProvider extends KeepAliveProvider {
 
   @Override
   public @NonNull KeepAlive provide(@NonNull ConnectionImpl connection) {
-    var keepAlive = new HeartbeatKeepAlive(connection);
+    var keepAlive = KeepAliveProvider.HEARTBEAT.provide(connection);
     keepAlive.setKeepAliveInterval(HEARTBEAT_DELAY_SECONDS);
     return keepAlive;
   }
-
-  private static final class HeartbeatKeepAlive extends KeepAlive {
-
-    public HeartbeatKeepAlive(@NonNull ConnectionImpl conn) {
-      super(conn, "cloudnet-ssh-heartbeater");
-    }
-
-    @Override
-    protected void doKeepAlive() throws TransportException {
-      // when the server wants a strict key exchange, no other packets are allowed
-      // to be sent in that time interval (KEX_INIT must be the first packet). As it's
-      // very unlikely that a heartbeat is required during the timeframe anyway, we just
-      // don't execute the heartbeat until the key exchange is completed.
-      // Done by ensuring that the service is set. This means that the key
-      // exchange is done and the connection is up.
-      var transport = this.conn.getTransport();
-      if (this.conn.equals(transport.getService())) {
-        transport.write(new SSHPacket(Message.IGNORE));
-      }
-    }
-  }
 }