Failed to connect to higher version OpenSSL server after configuring KeepAliveInterval

[2211898719]

ssh.getConnection().getKeepAlive().setKeepAliveInterval(60);

net.schmizz.sshj.transport.TransportException: strict KEX violation: unexpected packet type 2 (seqnr 1) at net.schmizz.sshj.transport.TransportImpl.gotDisconnect(TransportImpl.java:548) ~[sshj-0.38.0.jar:na] at net.schmizz.sshj.transport.TransportImpl.handle(TransportImpl.java:500) ~[sshj-0.38.0.jar:na] at net.schmizz.sshj.transport.Decoder.decode(Decoder.java:113) ~[sshj-0.38.0.jar:na] at net.schmizz.sshj.transport.Decoder.received(Decoder.java:200) ~[sshj-0.38.0.jar:na] at net.schmizz.sshj.transport.Reader.run(Reader.java:60) ~[sshj-0.38.0.jar:na]

<dependency> <groupId>com.hierynomus</groupId> <artifactId>sshj</artifactId> <version>0.38.0</version> </dependency>

[2211898719]

[derklaro]

I had the same issue. Fixed by using a custom KeepAlive sender that just waits until the key exchange is completed before starting the hearbeat. This seems to be fixed with the KEEP_ALIVE keepalive strategy, but not when using HEARTBEAT:

sshj/src/main/java/net/schmizz/keepalive/KeepAliveRunner.java

Lines 53 to 59 in c0d1519

	// Ensure the service is set... This means that the key exchange is done and the connection is up.
	if (conn.equals(conn.getTransport().getService())) {
	emptyQueue(queue);
	checkMaxReached(queue);
	queue.add(conn.sendGlobalRequest("[email protected]", true, new byte[0]));
	}
	}

[2211898719]

How to customize it