java.lang.ArrayIndexOutOfBoundsException with jsch version 0.2.18

[swathimr]

I am using JSCH to connect to SFTP with high traffic and recently updated the library from com.jcraft. We saw this error recently and in local environment I am not able to reproduce the issue.

Can you please let me know whats causing this ?

[norrisjeremy]

You have a bug in your code.
The lines where you are calling JSch.setConfig("server_host_key", ...) and JSch.setConfig("PubkeyAcceptedAlgorithms", ...), you are constantly appending ,ssh-rsa,ssh-dss over and over to them every time you call your getConnection() method.

[swathimr]

I followed this listed here
https://github.com/mwiede/jsch?tab=readme-ov-file#why-do-ssh-rsa-type-keys-not-work-with-this-jsch-fork-and-my-server

[norrisjeremy]

JSch.setConfig() are static methods that act on global static state.
If you need to change this on a per-session basis, then you should use session.setConfig(), so that it doesn't constantly change global static state.

[swathimr]

okay I will try that. Does this issue occur only with the heavy load or multiple connects ?

[norrisjeremy]

Hi @swathimr,

This has nothing to do with heavy load or multiple connects: your code is simply flawed.

Thanks,
Jeremy