Is an improved implementation of JSch (http://www.jcraft.com/jsch/, a pure Java implementation of SSH2) with support for the Java Platform Module System.
An version of ChannelShell than not use an InputStream for send data to server. Instead that, method send(byte[]) must be used.
It's behavior was changed for allowing to execute an Runnable instead send the original keepalive message. This Runnable can be defined with Session#setCustomSendKeepAliveMsg(Runnable) method. If Runnable isn't defined, original keepalive message will be sending.