Answered: How to receive bytes sent from client with SshChannel.Send() function on server?

If you need to process raw input stream bytes, you can use the approach described in the following forum post:

• How to execute an external process using Rebex SSH Server?

In your scenario, you don't need to execute an external, but the with using e.Action in ShellCommand event handler along with grabbing the raw input/output streams using SshConsole.GetInputStream() and SshConsole.GetOutputStream() would be suitable as well.