Feature Request: Add multiplexing functionality

[midasi]

It would be great to get multiplexing functionality in Tinyssh in order to reuse existing SSH connections for complex operations. We use this feature often in the context of rsync (ControlMaster option in SSH).

[Oppen]

That sounds to me like something that should be handled by a different program and the client application. It's not only extra complexity on something that should be auditable, but also not something that justifies the coupling when all SSH does is provide a tunnel AFAIR, so opening a connection to a different server via tinyssh should be doable instead.