1) Investigate, if ssh-protocol supports the following:
* Parallel work of several channels (for example, executing a command plus using sftp at the same time from another thread) in one connection.
* Reverse sftp: client A connects to a server B, something happens at B (for example, a subsystem is run), which uses A as a sftp-server.
After a quick look at the ssh specifications (and Python Paramiko implementation), I think the both answers are "yes, should be possible". Your task is to provide the proof of "yes" or explain why "no".
2) If "yes", provide sample programs which are the proof. The programming language and libraries are not much important, but Python plus Paramiko are desired.
## Deliverables
1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.
2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables):
a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment.
b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request.
3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement).
## Platform
unix