Reverse Connecting SSH (via concentrator) over WebSocket
This is not an officially supported A1comms product; it was developed as a demonstration project on a one-off basis.
The "endpoint" connects outbound to the "concentrator" via a secure WebSocket.
The "concentrator" starts a local listening socket and forwards connections to it back to the remote "endpoint".
The "endpoint" in turn has an SSH server that accepts those connections and provides a shell & exec functionality.