No way to stop a `mcp_session`

[wch]

Is there a way to stop an mcp_session in an R process, without stopping R? I couldn't find any documentation for that.

[shikokuchuo]

I've just realised that mcp_session() returns a random promise object (rather than invisible NULL as I thought). I think it could return the socket instead. Then all you'd need to do is to call close() on it.

[wch]

If I start a session by following the instructions and call mcp_session(), then the socket object won't be saved. It would still be useful to be able to close the session in that case. How about having a function that returns the currently running session, like get_mcp_session() or get_mcp_session_socket()? This assumes that there's at most one MCP session running -- if there can be more than one, then the function might be get_mcp_sessions().