know if a session has completed the execution of a command sent via RPC calls

[EmilioPanti]

Hi,
I would like to know if there is any way to know when a session has completed executing a command when using the (write) RPC calls specified here: https://github.com/rapid7/metasploit-framework/blob/master/lib/msf/core/rpc/v10/rpc_session.rb

So far the only (inefficient) solution I have found is to perform repeated reads on the session interspersed with a 1-second sleep: if for 5 consecutive reads (i.e., 5 seconds) I do not read any new bytes I consider the last written command terminated.