In order to provide secure communications between the RPC consumer and the RPC server, TLS is utilized. You must create a X.509 Server certificate for this to work.
openssl genrsa -out server.key 4096 openssl req -new -x509 -key server.key -out server.cert -days 730
Once you have generated the private key and certificate, copy the certificate (cert.pem) to the machine the RPC consumer is operating from.
$ openssl rand -hex 32 493152a14843198555759262f1bd767235789aebdcc5f1b1f8f2cd3a965c8c7a
When you launch the automator script, be sure that the RPCSERVER_TOKEN environment variable is set.
export RPCSERVER_TOKEN='GENERATED_TOKEN'
Be sure that you have generated the X.509 Server Certificate and exported the RPCSERVER_TOKEN environment variable, then:
$ python3 automator.py --tlscert cert.cert --tlskey server.key