smallstep-certificates/autocert/examples/hello-mtls/py-gunicorn/gunicorn.conf

bind = '0.0.0.0:443'
workers = 2
accesslog = '-'

# mTLS configuration with TLSv1.2 and requiring and validating client
# certificates
ssl_version = 5 # ssl.PROTOCOL_TLSv1_2
cert_reqs = 2   # ssl.CERT_REQUIRED
ciphers = 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256'
ca_certs = '/var/run/autocert.step.sm/root.crt'
certfile = '/var/run/autocert.step.sm/site.crt'
keyfile = '/var/run/autocert.step.sm/site.key'