root@instance-1:~# cat /var/www/app/index.py
import sys

def application(environ, start_response):
body = sys.version.encode("utf-8")
status = "200 OK"
headers = [('Content-type','text/plain')]
start_response(status, headers)
return body


root@instance-1:~# curl -X PUT -d @/root/unit_json/start.json --unix-socket /var/run/control.unit.sock http://localhost/
{
"error": "Failed to apply new configuration."
}
root@instance-1:~#