Hello Surya,
You're welcome!
If you are opening the HTTPS port with "icm/server_port_X = PROT=HTTPS, ...", that is how the log will look like. Opening the port with "PROT=ROUTER" will make the logging impossible.
Notice that "HTTP/1.1" is just the HTTP protocol version used. It does not relate to whether the user is using HTTP or HTTPS to connect.
The 304 and 200 are standard HTTP return codes.
Regards,
Isaías