FOR your configuration:
The lines below are incorrect.
1.http://ip:8443/index.php
2.https://ip/index.php
The lines below are correct.
3.https://ip:8443/index.php
Reasons
1.
http://ip:8443/index.php
This is making a HTTP request to port 8443, and since you have SSL serving from port 8443, the client and server communication is not going to happen.
2.
https://ip/index.php
This is making an SSL request on port 443 which is the default.
3.
https://ip:8443/index.php
This is a correct one as we are requesting SSL content from port 8443 which you have setup.
Regards,
Nilesh.