I configured RAP following this tutorial: https://docs.moodle.org/21/en/Moodle_Language_Lab#RAP_Installation But I cannot understand where the Red5 server default web folder locates. I installed Red 5 1.0.8 in /opt/red5-server, and installed the OFLAdemo. I can access http://****:5080/demos/ofla_demo.html, so I just copied RAP to /opt/red5-server/webapps/ just like those demos.
Now, When I run http://***/mod/languagelab/raptest.php, It shows HTTP Status 404 - /test.php