I need to make one to many android java

How to implement?
14

3.image3
it giving me this logcat error:

    2020-09-11 15:43:44.079 11742-11857/io.openvidu.openvidu_android E/SessionActivity:
 Error POST /api/sessions
    java.net.SocketTimeoutException:
***failed to connect to /192.168.1.6 (port 4443) from /192.168.1.2 (port 34347)*** 
after 10000ms
        at libcore.io.IoBridge.connectErrno(IoBridge.java:185)
        at libcore.io.IoBridge.connect(IoBridge.java:129)