how to modify webRTC message format

See more:

Javascript

peer-to-peer

WebRTC

, +

Hello,

I am using a script refereed from this topic Video Conferencing using WebRTC[^] .
This simply peer-to-peer video connection between two clients, the connection order is random, now I want to modify the script that, the connection should appear only when tags (few words, can be viewed as the interest of the user) provided by the users before connecting the video. One user should be connected with the user with same tags and also if the user left the tags field blank, then the connection should be random again.

Thanks.