https://terianp.tistory.com/178
https://github.com/SeJonJ/Spring-WebSocket-WebRTC-Chatting
https://velog.io/@devstefancho/obs-RTMP-서버로-Live-Streaming
https://velog.io/@van1164/streaming-8-rtmp
https://github.com/d3b0nair/rtmp-streaming-on-react