Mqtt vs. WebSocket vs. http2/3(grpc QUIC) which on...

# android

[Ravi]

Mqtt vs. WebSocket vs. http2/3(grpc QUIC) which one is better to build a chat app in android/ios whose monthly active user base of 100 million. Facing some issues with MQTT libs as they are pretty old java libs, if anyone can refer latest Kotlin/coroutines supported libs, it would be great