pubsubgrpc provides a LibP2P PubSub framework that can be used as a stand-alone gRPC pubsub server and API, or as a module/component of existing gRPC servers to provide LibP2P PubSub functionality. It uses proto3 and borrows some ideas from libp2p/go-libp2p-daemon and libp2p/go-libp2p-pubsub.