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doc.go
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// This package defines a protocol that is used to broadcast shares to peers over a pubsub network.
//
// This protocol runs on a rudimentary floodsub network is primarily a pubsub protocol
// that broadcasts and listens for shares over a pubsub topic.
//
// The pubsub topic used by this protocol is:
//
// "{networkID}/eds-sub/v0.1.0"
//
// where networkID is the network ID of the celestia-node that is running the protocol. (e.g. "arabica")
//
// # Usage
//
// To use this protocol, you must first create a new `shrexsub.PubSub` instance by:
//
// pubsub, err := shrexsub.NewPubSub(ctx, host, networkID)
//
// where host is the libp2p host that is running the protocol, and networkID is the network ID of the celestia-node
// that is running the protocol.
//
// After this, you can start the pubsub protocol by:
//
// err := pubsub.Start(ctx)
//
// Once you have started the `shrexsub.PubSub` instance, you can broadcast a share by:
//
// err := pubsub.Broadcast(ctx, notification)
//
// where `notification` is of type [shrexsub.Notification].
//
// and `DataHash` is the hash of the share that you want to broadcast, and `Height` is the height of the share.
//
// You can also subscribe to the pubsub topic by:
//
// sub, err := pubsub.Subscribe(ctx)
//
// and then receive notifications by:
//
// for {
// select {
// case <-ctx.Done():
// sub.Cancel()
// return
// case notification, err := <-sub.Next():
// // handle notification or err
// }
// }
//
// You can also manipulate the received pubsub messages by using the [PubSub.AddValidator] method:
//
// pubsub.AddValidator(validator ValidatorFn)
//
// where `validator` is of type [shrexsub.ValidatorFn] and `Notification` is the same as above.
//
// You can also stop the pubsub protocol by:
//
// err := pubsub.Stop(ctx)
package shrexsub