# Enabling gossip

The simplest way to enable inbox/outbox (gossip) is to use the JIT engine, as it does everything automatically.

  final ndkConfig = NdkConfig(
    engine: NdkEngine.JIT,
    cache: cache,
    eventSigner: eventSigner,
    eventVerifier: eventVerifier,
  );

  final ndk = Ndk(ndkConfig);

For more granular control you can use the RELAY_SETS engine.

NdkEngine.RELAY_SETS,

To make use of gossip you need to pass a RelaySet to the usecase.

Relay sets

../../usecases/relay-sets/

# Broadcast using Outbox

When you use ndk without getting nip65 data first, you will get a warning like:

broadcast - could not find nip65 data for ${eventToPublish.pubKey}, using DEFAULT_BOOTSTRAP_RELAYS for now.
Please ensure nip65Data exists to use the outbox model => UserRelayLists use case

When nip65 data is in the cache ndk picks it up automatically. To populate the cache, you can use the UserRelayLists use case.

await ndk.userRelayLists.getSingleUserRelayList("<pubKey>");

You don't have to save the result, it's enough to call the method so the data is in the cache.

# new account

If you are creating a new account, you can use the UserRelayLists use case to set the RelaySet for the new account.
The data will be published to the nostr network and saved in the cache.

await ndk.userRelayLists.setInitialUserRelayList(UserRelayList(
 refreshedTimestamp: 0, // ok to init with 0
 createdAt: 0, // ok to init with 0
 pubKey: "<pubKey>",
 relays: {
      "wss://relay.readonly.example": ReadWriteMarker.readOnly,
      "wss://relay.writeonly.example": ReadWriteMarker.writeOnly,
      "wss://relay.readwrite.example": ReadWriteMarker.readWrite,
 },
))