Auto reconnect

[wds4]

Trigger an automatic reconnection attempt whenever a relay disconnects. By default, this functionality is off. Activate it using autoReconnect like this:

<NostrProvider relayUrls={relayUrls} debug={true} autoReconnect={true} >
  <App />
</NostrProvider>

I'm wondering whether I should move the logic for triggering the reconnection attempt to OnDisconnectFunc. Let me know if that would make more sense. We might want to make the logic more complex, e.g. stop attempting after N failed attempts. See this issue for my longer discussion.

[t4t5]

This is great, thanks for the PR! 🙌

We probably want to have a default max number of retries to prevent infinite loops too.

One thing I'm not sure about is whether onDisconnect should be called every time a disconnect happens (even if it successfully reconnects shortly after), or if it should only be called once the max retries have failed (so that the client can show an error message).

I think I'm leaning towards the latter, what are your thoughts?

[wds4]

Are you wondering when to call onDisconnectCallback within the relay.on("disconnect", () => { block? Perhaps we could call onDisconnectCallback after each individual disconnect (as it does now) but make a new function called something like onMaxDisconnectsCallback after the max retries have been reached?

(I'm still new with typescript so bear with me if I seem to be speaking gibberish at any point! lol)

[wds4]

We could include a parameter like this:

<NostrProvider relayUrls={relayUrls} debug={true} autoReconnect={true} reconnectAttemptLimit={reconnectAttemptLimit} >
  <App />
</NostrProvider>

btw we will need a way to keep track of disconnects and other relay stats, along the lines of this.

[wds4]

I'm closing this pull request, as I find that onDisconnectCallback as described by @aussedatlo here solves the issue of auto reconnect, and has the added benefit that it will be straightforward for relay-specific stats like number of disconnects to be managed completely by the client without relying on nostr-react to do it.