Discovery flag need more clarification

[reyamir]

Describe the enhancement
I'm not sure this is a bug or just missing feature, when checking source code, I see a note about DISCOVERY flag for relay like this:

/// DISCOVERY means that relay has role to get metadata (i.e. events with kind 0 or 10002) of public keys
pub const DISCOVERY: Self = Self(1 << 5); // 32

But when query user's metadata, it only query from user's relays

2024-10-29T02:26:18.410230Z  INFO nostr_sdk::client::handler: Spawned client notification handler
2024-10-29T02:26:19.111540Z  INFO nostr_relay_pool::relay::inner: Connected to 'wss://relay.damus.io/'
2024-10-29T02:26:19.408644Z  INFO nostr_relay_pool::relay::inner: Connected to 'wss://purplepag.es/'
2024-10-29T02:26:20.307447Z  INFO nostr_relay_pool::relay::inner: Connected to 'wss://relay.nostr.net/'
2024-10-29T02:26:20.721583Z  INFO nostr_relay_pool::relay::inner: Connected to 'wss://relay.primal.net/'
Metadata: Metadata { name: Some("reya"), display_name: Some("reya"), about: Some("Interests:\n- Anime, manga and manhwa.\n- Game, mostly played RPG and 4X games, sometime played eroge.\nBuilding:\n- Lume: https://github.com/lumehq/lume\n- Coop: https://github.com/lumehq/coop"), website: Some("https://reya.su/"), picture: Some("https://image.nostr.build/9326c5eeea6eaa34de92df803e98b4970c6a8e19fcc6186d311d607d52a89368.jpg"), banner: None, nip05: Some("_@reya.su"), lud06: None, lud16: Some("reya@getalby.com"), custom: {"pubkey": String("126103bfddc8df256b6e0abfd7f3797c80dcc4ea88f7c2f87dd4104220b4d65f"), "displayName": String("reya")} }
Seen on: wss://relay.damus.io/
Seen on: wss://relay.nostr.net/
2024-10-29T02:26:20.962022Z  INFO nostr_relay_pool::pool::inner: Relay pool shutdown

Repo: https://github.com/reyamir/rust-nostr-debug

[yukibtc]

Thanks, I'll fix the doc. DISCOVERY relays are used only to query relays of users. All users related events will come from READ (the manually set relays) or INBOX relays.