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58 lines
2.4 KiB
58 lines
2.4 KiB
import type { AbstractRelay } from 'nostr-tools/abstract-relay' |
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import type { EventTemplate, VerifiedEvent } from 'nostr-tools' |
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function readNip42Challenge(relay: AbstractRelay): string | undefined { |
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return (relay as unknown as { challenge?: string }).challenge |
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} |
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/** |
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* Relays send `CLOSED` with an `auth-required` prefix when NIP-42 authentication is needed. |
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* Match upstream jumble `master`: `reason.startsWith('auth-required')` — do **not** require `:`; |
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* some relays omit it. |
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*/ |
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export function isRelayAuthRequiredCloseReason(reason: string): boolean { |
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return reason.trim().toLowerCase().startsWith('auth-required') |
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} |
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/** Publish / pool errors when the relay requires NIP-42 before accepting EVENT. */ |
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export function isRelayAuthRequiredErrorMessage(message: string): boolean { |
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return /auth-required/i.test(message) |
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} |
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/** Socket dropped between AUTH and EVENT, or nostr-tools {@link SendingOnClosedConnection}. */ |
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export function isRelayConnectionClosedError(err: unknown): boolean { |
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if (err != null && typeof err === 'object' && 'name' in err) { |
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const name = String((err as { name: unknown }).name) |
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if (name === 'SendingOnClosedConnection') return true |
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} |
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const msg = err instanceof Error ? err.message : String(err) |
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return /SendingOnClosedConnection|on a closed connection|relay connection closed|websocket closed/i.test(msg) |
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} |
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/** nostr-tools default when {@link Subscription.close} runs from the client. */ |
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export function isRelaySubscriptionClosedByCaller(reason: string): boolean { |
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return reason.trim() === 'closed by caller' |
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} |
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/** |
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* Some relays send `CLOSED` (auth-required) in the same tick as or slightly before the `AUTH` challenge |
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* is applied; {@link AbstractRelay.auth} throws if `challenge` is still empty. Wait briefly for the frame. |
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*/ |
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export async function authenticateNip42Relay( |
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relay: AbstractRelay, |
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signAuthEvent: (evt: EventTemplate) => Promise<VerifiedEvent>, |
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options?: { challengeWaitMs?: number; pollMs?: number } |
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): Promise<string> { |
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const challengeWaitMs = options?.challengeWaitMs ?? 4000 |
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const pollMs = options?.pollMs ?? 25 |
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const deadline = Date.now() + challengeWaitMs |
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while (!readNip42Challenge(relay) && Date.now() < deadline) { |
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await new Promise((r) => setTimeout(r, pollMs)) |
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} |
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if (!readNip42Challenge(relay)) { |
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throw new Error( |
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"can't perform auth, no challenge was received (timed out waiting for relay AUTH message)" |
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) |
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} |
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return relay.auth(signAuthEvent) |
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}
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