subscribeMap() now sends multiple filters to the same relay in the same REQ.

because the initiative to get rid of multiple filters went down.

README.md

@@ -4,7 +4,7 @@ Tools for developing [Nostr](https://github.com/fiatjaf/nostr) clients.
 
 Only depends on _@scure_ and _@noble_ packages.
 
-This package is only providing lower-level functionality. If you want more higher-level features, take a look at [Nostrify](https://nostrify.dev), or if you want an easy-to-use fully-fledged solution that abstracts the hard parts of Nostr and makes decisions on your behalf, take a look at [NDK](https://github.com/nostr-dev-kit/ndk) and [@snort/system](https://www.npmjs.com/package/@snort/system).
+This package is only providing lower-level functionality. If you want higher-level features, take a look at [@nostr/gadgets](https://jsr.io/@nostr/gadgets) which is based on this library and expands upon it and has other goodies (it's only available on jsr).
 
 ## Installation
 
@@ -133,6 +133,14 @@ import WebSocket from 'ws'
 useWebSocketImplementation(WebSocket)
 ```
 
+You can enable regular pings of connected relays with the `enablePing` option. This will set up a heartbeat that closes the websocket if it doesn't receive a response in time. Some platforms don't report websocket disconnections due to network issues, and enabling this can increase reliability.
+
+```js
+import { SimplePool } from 'nostr-tools/pool'
+
+const pool = new SimplePool({ enablePing: true })
+```
+
 ### Parsing references (mentions) from a content based on NIP-27
 
 ```js
@@ -161,8 +169,10 @@ for (let block of nip27.parse(evt.content)) {
     case 'video':
     case 'audio':
       console.log("it's a media url:", block.url)
+      break
     case 'relay':
       console.log("it's a websocket url, probably a relay address:", block.url)
+      break
     default:
       break
   }
@@ -171,14 +181,24 @@ for (let block of nip27.parse(evt.content)) {
 
 ### Connecting to a bunker using NIP-46
 
+`BunkerSigner` allows your application to request signatures and other actions from a remote NIP-46 signer, often called a "bunker". There are two primary ways to establish a connection, depending on whether the client or the bunker initiates the connection.
+
+A local secret key is required for the client to communicate securely with the bunker. This key should generally be persisted for the user's session.
+
+```js
+import { generateSecretKey } from '@nostr/tools/pure'
+
+const localSecretKey = generateSecretKey()
+```
+
+### Method 1: Using a Bunker URI (`bunker://`)
+
+This is the bunker-initiated flow. Your client receives a `bunker://` string or a NIP-05 identifier from the user. You use `BunkerSigner.fromBunker()` to create an instance, which returns immediately. For the **initial connection** with a new bunker, you must explicitly call `await bunker.connect()` to establish the connection and receive authorization.
+
 ```js
-import { generateSecretKey, getPublicKey } from '@nostr/tools/pure'
 import { BunkerSigner, parseBunkerInput } from '@nostr/tools/nip46'
 import { SimplePool } from '@nostr/tools/pool'
 
-// the client needs a local secret key (which is generally persisted) for communicating with the bunker
-const localSecretKey = generateSecretKey()
-
 // parse a bunker URI
 const bunkerPointer = await parseBunkerInput('bunker://abcd...?relay=wss://relay.example.com')
 if (!bunkerPointer) {
@@ -187,7 +207,7 @@ if (!bunkerPointer) {
 
 // create the bunker instance
 const pool = new SimplePool()
-const bunker = new BunkerSigner(localSecretKey, bunkerPointer, { pool })
+const bunker = BunkerSigner.fromBunker(localSecretKey, bunkerPointer, { pool })
 await bunker.connect()
 
 // and use it
@@ -203,6 +223,47 @@ const event = await bunker.signEvent({
 await signer.close()
 pool.close([])
 ```
+> **Note on Reconnecting:** Once a connection has been successfully established and the `BunkerPointer` is stored, you do **not** need to call `await bunker.connect()` on subsequent sessions. 
+
+### Method 2: Using a Client-generated URI (`nostrconnect://`)
+
+This is the client-initiated flow, which generally provides a better user experience for first-time connections (e.g., via QR code). Your client generates a `nostrconnect://` URI and waits for the bunker to connect to it.
+
+`BunkerSigner.fromURI()` is an **asynchronous** method. It returns a `Promise` that resolves only after the bunker has successfully connected. Therefore, the returned signer instance is already fully connected and ready to use, so you **do not** need to call `.connect()` on it.
+
+```js
+import { getPublicKey } from '@nostr/tools/pure'
+import { BunkerSigner, createNostrConnectURI } from '@nostr/tools/nip46'
+import { SimplePool } from '@nostr/tools/pool'
+
+const clientPubkey = getPublicKey(localSecretKey)
+
+// generate a connection URI for the bunker to scan
+const connectionUri = createNostrConnectURI({
+  clientPubkey,
+  relays: ['wss://relay.damus.io', 'wss://relay.primal.net'],
+  secret: 'a-random-secret-string', // A secret to verify the bunker's response
+  name: 'My Awesome App'
+})
+
+// wait for the bunker to connect
+const pool = new SimplePool()
+const signer = await BunkerSigner.fromURI(localSecretKey, connectionUri, { pool })
+
+// and use it
+const pubkey = await signer.getPublicKey()
+const event = await signer.signEvent({
+  kind: 1,
+  created_at: Math.floor(Date.now() / 1000),
+  tags: [],
+  content: 'Hello from a client-initiated connection!'
+})
+
+// cleanup
+await signer.close()
+pool.close([])
+```
+> **Note on Persistence:** This method is ideal for the initial sign-in. To allow users to stay logged in across sessions, you should store the connection details and use `Method 1` for subsequent reconnections. 
 
 ### Parsing thread from any note based on NIP-10
 

abstract-pool.ts

@@ -12,13 +12,15 @@ import type { Event, EventTemplate, Nostr, VerifiedEvent } from './core.ts'
 import { type Filter } from './filter.ts'
 import { alwaysTrue } from './helpers.ts'
 
-export type SubCloser = { close: () => void }
+export type SubCloser = { close: (reason?: string) => void }
 
 export type AbstractPoolConstructorOptions = AbstractRelayConstructorOptions & {}
 
 export type SubscribeManyParams = Omit<SubscriptionParams, 'onclose'> & {
   maxWait?: number
   onclose?: (reasons: string[]) => void
+  onauth?: (event: EventTemplate) => Promise<VerifiedEvent>
+  // Deprecated: use onauth instead
   doauth?: (event: EventTemplate) => Promise<VerifiedEvent>
   id?: string
   label?: string
@@ -30,6 +32,7 @@ export class AbstractSimplePool {
   public trackRelays: boolean = false
 
   public verifyEvent: Nostr['verifyEvent']
+  public enablePing: boolean | undefined
   public trustedRelayURLs: Set<string> = new Set()
 
   private _WebSocket?: typeof WebSocket
@@ -37,6 +40,7 @@ export class AbstractSimplePool {
   constructor(opts: AbstractPoolConstructorOptions) {
     this.verifyEvent = opts.verifyEvent
     this._WebSocket = opts.websocketImplementation
+    this.enablePing = opts.enablePing
   }
 
   async ensureRelay(url: string, params?: { connectionTimeout?: number }): Promise<AbstractRelay> {
@@ -47,7 +51,11 @@ export class AbstractSimplePool {
       relay = new AbstractRelay(url, {
         verifyEvent: this.trustedRelayURLs.has(url) ? alwaysTrue : this.verifyEvent,
         websocketImplementation: this._WebSocket,
+        enablePing: this.enablePing,
       })
+      relay.onclose = () => {
+        this.relays.delete(url)
+      }
       if (params?.connectionTimeout) relay.connectionTimeout = params.connectionTimeout
       this.relays.set(url, relay)
     }
@@ -59,24 +67,51 @@ export class AbstractSimplePool {
   close(relays: string[]) {
     relays.map(normalizeURL).forEach(url => {
       this.relays.get(url)?.close()
+      this.relays.delete(url)
     })
   }
 
   subscribe(relays: string[], filter: Filter, params: SubscribeManyParams): SubCloser {
-    return this.subscribeMap(
-      relays.map(url => ({ url, filter })),
-      params,
-    )
+    params.onauth = params.onauth || params.doauth
+
+    const request: { url: string; filter: Filter }[] = []
+    for (let i = 0; i < relays.length; i++) {
+      const url = normalizeURL(relays[i])
+      if (!request.find(r => r.url === url)) {
+        request.push({ url, filter: filter })
+      }
+    }
+
+    return this.subscribeMap(request, params)
   }
 
-  subscribeMany(relays: string[], filters: Filter[], params: SubscribeManyParams): SubCloser {
-    return this.subscribeMap(
-      relays.flatMap(url => filters.map(filter => ({ url, filter }))),
-      params,
-    )
+  subscribeMany(relays: string[], filter: Filter, params: SubscribeManyParams): SubCloser {
+    params.onauth = params.onauth || params.doauth
+
+    const request: { url: string; filter: Filter }[] = []
+    const uniqUrls: string[] = []
+    for (let i = 0; i < relays.length; i++) {
+      const url = normalizeURL(relays[i])
+      if (uniqUrls.indexOf(url) === -1) {
+        uniqUrls.push(url)
+        request.push({ url, filter: filter })
+      }
+    }
+
+    return this.subscribeMap(request, params)
   }
 
   subscribeMap(requests: { url: string; filter: Filter }[], params: SubscribeManyParams): SubCloser {
+    params.onauth = params.onauth || params.doauth
+
+    const grouped = new Map<string, Filter[]>()
+    for (const req of requests) {
+      const { url, filter } = req
+      if (!grouped.has(url)) grouped.set(url, [])
+      grouped.get(url)!.push(filter)
+    }
+    const groupedRequests = Array.from(grouped.entries()).map(([url, filters]) => ({ url, filters }))
+
     if (this.trackRelays) {
       params.receivedEvent = (relay: AbstractRelay, id: string) => {
         let set = this.seenOn.get(id)
@@ -124,9 +159,7 @@ export class AbstractSimplePool {
 
     // open a subscription in all given relays
     const allOpened = Promise.all(
-      requests.map(async ({ url, filter }, i) => {
-        url = normalizeURL(url)
-
+      groupedRequests.map(async ({ url, filters }, i) => {
         let relay: AbstractRelay
         try {
           relay = await this.ensureRelay(url, {
@@ -137,15 +170,15 @@ export class AbstractSimplePool {
           return
         }
 
-        let subscription = relay.subscribe([filter], {
+        let subscription = relay.subscribe(filters, {
           ...params,
           oneose: () => handleEose(i),
           onclose: reason => {
-            if (reason.startsWith('auth-required:') && params.doauth) {
+            if (reason.startsWith('auth-required: ') && params.onauth) {
               relay
-                .auth(params.doauth)
+                .auth(params.onauth)
                 .then(() => {
-                  relay.subscribe([filter], {
+                  relay.subscribe(filters, {
                     ...params,
                     oneose: () => handleEose(i),
                     onclose: reason => {
@@ -171,10 +204,10 @@ export class AbstractSimplePool {
     )
 
     return {
-      async close() {
+      async close(reason?: string) {
         await allOpened
         subs.forEach(sub => {
-          sub.close()
+          sub.close(reason)
         })
       },
     }
@@ -183,12 +216,14 @@ export class AbstractSimplePool {
   subscribeEose(
     relays: string[],
     filter: Filter,
-    params: Pick<SubscribeManyParams, 'label' | 'id' | 'onevent' | 'onclose' | 'maxWait' | 'doauth'>,
+    params: Pick<SubscribeManyParams, 'label' | 'id' | 'onevent' | 'onclose' | 'maxWait' | 'onauth' | 'doauth'>,
   ): SubCloser {
+    params.onauth = params.onauth || params.doauth
+
     const subcloser = this.subscribe(relays, filter, {
       ...params,
       oneose() {
-        subcloser.close()
+        subcloser.close('closed automatically on eose')
       },
     })
     return subcloser
@@ -196,13 +231,15 @@ export class AbstractSimplePool {
 
   subscribeManyEose(
     relays: string[],
-    filters: Filter[],
-    params: Pick<SubscribeManyParams, 'label' | 'id' | 'onevent' | 'onclose' | 'maxWait' | 'doauth'>,
+    filter: Filter,
+    params: Pick<SubscribeManyParams, 'label' | 'id' | 'onevent' | 'onclose' | 'maxWait' | 'onauth' | 'doauth'>,
   ): SubCloser {
-    const subcloser = this.subscribeMany(relays, filters, {
+    params.onauth = params.onauth || params.doauth
+
+    const subcloser = this.subscribeMany(relays, filter, {
       ...params,
       oneose() {
-        subcloser.close()
+        subcloser.close('closed automatically on eose')
       },
     })
     return subcloser
@@ -238,7 +275,11 @@ export class AbstractSimplePool {
     return events[0] || null
   }
 
-  publish(relays: string[], event: Event): Promise<string>[] {
+  publish(
+    relays: string[],
+    event: Event,
+    options?: { onauth?: (evt: EventTemplate) => Promise<VerifiedEvent> },
+  ): Promise<string>[] {
     return relays.map(normalizeURL).map(async (url, i, arr) => {
       if (arr.indexOf(url) !== i) {
         // duplicate
@@ -246,17 +287,26 @@ export class AbstractSimplePool {
       }
 
       let r = await this.ensureRelay(url)
-      return r.publish(event).then(reason => {
-        if (this.trackRelays) {
-          let set = this.seenOn.get(event.id)
-          if (!set) {
-            set = new Set()
-            this.seenOn.set(event.id, set)
+      return r
+        .publish(event)
+        .catch(async err => {
+          if (err instanceof Error && err.message.startsWith('auth-required: ') && options?.onauth) {
+            await r.auth(options.onauth)
+            return r.publish(event) // retry
           }
-          set.add(r)
-        }
-        return reason
-      })
+          throw err
+        })
+        .then(reason => {
+          if (this.trackRelays) {
+            let set = this.seenOn.get(event.id)
+            if (!set) {
+              set = new Set()
+              this.seenOn.set(event.id, set)
+            }
+            set.add(r)
+          }
+          return reason
+        })
     })
   }
 

abstract-relay.ts

@@ -7,9 +7,15 @@ import { Queue, normalizeURL } from './utils.ts'
 import { makeAuthEvent } from './nip42.ts'
 import { yieldThread } from './helpers.ts'
 
+type RelayWebSocket = WebSocket & {
+  ping?(): void
+  on?(event: 'pong', listener: () => void): any
+}
+
 export type AbstractRelayConstructorOptions = {
   verifyEvent: Nostr['verifyEvent']
   websocketImplementation?: typeof WebSocket
+  enablePing?: boolean
 }
 
 export class SendingOnClosedConnection extends Error {
@@ -26,19 +32,19 @@ export class AbstractRelay {
   public onclose: (() => void) | null = null
   public onnotice: (msg: string) => void = msg => console.debug(`NOTICE from ${this.url}: ${msg}`)
 
-  // this is exposed just to help in ndk migration, shouldn't be relied upon
-  public _onauth: ((challenge: string) => void) | null = null
-
   public baseEoseTimeout: number = 4400
   public connectionTimeout: number = 4400
   public publishTimeout: number = 4400
+  public pingFrequency: number = 20000
+  public pingTimeout: number = 20000
   public openSubs: Map<string, Subscription> = new Map()
+  public enablePing: boolean | undefined
   private connectionTimeoutHandle: ReturnType<typeof setTimeout> | undefined
 
   private connectionPromise: Promise<void> | undefined
   private openCountRequests = new Map<string, CountResolver>()
   private openEventPublishes = new Map<string, EventPublishResolver>()
-  private ws: WebSocket | undefined
+  private ws: RelayWebSocket | undefined
   private incomingMessageQueue = new Queue<string>()
   private queueRunning = false
   private challenge: string | undefined
@@ -52,6 +58,7 @@ export class AbstractRelay {
     this.url = normalizeURL(url)
     this.verifyEvent = opts.verifyEvent
     this._WebSocket = opts.websocketImplementation || WebSocket
+    this.enablePing = opts.enablePing
   }
 
   static async connect(url: string, opts: AbstractRelayConstructorOptions): Promise<AbstractRelay> {
@@ -105,29 +112,28 @@ export class AbstractRelay {
       this.ws.onopen = () => {
         clearTimeout(this.connectionTimeoutHandle)
         this._connected = true
+        if (this.enablePing) {
+          this.pingpong()
+        }
         resolve()
       }
 
       this.ws.onerror = ev => {
         clearTimeout(this.connectionTimeoutHandle)
         reject((ev as any).message || 'websocket error')
-        if (this._connected) {
-          this._connected = false
-          this.connectionPromise = undefined
-          this.onclose?.()
-          this.closeAllSubscriptions('relay connection errored')
-        }
+        this._connected = false
+        this.connectionPromise = undefined
+        this.onclose?.()
+        this.closeAllSubscriptions('relay connection errored')
       }
 
       this.ws.onclose = ev => {
         clearTimeout(this.connectionTimeoutHandle)
         reject((ev as any).message || 'websocket closed')
-        if (this._connected) {
-          this._connected = false
-          this.connectionPromise = undefined
-          this.onclose?.()
-          this.closeAllSubscriptions('relay connection closed')
-        }
+        this._connected = false
+        this.connectionPromise = undefined
+        this.onclose?.()
+        this.closeAllSubscriptions('relay connection closed')
       }
 
       this.ws.onmessage = this._onmessage.bind(this)
@@ -136,6 +142,53 @@ export class AbstractRelay {
     return this.connectionPromise
   }
 
+  private async waitForPingPong() {
+    return new Promise((res, err) => {
+      // listen for pong
+      ;(this.ws && this.ws.on && this.ws.on('pong', () => res(true))) || err("ws can't listen for pong")
+      // send a ping
+      this.ws && this.ws.ping && this.ws.ping()
+    })
+  }
+
+  private async waitForDummyReq() {
+    return new Promise((resolve, _) => {
+      // make a dummy request with expected empty eose reply
+      // ["REQ", "_", {"ids":["aaaa...aaaa"]}]
+      const sub = this.subscribe([{ ids: ['a'.repeat(64)] }], {
+        oneose: () => {
+          sub.close()
+          resolve(true)
+        },
+        eoseTimeout: this.pingTimeout + 1000,
+      })
+    })
+  }
+
+  // nodejs requires this magic here to ensure connections are closed when internet goes off and stuff
+  // in browsers it's done automatically. see https://github.com/nbd-wtf/nostr-tools/issues/491
+  private async pingpong() {
+    // if the websocket is connected
+    if (this.ws?.readyState === 1) {
+      // wait for either a ping-pong reply or a timeout
+      const result = await Promise.any([
+        // browsers don't have ping so use a dummy req
+        this.ws && this.ws.ping && this.ws.on ? this.waitForPingPong() : this.waitForDummyReq(),
+        new Promise(res => setTimeout(() => res(false), this.pingTimeout)),
+      ])
+      if (result) {
+        // schedule another pingpong
+        setTimeout(() => this.pingpong(), this.pingFrequency)
+      } else {
+        // pingpong closing socket
+        this.closeAllSubscriptions('pingpong timed out')
+        this._connected = false
+        this.onclose?.()
+        this.ws?.close()
+      }
+    }
+  }
+
   private async runQueue() {
     this.queueRunning = true
     while (true) {
@@ -233,7 +286,6 @@ export class AbstractRelay {
           return
         case 'AUTH': {
           this.challenge = data[1] as string
-          this._onauth?.(data[1] as string)
           return
         }
       }
@@ -256,16 +308,20 @@ export class AbstractRelay {
     if (this.authPromise) return this.authPromise
 
     this.authPromise = new Promise<string>(async (resolve, reject) => {
-      const evt = await signAuthEvent(makeAuthEvent(this.url, challenge))
-      const timeout = setTimeout(() => {
-        const ep = this.openEventPublishes.get(evt.id) as EventPublishResolver
-        if (ep) {
-          ep.reject(new Error('auth timed out'))
-          this.openEventPublishes.delete(evt.id)
-        }
-      }, this.publishTimeout)
-      this.openEventPublishes.set(evt.id, { resolve, reject, timeout })
-      this.send('["AUTH",' + JSON.stringify(evt) + ']')
+      try {
+        let evt = await signAuthEvent(makeAuthEvent(this.url, challenge))
+        let timeout = setTimeout(() => {
+          let ep = this.openEventPublishes.get(evt.id) as EventPublishResolver
+          if (ep) {
+            ep.reject(new Error('auth timed out'))
+            this.openEventPublishes.delete(evt.id)
+          }
+        }, this.publishTimeout)
+        this.openEventPublishes.set(evt.id, { resolve, reject, timeout })
+        this.send('["AUTH",' + JSON.stringify(evt) + ']')
+      } catch (err) {
+        console.warn('subscribe auth function failed:', err)
+      }
     })
     return this.authPromise
   }
@@ -318,6 +374,7 @@ export class AbstractRelay {
   public close() {
     this.closeAllSubscriptions('relay connection closed by us')
     this._connected = false
+    this.onclose?.()
     this.ws?.close()
   }
 

jsr.json

@@ -1,6 +1,6 @@
 {
   "name": "@nostr/tools",
-  "version": "2.14.1",
+  "version": "2.17.0",
   "exports": {
     ".": "./index.ts",
     "./core": "./core.ts",
@@ -42,9 +42,9 @@
     "./nip94": "./nip94.ts",
     "./nip98": "./nip98.ts",
     "./nip99": "./nip99.ts",
-    "./nip99": "./nipb7.ts",
+    "./nipb7": "./nipb7.ts",
     "./fakejson": "./fakejson.ts",
-    "./utils": "./utils.ts"
+    "./utils": "./utils.ts",
     "./signer": "./signer.ts"
   }
 }

nip19.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, test } from 'bun:test'
+// prettier-ignore
 import {
   decode,
   naddrEncode,

nip27.ts

@@ -90,35 +90,19 @@ export function* parse(content: string): Iterable<Block> {
           yield { type: 'text', text: content.substring(prevIndex, u - prefixLen) }
         }
 
-        if (
-          url.pathname.endsWith('.png') ||
-          url.pathname.endsWith('.jpg') ||
-          url.pathname.endsWith('.jpeg') ||
-          url.pathname.endsWith('.gif') ||
-          url.pathname.endsWith('.webp')
-        ) {
+        if (/\.(png|jpe?g|gif|webp)$/i.test(url.pathname)) {
           yield { type: 'image', url: url.toString() }
           index = end
           prevIndex = index
           continue
         }
-        if (
-          url.pathname.endsWith('.mp4') ||
-          url.pathname.endsWith('.avi') ||
-          url.pathname.endsWith('.webm') ||
-          url.pathname.endsWith('.mkv')
-        ) {
+        if (/\.(mp4|avi|webm|mkv)$/i.test(url.pathname)) {
           yield { type: 'video', url: url.toString() }
           index = end
           prevIndex = index
           continue
         }
-        if (
-          url.pathname.endsWith('.mp3') ||
-          url.pathname.endsWith('.aac') ||
-          url.pathname.endsWith('.ogg') ||
-          url.pathname.endsWith('.opus')
-        ) {
+        if (/\.(mp3|aac|ogg|opus)$/i.test(url.pathname)) {
           yield { type: 'audio', url: url.toString() }
           index = end
           prevIndex = index

nip29.ts

@@ -2,7 +2,7 @@ import { AbstractSimplePool } from './abstract-pool.ts'
 import { Subscription } from './abstract-relay.ts'
 import type { Event, EventTemplate } from './core.ts'
 import { fetchRelayInformation, RelayInformation } from './nip11.ts'
-import { AddressPointer, decode, NostrTypeGuard } from './nip19.ts'
+import { decode, NostrTypeGuard } from './nip19.ts'
 import { normalizeURL } from './utils.ts'
 
 /**

nip46.ts

@@ -5,7 +5,6 @@ import { getConversationKey, decrypt, encrypt } from './nip44.ts'
 import { NIP05_REGEX } from './nip05.ts'
 import { SimplePool } from './pool.ts'
 import { Handlerinformation, NostrConnect } from './kinds.ts'
-import type { RelayRecord } from './relay.ts'
 import { Signer } from './signer.ts'
 
 var _fetch: any
@@ -78,6 +77,114 @@ export async function queryBunkerProfile(nip05: string): Promise<BunkerPointer |
   }
 }
 
+export type NostrConnectParams = {
+  clientPubkey: string
+  relays: string[]
+  secret: string
+  perms?: string[]
+  name?: string
+  url?: string
+  image?: string
+}
+
+export type ParsedNostrConnectURI = {
+  protocol: 'nostrconnect'
+  clientPubkey: string
+  params: {
+    relays: string[]
+    secret: string
+    perms?: string[]
+    name?: string
+    url?: string
+    image?: string
+  }
+  originalString: string
+}
+
+export function createNostrConnectURI(params: NostrConnectParams): string {
+  if (!params.clientPubkey) {
+    throw new Error('clientPubkey is required.')
+  }
+  if (!params.relays || params.relays.length === 0) {
+    throw new Error('At least one relay is required.')
+  }
+  if (!params.secret) {
+    throw new Error('secret is required.')
+  }
+
+  const queryParams = new URLSearchParams()
+
+  params.relays.forEach(relay => {
+    queryParams.append('relay', relay)
+  })
+
+  queryParams.append('secret', params.secret)
+
+  if (params.perms && params.perms.length > 0) {
+    queryParams.append('perms', params.perms.join(','))
+  }
+  if (params.name) {
+    queryParams.append('name', params.name)
+  }
+  if (params.url) {
+    queryParams.append('url', params.url)
+  }
+  if (params.image) {
+    queryParams.append('image', params.image)
+  }
+
+  return `nostrconnect://${params.clientPubkey}?${queryParams.toString()}`
+}
+
+export function parseNostrConnectURI(uri: string): ParsedNostrConnectURI {
+  if (!uri.startsWith('nostrconnect://')) {
+    throw new Error('Invalid nostrconnect URI: Must start with "nostrconnect://".')
+  }
+
+  const [protocolAndPubkey, queryString] = uri.split('?')
+  if (!protocolAndPubkey || !queryString) {
+    throw new Error('Invalid nostrconnect URI: Missing query string.')
+  }
+
+  const clientPubkey = protocolAndPubkey.substring('nostrconnect://'.length)
+  if (!clientPubkey) {
+    throw new Error('Invalid nostrconnect URI: Missing client-pubkey.')
+  }
+
+  const queryParams = new URLSearchParams(queryString)
+
+  const relays = queryParams.getAll('relay')
+  if (relays.length === 0) {
+    throw new Error('Invalid nostrconnect URI: Missing "relay" parameter.')
+  }
+
+  const secret = queryParams.get('secret')
+  if (!secret) {
+    throw new Error('Invalid nostrconnect URI: Missing "secret" parameter.')
+  }
+
+  const permsString = queryParams.get('perms')
+  const perms = permsString ? permsString.split(',') : undefined
+
+  const name = queryParams.get('name') || undefined
+  const url = queryParams.get('url') || undefined
+  const image = queryParams.get('image') || undefined
+
+  return {
+    protocol: 'nostrconnect',
+    clientPubkey,
+    params: {
+      relays,
+      secret,
+      perms,
+      name,
+      url,
+      image,
+    },
+    originalString: uri,
+  }
+}
+
 export type BunkerSignerParams = {
   pool?: AbstractSimplePool
   onauth?: (url: string) => void
@@ -98,8 +205,9 @@ export class BunkerSigner implements Signer {
   }
   private waitingForAuth: { [id: string]: boolean }
   private secretKey: Uint8Array
-  private conversationKey: Uint8Array
-  public bp: BunkerPointer
+  // If the client initiates the connection, the two variables below can be filled in later.
+  private conversationKey!: Uint8Array
+  public bp!: BunkerPointer
 
   private cachedPubKey: string | undefined
 
@@ -109,23 +217,95 @@ export class BunkerSigner implements Signer {
    * @param remotePubkey - An optional remote public key. This is the key you want to sign as.
    * @param secretKey - An optional key pair.
    */
-  public constructor(clientSecretKey: Uint8Array, bp: BunkerPointer, params: BunkerSignerParams = {}) {
-    if (bp.relays.length === 0) {
-      throw new Error('no relays are specified for this bunker')
-    }
-
+  private constructor(clientSecretKey: Uint8Array, params: BunkerSignerParams) {
     this.params = params
     this.pool = params.pool || new SimplePool()
     this.secretKey = clientSecretKey
-    this.conversationKey = getConversationKey(clientSecretKey, bp.pubkey)
-    this.bp = bp
     this.isOpen = false
     this.idPrefix = Math.random().toString(36).substring(7)
     this.serial = 0
     this.listeners = {}
     this.waitingForAuth = {}
+  }
 
-    this.setupSubscription(params)
+  /**
+   * [Factory Method 1] Creates a Signer using bunker information (bunker:// URL or NIP-05).
+   * This method is used when the public key of the bunker is known in advance.
+   */
+  public static fromBunker(
+    clientSecretKey: Uint8Array,
+    bp: BunkerPointer,
+    params: BunkerSignerParams = {},
+  ): BunkerSigner {
+    if (bp.relays.length === 0) {
+      throw new Error('No relays specified for this bunker')
+    }
+
+    const signer = new BunkerSigner(clientSecretKey, params)
+
+    signer.conversationKey = getConversationKey(clientSecretKey, bp.pubkey)
+    signer.bp = bp
+
+    signer.setupSubscription(params)
+    return signer
+  }
+
+  /**
+   * [Factory Method 2] Creates a Signer using a nostrconnect:// URI generated by the client.
+   * In this method, the bunker initiates the connection by scanning the URI.
+   */
+  public static async fromURI(
+    clientSecretKey: Uint8Array,
+    connectionURI: string,
+    params: BunkerSignerParams = {},
+    maxWait: number = 300_000,
+  ): Promise<BunkerSigner> {
+    const signer = new BunkerSigner(clientSecretKey, params)
+    const parsedURI = parseNostrConnectURI(connectionURI)
+    const clientPubkey = getPublicKey(clientSecretKey)
+
+    return new Promise((resolve, reject) => {
+      const timer = setTimeout(() => {
+        sub.close()
+        reject(new Error(`Connection timed out after ${maxWait / 1000} seconds`))
+      }, maxWait)
+
+      const sub = signer.pool.subscribe(
+        parsedURI.params.relays,
+        { kinds: [NostrConnect], '#p': [clientPubkey] },
+        {
+          onevent: async (event: NostrEvent) => {
+            try {
+              const tempConvKey = getConversationKey(clientSecretKey, event.pubkey)
+              const decryptedContent = decrypt(event.content, tempConvKey)
+
+              const response = JSON.parse(decryptedContent)
+
+              if (response.result === parsedURI.params.secret) {
+                clearTimeout(timer)
+                sub.close()
+
+                signer.bp = {
+                  pubkey: event.pubkey,
+                  relays: parsedURI.params.relays,
+                  secret: parsedURI.params.secret,
+                }
+                signer.conversationKey = getConversationKey(clientSecretKey, event.pubkey)
+                signer.setupSubscription(params)
+                resolve(signer)
+              }
+            } catch (e) {
+              console.warn('Failed to process potential connection event', e)
+            }
+          },
+          onclose: () => {
+            clearTimeout(timer)
+            reject(new Error('Subscription closed before connection was established.'))
+          },
+          maxWait,
+        },
+      )
+    })
   }
 
   private setupSubscription(params: BunkerSignerParams) {
@@ -238,13 +418,6 @@ export class BunkerSigner implements Signer {
     return this.cachedPubKey
   }
 
-  /**
-   * @deprecated removed from NIP
-   */
-  async getRelays(): Promise<RelayRecord> {
-    return JSON.parse(await this.sendRequest('get_relays', []))
-  }
-
   /**
    * Signs an event using the remote private key.
    * @param event - The event to sign.
@@ -298,7 +471,7 @@ export async function createAccount(
 ): Promise<BunkerSigner> {
   if (email && !EMAIL_REGEX.test(email)) throw new Error('Invalid email')
 
-  let rpc = new BunkerSigner(localSecretKey, bunker.bunkerPointer, params)
+  let rpc = BunkerSigner.fromBunker(localSecretKey, bunker.bunkerPointer, params)
 
   let pubkey = await rpc.sendRequest('create_account', [username, domain, email || ''])
 

nip47.test.ts

@@ -5,6 +5,16 @@ import { decrypt } from './nip04.ts'
 import { NWCWalletRequest } from './kinds.ts'
 
 describe('parseConnectionString', () => {
+  test('returns pubkey, relay, and secret if connection string has double slash', () => {
+    const connectionString =
+      'nostr+walletconnect://b889ff5b1513b641e2a139f661a661364979c5beee91842f8f0ef42ab558e9d4?relay=wss%3A%2F%2Frelay.damus.io&secret=71a8c14c1407c113601079c4302dab36460f0ccd0ad506f1f2dc73b5100e4f3c'
+    const { pubkey, relay, secret } = parseConnectionString(connectionString)
+
+    expect(pubkey).toBe('b889ff5b1513b641e2a139f661a661364979c5beee91842f8f0ef42ab558e9d4')
+    expect(relay).toBe('wss://relay.damus.io')
+    expect(secret).toBe('71a8c14c1407c113601079c4302dab36460f0ccd0ad506f1f2dc73b5100e4f3c')
+  })
+
   test('returns pubkey, relay, and secret if connection string is valid', () => {
     const connectionString =
       'nostr+walletconnect:b889ff5b1513b641e2a139f661a661364979c5beee91842f8f0ef42ab558e9d4?relay=wss%3A%2F%2Frelay.damus.io&secret=71a8c14c1407c113601079c4302dab36460f0ccd0ad506f1f2dc73b5100e4f3c'

nip47.ts

@@ -9,8 +9,8 @@ interface NWCConnection {
 }
 
 export function parseConnectionString(connectionString: string): NWCConnection {
-  const { pathname, searchParams } = new URL(connectionString)
-  const pubkey = pathname
+  const { host, pathname, searchParams } = new URL(connectionString)
+  const pubkey = pathname || host
   const relay = searchParams.get('relay')
   const secret = searchParams.get('secret')
 

nip57.test.ts

@@ -1,112 +1,7 @@
-import { describe, test, expect, mock } from 'bun:test'
+import { describe, test, expect } from 'bun:test'
 import { finalizeEvent } from './pure.ts'
 import { getPublicKey, generateSecretKey } from './pure.ts'
-import {
-  getSatoshisAmountFromBolt11,
-  getZapEndpoint,
-  makeZapReceipt,
-  makeZapRequest,
-  useFetchImplementation,
-  validateZapRequest,
-} from './nip57.ts'
-import { buildEvent } from './test-helpers.ts'
-
-describe('getZapEndpoint', () => {
-  test('returns null if neither lud06 nor lud16 is present', async () => {
-    const metadata = buildEvent({ kind: 0, content: '{}' })
-    const result = await getZapEndpoint(metadata)
-
-    expect(result).toBeNull()
-  })
-
-  test('returns null if fetch fails', async () => {
-    const fetchImplementation = mock(() => Promise.reject(new Error()))
-    useFetchImplementation(fetchImplementation)
-
-    const metadata = buildEvent({ kind: 0, content: '{"lud16": "name@domain"}' })
-    const result = await getZapEndpoint(metadata)
-
-    expect(result).toBeNull()
-    expect(fetchImplementation).toHaveBeenCalledWith('https://domain/.well-known/lnurlp/name')
-  })
-
-  test('returns null if the response does not allow Nostr payments', async () => {
-    const fetchImplementation = mock(() => Promise.resolve({ json: () => ({ allowsNostr: false }) }))
-    useFetchImplementation(fetchImplementation)
-
-    const metadata = buildEvent({ kind: 0, content: '{"lud16": "name@domain"}' })
-    const result = await getZapEndpoint(metadata)
-
-    expect(result).toBeNull()
-    expect(fetchImplementation).toHaveBeenCalledWith('https://domain/.well-known/lnurlp/name')
-  })
-
-  test('returns the callback URL if the response allows Nostr payments', async () => {
-    const fetchImplementation = mock(() =>
-      Promise.resolve({
-        json: () => ({
-          allowsNostr: true,
-          nostrPubkey: 'pubkey',
-          callback: 'callback',
-        }),
-      }),
-    )
-    useFetchImplementation(fetchImplementation)
-
-    const metadata = buildEvent({ kind: 0, content: '{"lud16": "name@domain"}' })
-    const result = await getZapEndpoint(metadata)
-
-    expect(result).toBe('callback')
-    expect(fetchImplementation).toHaveBeenCalledWith('https://domain/.well-known/lnurlp/name')
-  })
-})
-
-describe('makeZapRequest', () => {
-  test('throws an error if amount is not given', () => {
-    expect(() =>
-      // @ts-expect-error
-      makeZapRequest({
-        profile: 'profile',
-        event: null,
-        relays: [],
-        comment: '',
-      }),
-    ).toThrow()
-  })
-
-  test('throws an error if profile is not given', () => {
-    expect(() =>
-      // @ts-expect-error
-      makeZapRequest({
-        event: null,
-        amount: 100,
-        relays: [],
-        comment: '',
-      }),
-    ).toThrow()
-  })
-
-  test('returns a valid Zap request', () => {
-    const result = makeZapRequest({
-      profile: 'profile',
-      event: 'event',
-      amount: 100,
-      relays: ['relay1', 'relay2'],
-      comment: 'comment',
-    })
-    expect(result.kind).toBe(9734)
-    expect(result.created_at).toBeCloseTo(Date.now() / 1000, 0)
-    expect(result.content).toBe('comment')
-    expect(result.tags).toEqual(
-      expect.arrayContaining([
-        ['p', 'profile'],
-        ['amount', '100'],
-        ['relays', 'relay1', 'relay2'],
-        ['e', 'event'],
-      ]),
-    )
-  })
-})
+import { getSatoshisAmountFromBolt11, makeZapReceipt, validateZapRequest } from './nip57.ts'
 
 describe('validateZapRequest', () => {
   test('returns an error message for invalid JSON', () => {

nip57.ts

@@ -1,6 +1,6 @@
 import { bech32 } from '@scure/base'
 
-import { validateEvent, verifyEvent, type Event, type EventTemplate } from './pure.ts'
+import { NostrEvent, validateEvent, verifyEvent, type Event, type EventTemplate } from './pure.ts'
 import { utf8Decoder } from './utils.ts'
 import { isReplaceableKind, isAddressableKind } from './kinds.ts'
 
@@ -42,48 +42,44 @@ export async function getZapEndpoint(metadata: Event): Promise<null | string> {
   return null
 }
 
-export function makeZapRequest({
-  profile,
-  event,
-  amount,
-  relays,
-  comment = '',
-}: {
-  profile: string
-  event: string | Event | null
+type ProfileZap = {
+  pubkey: string
   amount: number
-  comment: string
+  comment?: string
   relays: string[]
-}): EventTemplate {
-  if (!amount) throw new Error('amount not given')
-  if (!profile) throw new Error('profile not given')
+}
 
+type EventZap = {
+  event: NostrEvent
+  amount: number
+  comment?: string
+  relays: string[]
+}
+
+export function makeZapRequest(params: ProfileZap | EventZap): EventTemplate {
   let zr: EventTemplate = {
     kind: 9734,
     created_at: Math.round(Date.now() / 1000),
-    content: comment,
+    content: params.comment || '',
     tags: [
-      ['p', profile],
-      ['amount', amount.toString()],
-      ['relays', ...relays],
+      ['p', 'pubkey' in params ? params.pubkey : params.event.pubkey],
+      ['amount', params.amount.toString()],
+      ['relays', ...params.relays],
     ],
   }
 
-  if (event && typeof event === 'string') {
-    zr.tags.push(['e', event])
-  }
-  if (event && typeof event === 'object') {
-    // replacable event
-    if (isReplaceableKind(event.kind)) {
-      const a = ['a', `${event.kind}:${event.pubkey}:`]
+  if ('event' in params) {
+    zr.tags.push(['e', params.event.id])
+    if (isReplaceableKind(params.event.kind)) {
+      const a = ['a', `${params.event.kind}:${params.event.pubkey}:`]
       zr.tags.push(a)
-      // addressable event
-    } else if (isAddressableKind(event.kind)) {
-      let d = event.tags.find(([t, v]) => t === 'd' && v)
+    } else if (isAddressableKind(params.event.kind)) {
+      let d = params.event.tags.find(([t, v]) => t === 'd' && v)
       if (!d) throw new Error('d tag not found or is empty')
-      const a = ['a', `${event.kind}:${event.pubkey}:${d[1]}`]
+      const a = ['a', `${params.event.kind}:${params.event.pubkey}:${d[1]}`]
       zr.tags.push(a)
     }
+    zr.tags.push(['k', params.event.kind.toString()])
   }
 
   return zr

package.json

@@ -1,7 +1,7 @@
 {
   "type": "module",
   "name": "nostr-tools",
-  "version": "2.14.1",
+  "version": "2.17.0",
   "description": "Tools for making a Nostr client.",
   "repository": {
     "type": "git",

pool.test.ts

@@ -35,14 +35,18 @@ test('removing duplicates when subscribing', async () => {
     priv,
   )
 
-  pool.subscribeMany(relayURLs, [{ authors: [pub] }], {
-    onevent(event: Event) {
-      // this should be called only once even though we're listening
-      // to multiple relays because the events will be caught and
-      // deduplicated efficiently (without even being parsed)
-      received.push(event)
+  pool.subscribeMany(
+    relayURLs,
+    { authors: [pub] },
+    {
+      onevent(event: Event) {
+        // this should be called only once even though we're listening
+        // to multiple relays because the events will be caught and
+        // deduplicated efficiently (without even being parsed)
+        received.push(event)
+      },
     },
-  })
+  )
 
   await Promise.any(pool.publish(relayURLs, event))
   await new Promise(resolve => setTimeout(resolve, 200)) // wait for the new published event to be received
@@ -55,12 +59,12 @@ test('same with double subs', async () => {
   let priv = generateSecretKey()
   let pub = getPublicKey(priv)
 
-  pool.subscribeMany(relayURLs, [{ authors: [pub] }], {
+  pool.subscribeMany(relayURLs, { authors: [pub] }, {
     onevent(event) {
       received.push(event)
     },
   })
-  pool.subscribeMany(relayURLs, [{ authors: [pub] }], {
+  pool.subscribeMany(relayURLs, { authors: [pub] }, {
     onevent(event) {
       received.push(event)
     },
@@ -168,7 +172,7 @@ test('query a bunch of events and cancel on eose', async () => {
   let events = new Set<string>()
 
   await new Promise<void>(resolve => {
-    pool.subscribeManyEose(relayURLs, [{ kinds: [0, 1, 2, 3, 4, 5, 6], limit: 40 }], {
+    pool.subscribeManyEose(relayURLs, { kinds: [0, 1, 2, 3, 4, 5, 6], limit: 40 }, {
       onevent(event) {
         events.add(event.id)
       },

pool.ts

@@ -14,8 +14,8 @@ export function useWebSocketImplementation(websocketImplementation: any) {
 }
 
 export class SimplePool extends AbstractSimplePool {
-  constructor() {
-    super({ verifyEvent, websocketImplementation: _WebSocket })
+  constructor(options?: { enablePing?: boolean }) {
+    super({ verifyEvent, websocketImplementation: _WebSocket, ...options })
   }
 }