enableReconnect() always update the filters to the time of the last received event on each subscription.

abstract-pool.ts

@@ -36,7 +36,7 @@ export class AbstractSimplePool {
 
   public verifyEvent: Nostr['verifyEvent']
   public enablePing: boolean | undefined
-  public enableReconnect: boolean | ((filters: Filter[]) => Filter[]) | undefined
+  public enableReconnect: boolean
   public automaticallyAuth?: (relayURL: string) => null | ((event: EventTemplate) => Promise<VerifiedEvent>)
   public trustedRelayURLs: Set<string> = new Set()
 
@@ -46,7 +46,7 @@ export class AbstractSimplePool {
     this.verifyEvent = opts.verifyEvent
     this._WebSocket = opts.websocketImplementation
     this.enablePing = opts.enablePing
-    this.enableReconnect = opts.enableReconnect
+    this.enableReconnect = opts.enableReconnect || false
     this.automaticallyAuth = opts.automaticallyAuth
   }
 

abstract-relay.ts

@@ -16,7 +16,7 @@ export type AbstractRelayConstructorOptions = {
   verifyEvent: Nostr['verifyEvent']
   websocketImplementation?: typeof WebSocket
   enablePing?: boolean
-  enableReconnect?: boolean | ((filters: Filter[]) => Filter[])
+  enableReconnect?: boolean
 }
 
 export class SendingOnClosedConnection extends Error {
@@ -42,7 +42,7 @@ export class AbstractRelay {
   public resubscribeBackoff: number[] = [10000, 10000, 10000, 20000, 20000, 30000, 60000]
   public openSubs: Map<string, Subscription> = new Map()
   public enablePing: boolean | undefined
-  public enableReconnect: boolean | ((filters: Filter[]) => Filter[])
+  public enableReconnect: boolean
   private connectionTimeoutHandle: ReturnType<typeof setTimeout> | undefined
   private reconnectTimeoutHandle: ReturnType<typeof setTimeout> | undefined
   private pingTimeoutHandle: ReturnType<typeof setTimeout> | undefined
@@ -166,8 +166,12 @@ export class AbstractRelay {
         // resubscribe to all open subscriptions
         for (const sub of this.openSubs.values()) {
           sub.eosed = false
-          if (isReconnection && typeof this.enableReconnect === 'function') {
+          if (isReconnection) {
-            sub.filters = this.enableReconnect(sub.filters)
+            for (let f = 0; f < sub.filters.length; f++) {
+              if (sub.lastEmitted) {
+                sub.filters[f].since = sub.lastEmitted + 1
+              }
+            }
           }
           sub.fire()
         }
@@ -299,6 +303,7 @@ export class AbstractRelay {
           if (this.verifyEvent(event) && matchFilters(so.filters, event)) {
             so.onevent(event)
           }
+          if (!so.lastEmitted || so.lastEmitted < event.created_at) so.lastEmitted = event.created_at
           return
         }
         case 'COUNT': {
@@ -469,6 +474,7 @@ export class Subscription {
   public readonly relay: AbstractRelay
   public readonly id: string
 
+  public lastEmitted: number | undefined
   public closed: boolean = false
   public eosed: boolean = false
   public filters: Filter[]

jsr.json

@@ -1,6 +1,6 @@
 {
   "name": "@nostr/tools",
-  "version": "2.19.0",
+  "version": "2.19.1",
   "exports": {
     ".": "./index.ts",
     "./core": "./core.ts",

package.json

@@ -1,7 +1,7 @@
 {
   "type": "module",
   "name": "nostr-tools",
-  "version": "2.19.0",
+  "version": "2.19.1",
   "description": "Tools for making a Nostr client.",
   "repository": {
     "type": "git",

pool.test.ts

@@ -306,12 +306,9 @@ test('reconnect on disconnect in pool', async () => {
 
 test('reconnect with filter update in pool', async () => {
   const mockRelay = mockRelays[0]
-  const newSince = Math.floor(Date.now() / 1000)
   pool = new SimplePool({
     enablePing: true,
-    enableReconnect: filters => {
+    enableReconnect: true,
-      return filters.map(f => ({ ...f, since: newSince }))
-    },
   })
   const relay = await pool.ensureRelay(mockRelay.url)
   relay.pingTimeout = 50
@@ -364,7 +361,7 @@ test('reconnect with filter update in pool', async () => {
   expect(closes).toBe(1)
 
   // check if filter was updated
-  expect(sub.filters[0].since).toBe(newSince)
+  expect(sub.filters[0].since).toBeGreaterThan(1)
 })
 
 test('track relays when publishing', async () => {

relay.test.ts

@@ -336,66 +336,3 @@ test('reconnect on disconnect', async () => {
   expect(relay.connected).toBeTrue()
   expect(closes).toBe(1) // should not have closed again
 })
-
-test('reconnect with filter update', async () => {
-  const mockRelay = new MockRelay()
-  const newSince = Math.floor(Date.now() / 1000)
-  const relay = new Relay(mockRelay.url, {
-    enablePing: true,
-    enableReconnect: filters => {
-      return filters.map(f => ({ ...f, since: newSince }))
-    },
-  })
-  relay.pingTimeout = 50
-  relay.pingFrequency = 50
-  relay.resubscribeBackoff = [50, 100]
-
-  let closes = 0
-  relay.onclose = () => {
-    closes++
-  }
-
-  await relay.connect()
-  expect(relay.connected).toBeTrue()
-
-  const sub = relay.subscribe([{ kinds: [1], since: 0 }], { onevent: () => {} })
-  expect(sub.filters[0].since).toBe(0)
-
-  // wait for the first ping to succeed
-  await new Promise(resolve => setTimeout(resolve, 75))
-  expect(closes).toBe(0)
-
-  // now make it unresponsive
-  mockRelay.unresponsive = true
-
-  // wait for the second ping to fail, which will trigger a close
-  await new Promise(resolve => {
-    const interval = setInterval(() => {
-      if (closes > 0) {
-        clearInterval(interval)
-        resolve(null)
-      }
-    }, 10)
-  })
-  expect(closes).toBe(1)
-  expect(relay.connected).toBeFalse()
-
-  // now make it responsive again
-  mockRelay.unresponsive = false
-
-  // wait for reconnect
-  await new Promise(resolve => {
-    const interval = setInterval(() => {
-      if (relay.connected) {
-        clearInterval(interval)
-        resolve(null)
-      }
-    }, 10)
-  })
-
-  expect(relay.connected).toBeTrue()
-  expect(closes).toBe(1)
-
-  // check if filter was updated
-  expect(sub.filters[0].since).toBe(newSince)
-})