added sse2

src/utils/priceSocket.ts

@@ -2,14 +2,16 @@ import type { Price } from '@/models/home'
 import type { Product } from '@/models/products'
 import { Modal } from 'ant-design-vue'
 import { getConfigApp } from '@/utils/config'
-import { priceSocketConnected, priceWssEnabled } from '@/utils/priceSocketState'
+import { priceSocketConnected, priceStreamLifecycle, priceWssEnabled } from '@/utils/priceSocketState'
 
-export { priceSocketConnected, priceWssEnabled, shouldUsePricePolling } from '@/utils/priceSocketState'
+export { priceSocketConnected, priceStreamLifecycle, priceWssEnabled, shouldUsePricePolling } from '@/utils/priceSocketState'
 
 const RECONNECT_BASE_MS = 3000
 const RECONNECT_MAX_MS = 30000
 const FAILURES_BEFORE_ALERT = 4
-const STALE_STREAM_MS = 45000
+/** بدون event قیمت؛ ping هر ۵ث از سرور activity را تازه می‌کند */
+const STALE_STREAM_MS = 120000
+const FALLBACK_POLL_DELAY_MS = 2500
 
 let eventSource: EventSource | null = null
 let subscribers = 0
@@ -21,6 +23,7 @@ let reconnectAttempt = 0
 let lastStreamEventAt = 0
 let networkAlertOpen = false
 let listenersBound = false
+let fallbackPollTimer: ReturnType<typeof setTimeout> | undefined
 
 function isTruthySetting(value: unknown, defaultValue = true): boolean {
   if (value === null || value === undefined || value === '') {
@@ -95,6 +98,23 @@ function startStaleCheck() {
   }, 15000)
 }
 
+function clearFallbackPollTimer() {
+  if (fallbackPollTimer) {
+    clearTimeout(fallbackPollTimer)
+    fallbackPollTimer = undefined
+  }
+}
+
+function scheduleFallbackPoll() {
+  clearFallbackPollTimer()
+  fallbackPollTimer = setTimeout(() => {
+    fallbackPollTimer = undefined
+    if (!stopped && subscribers > 0 && !priceSocketConnected.value) {
+      void runFallbackPoll()
+    }
+  }, FALLBACK_POLL_DELAY_MS)
+}
+
 async function runFallbackPoll() {
   if (!priceWssEnabled.value || priceSocketConnected.value) {
     return
@@ -211,6 +231,10 @@ function bindStreamEvents(source: EventSource) {
     }
   })
 
+  source.addEventListener('ping', () => {
+    touchStreamActivity()
+  })
+
   source.onmessage = () => {
     touchStreamActivity()
   }
@@ -220,9 +244,10 @@ function handleStreamLost(scheduleRetry = true) {
   const wasConnected = priceSocketConnected.value
   disconnectSourceOnly()
   priceSocketConnected.value = false
+  priceStreamLifecycle.value = scheduleRetry ? 'connecting' : 'closed'
 
-  if (wasConnected || scheduleRetry) {
-    void runFallbackPoll()
+  if ((wasConnected || scheduleRetry) && scheduleRetry) {
+    scheduleFallbackPoll()
   }
 
   if (scheduleRetry && !stopped && subscribers > 0) {
@@ -233,6 +258,7 @@ function handleStreamLost(scheduleRetry = true) {
 
 function disconnectSourceOnly() {
   stopStaleCheck()
+  clearFallbackPollTimer()
   if (eventSource) {
     eventSource.onopen = null
     eventSource.onerror = null
@@ -250,6 +276,7 @@ function connect() {
   const url = resolveStreamUrl()
   if (!url) {
     priceSocketConnected.value = false
+    priceStreamLifecycle.value = 'closed'
     return
   }
 
@@ -261,6 +288,8 @@ function connect() {
     disconnectSourceOnly()
   }
 
+  priceStreamLifecycle.value = 'connecting'
+
   try {
     eventSource = new EventSource(url)
   } catch (error) {
@@ -274,7 +303,9 @@ function connect() {
   eventSource.onopen = () => {
     reconnectAttempt = 0
     clearReconnectTimer()
+    clearFallbackPollTimer()
     networkAlertOpen = false
+    priceStreamLifecycle.value = 'open'
     priceSocketConnected.value = true
     touchStreamActivity()
     startStaleCheck()
@@ -282,13 +313,7 @@ function connect() {
 
   eventSource.onerror = () => {
     const state = eventSource?.readyState
-    if (state === EventSource.OPEN) {
-      return
-    }
-
-    if (state === EventSource.CONNECTING) {
-      priceSocketConnected.value = false
-      void runFallbackPoll()
+    if (state === EventSource.OPEN || state === EventSource.CONNECTING) {
       return
     }
 
@@ -298,8 +323,10 @@ function connect() {
 
 function disconnect() {
   clearReconnectTimer()
+  clearFallbackPollTimer()
   disconnectSourceOnly()
   priceSocketConnected.value = false
+  priceStreamLifecycle.value = 'idle'
 }
 
 export function forceReconnect() {