fix(traffic): проверять live-срез и прекращать опрос выключенных устройств

backend/src/services/traffic-rate.ts

@@ -42,6 +42,7 @@ export interface MonitorLiveSample {
   rxMbps: number
   txMbps: number
   at: string
+  timestampKind: "backend-receipt"
 }
 
 export function isLoopbackName(name: string): boolean {
@@ -61,7 +62,7 @@ export function shouldIncludeIface(
 
 export function bpsToMbps(bps: number): number {
   if (!Number.isFinite(bps) || bps <= 0) return 0
-  return Math.round((bps / 1_000_000) * 1000) / 1000
+  return bps / 1_000_000
 }
 
 /** bits/s из соседних счётчиков. null = нельзя (Δt≤0 или сброс). */
@@ -75,7 +76,7 @@ export function rateBpsFromDelta(
   const dtSec = (nextAtMs - prevAtMs) / 1000
   if (!(dtSec > 0) || !Number.isFinite(dtSec)) return null
   if (nextBytes < prevBytes) return null
-  const rate=Math.round(((nextBytes - prevBytes) * 8) / dtSec)
+  const rate=((nextBytes - prevBytes) * 8) / dtSec
   return Number.isFinite(rate)?rate:null
 }
 
@@ -274,26 +275,41 @@ export function mergeBuiltTraffic(parts: BuiltTrafficSeries[]): BuiltTrafficSeri
 
 export function parseMonitorTraffic(
   raw: unknown,
-  opts?: { onlyInterface?: string },
+  opts?: { onlyInterface?: string; expectedInterfaces?: readonly string[] },
 ): MonitorLiveSample {
   const items = Array.isArray(raw) ? raw : raw != null ? [raw] : []
   let rxBps = 0
   let txBps = 0
+  const seen = new Set<string>()
+  const expected = opts?.expectedInterfaces ? new Set(opts.expectedInterfaces) : null
+  const rate = (raw: unknown) => {
+    if (typeof raw !== "number" && (typeof raw !== "string" || !/^(?:\d+(?:\.\d+)?|\.\d+)$/.test(raw.trim()))) throw new Error("Некорректная скорость monitor-traffic")
+    const n = Number(raw)
+    if (!Number.isFinite(n) || n < 0 || n > Number.MAX_SAFE_INTEGER) throw new Error("Некорректная скорость monitor-traffic")
+    return n
+  }
   for (const item of items) {
-    if (!item || typeof item !== "object") continue
+    if (!item || typeof item !== "object" || Array.isArray(item)) throw new Error("Некорректный ответ monitor-traffic")
     const rec = item as Record<string, unknown>
-    const name = String(rec.name ?? rec.interface ?? "")
+    const name = rec.name ?? rec.interface
+    if (typeof name !== "string" || !name.trim()) throw new Error("Не указан интерфейс monitor-traffic")
     if (opts?.onlyInterface) {
-      if (name && name !== opts.onlyInterface) continue
+      if (name !== opts.onlyInterface) throw new Error("Ответ monitor-traffic относится к другому интерфейсу")
     } else if (isLoopbackName(name)) {
       continue
     }
-    rxBps += Number.parseFloat(String(rec["rx-bits-per-second"] ?? 0)) || 0
-    txBps += Number.parseFloat(String(rec["tx-bits-per-second"] ?? 0)) || 0
+    if (seen.has(name) || expected && !expected.has(name)) throw new Error("Некорректный набор интерфейсов monitor-traffic")
+    seen.add(name)
+    rxBps += rate(rec["rx-bits-per-second"])
+    txBps += rate(rec["tx-bits-per-second"])
   }
+  if (!seen.size || expected && (expected.size !== opts!.expectedInterfaces!.length ||
+    [...expected].some(name => !seen.has(name)))) throw new Error("Не получены все live-измерения интерфейсов")
+  if (![rxBps, txBps].every(n => Number.isFinite(n) && n <= Number.MAX_SAFE_INTEGER)) throw new Error("Суммарная live-скорость вне допустимого диапазона")
   return {
-    rxMbps: bpsToMbps(rxBps),
-    txMbps: bpsToMbps(txBps),
+    rxMbps: rxBps / 1_000_000,
+    txMbps: txBps / 1_000_000,
     at: new Date().toISOString(),
+    timestampKind: "backend-receipt",
   }
 }