feat(traffic): показать аналитику IPFIX по серверам и интерфейсам

Резолвить ifIndex в имена RouterOS, дать вкладке Потоки ту же оболочку сервер/клиент/iface, что у обычного трафика, и обновлять срезы live без перезагрузки.

Co-authored-by: Cursor <[email protected]>

backend/src/services/traffic-flow-parse.test.ts

@@ -24,6 +24,7 @@ assert.equal(flows[0]?.src, "10.1.1.8")
 assert.equal(flows[0]?.dst, "8.8.8.8")
 assert.equal(flows[0]?.proto, 6)
 assert.equal(flows[0]?.bytes, 1500)
+assert.equal(flows[0]?.inIface, "1")
 assert.equal(protoName(6), "TCP")
 assert.equal(parseFlowPacket(Buffer.from([0, 1]), "1.1.1.1").length, 0)
 
@@ -66,4 +67,37 @@ resetFlowTemplatesForTests()
   assert.equal(fromData[0]?.dst, "8.8.8.8")
 }
 
+resetFlowTemplatesForTests()
+{
+  const tpl = Buffer.alloc(16 + 24)
+  tpl.writeUInt16BE(10, 0)
+  tpl.writeUInt16BE(tpl.length, 2)
+  tpl.writeUInt16BE(2, 16)
+  tpl.writeUInt16BE(24, 18)
+  tpl.writeUInt16BE(256, 20)
+  tpl.writeUInt16BE(4, 22)
+  tpl.writeUInt16BE(8, 24)
+  tpl.writeUInt16BE(4, 26)
+  tpl.writeUInt16BE(12, 28)
+  tpl.writeUInt16BE(4, 30)
+  tpl.writeUInt16BE(10, 32)
+  tpl.writeUInt16BE(4, 34)
+  tpl.writeUInt16BE(82, 36)
+  tpl.writeUInt16BE(6, 38)
+  const data = Buffer.alloc(16 + 22)
+  data.writeUInt16BE(10, 0)
+  data.writeUInt16BE(data.length, 2)
+  data.writeUInt16BE(256, 16)
+  data.writeUInt16BE(22, 18)
+  data[20] = 10; data[21] = 1; data[22] = 1; data[23] = 8
+  data[24] = 8; data[25] = 8; data[26] = 8; data[27] = 8
+  data.writeUInt32BE(13, 28)
+  data.write("ether1", 32)
+  parseFlowPacket(tpl, "10.255.254.3")
+  const named = parseFlowPacket(data, "10.255.254.3")
+  assert.equal(named.length, 1)
+  assert.equal(named[0]?.inIface, "13")
+  assert.equal(named[0]?.src, "10.1.1.8")
+}
+
 console.log("traffic-flow-parse.test.ts: ok")