完善直播节点监控与边缘代理

backend/main.py

@@ -6,17 +6,63 @@ from fastapi.responses import FileResponse
 from starlette.responses import RedirectResponse
 from starlette.background import BackgroundTask
 import httpx
+import asyncio
+import time
+import psutil
 from database import init_db
 from services.transcoder import transcode_mgr
 from routes import streams_router, nodes_router, auth_router
 from routes.settings_route import router as settings_router
 from config import settings
+from services.load_balancer import lb
+from services.node_store import load_nodes
+
+
+async def monitor_origin():
+    previous = psutil.net_io_counters()
+    previous_time = time.monotonic()
+    while True:
+        await asyncio.sleep(10)
+        current = psutil.net_io_counters()
+        current_time = time.monotonic()
+        elapsed = current_time - previous_time
+        network_in = ((current.bytes_recv - previous.bytes_recv) * 8 / elapsed / 1e6) if elapsed > 0 else None
+        network_out = ((current.bytes_sent - previous.bytes_sent) * 8 / elapsed / 1e6) if elapsed > 0 else None
+        media_available = False
+        viewer_count = None
+        try:
+            async with httpx.AsyncClient(timeout=3) as client:
+                response = await client.get(f"http://127.0.0.1:{settings.media_origin_api_port}/v3/paths/list")
+                response.raise_for_status()
+                payload = response.json()
+                viewer_count = sum(item.get("readers", 0) for item in payload.get("items", []))
+                media_available = True
+        except Exception:
+            pass
+        lb.report_health("default", {
+            "cpu_percent": psutil.cpu_percent(),
+            "memory_percent": psutil.virtual_memory().percent,
+            "bandwidth_mbps": network_in + network_out if network_in is not None and network_out is not None else None,
+            "network_in_mbps": network_in,
+            "network_out_mbps": network_out,
+            "active_connections": len(psutil.net_connections(kind="tcp")),
+            "hls_readers": viewer_count,
+            "viewer_count": viewer_count,
+            "frame_drop_indicators": None,
+            "packet_loss_indicators": None,
+            "media_metrics_available": False,
+        })
+        previous = current
+        previous_time = current_time
 
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
+    load_nodes()
     await init_db()
+    origin_monitor = asyncio.create_task(monitor_origin())
     yield
+    origin_monitor.cancel()
     transcode_mgr.stop_all()
 
 

backend/requirements.txt

@@ -6,3 +6,4 @@ pydantic>=2.7.0
 pydantic-settings>=2.2.0
 python-multipart>=0.0.9
 httpx>=0.27.0
+psutil>=5.9.0

backend/routes/nodes.py

@@ -5,14 +5,16 @@ from config import settings
 from routes.auth import require_auth
 from services.load_balancer import lb
 from services.multicast_detector import multicast_detector
+from services.node_store import save_nodes
 
 router = APIRouter(prefix="/api/nodes", tags=["nodes"])
 
 
 class NodeUpdate(BaseModel):
-    weight: int
+    weight: int | None = None
     enabled: bool | None = None
     subnet: str | None = None
+    name: str | None = None
 
 
 class StrategyUpdate(BaseModel):
@@ -27,6 +29,12 @@ class NodeHeartbeat(BaseModel):
     bandwidth_mbps: float | None = None
     active_connections: int | None = None
     hls_readers: int | None = None
+    network_in_mbps: float | None = None
+    network_out_mbps: float | None = None
+    viewer_count: int | None = None
+    frame_drop_indicators: int | None = None
+    packet_loss_indicators: int | None = None
+    media_metrics_available: bool = False
 
 
 class NodeRegister(BaseModel):
@@ -83,15 +91,22 @@ async def update_node(node_id: str, body: NodeUpdate, _: bool = Depends(require_
     found = False
     for n in settings.edge_nodes:
         if n["id"] == node_id:
-            n["weight"] = body.weight
+            if body.weight is not None:
+                n["weight"] = body.weight
             if body.enabled is not None:
                 n["enabled"] = body.enabled
             if body.subnet is not None:
                 n["subnet"] = body.subnet
+            if body.name is not None:
+                name = body.name.strip()
+                if not name:
+                    raise HTTPException(status_code=422, detail="Node name cannot be empty")
+                n["name"] = name
             found = True
             break
     if not found:
         raise HTTPException(status_code=404, detail="Node not found")
+    save_nodes()
     return {"ok": True}
 
 
@@ -100,13 +115,13 @@ async def register_node(body: NodeRegister):
     for n in settings.edge_nodes:
         if n["id"] == body.node_id:
             n.update({
-                "name": body.name,
                 "host": body.host,
                 "hls_port": body.hls_port,
                 "api_port": body.api_port,
                 "weight": body.weight,
                 "subnet": body.subnet,
             })
+            save_nodes()
             return {"ok": True, "action": "updated"}
     settings.edge_nodes.append({
         "id": body.node_id,
@@ -119,6 +134,7 @@ async def register_node(body: NodeRegister):
         "subnet": body.subnet,
         "is_origin": False,
     })
+    save_nodes()
     return {"ok": True, "action": "registered"}
 
 
@@ -130,6 +146,12 @@ async def node_heartbeat(body: NodeHeartbeat):
         "bandwidth_mbps": body.bandwidth_mbps,
         "active_connections": body.active_connections,
         "hls_readers": body.hls_readers,
+        "network_in_mbps": body.network_in_mbps,
+        "network_out_mbps": body.network_out_mbps,
+        "viewer_count": body.viewer_count,
+        "frame_drop_indicators": body.frame_drop_indicators,
+        "packet_loss_indicators": body.packet_loss_indicators,
+        "media_metrics_available": body.media_metrics_available,
     })
     return {"ok": True}
 

backend/routes/streams.py

@@ -62,14 +62,23 @@ async def list_streams(db: AsyncSession = Depends(get_db)):
 
 @router.post("")
 async def create_stream(body: StreamCreate, db: AsyncSession = Depends(get_db),
-                        _: bool = Depends(require_auth)):
+                         _: bool = Depends(require_auth)):
+    title = body.title.strip()
+    if not title:
+        raise HTTPException(status_code=422, detail="直播标题不能为空")
     svc = StreamService(db)
-    stream = await svc.create_stream(
-        title=body.title,
-        description=body.description,
-        cover_url=body.cover_url,
-        scheduled_at=body.scheduled_at,
-    )
+    try:
+        stream = await svc.create_stream(
+            title=title,
+            description=body.description,
+            cover_url=body.cover_url,
+            scheduled_at=body.scheduled_at,
+        )
+    except ValueError as exc:
+        raise HTTPException(status_code=422, detail=str(exc)) from exc
+    except Exception as exc:
+        await db.rollback()
+        raise HTTPException(status_code=500, detail="创建直播失败，请检查日期格式和数据库状态") from exc
     rtmp_url = media_service.get_rtmp_url(stream.stream_key)
     return {
         "id": stream.id,
@@ -179,6 +188,7 @@ async def get_stream_by_key(stream_key: str, request: Request, db: AsyncSession
         "title": s.title,
         "status": s.status.value,
         "multicast_available": urls["multicast_available"],
+        "selected_node": urls.get("selected_node"),
         "lines": urls["lines"],
         "qualities": urls["qualities"],
     }

backend/services/load_balancer.py

@@ -132,6 +132,12 @@ class LoadBalancer:
                     "bandwidth_mbps": h.get("bandwidth_mbps"),
                     "active_connections": h.get("active_connections"),
                     "hls_readers": h.get("hls_readers"),
+                    "network_in_mbps": h.get("network_in_mbps"),
+                    "network_out_mbps": h.get("network_out_mbps"),
+                    "viewer_count": h.get("viewer_count"),
+                    "frame_drop_indicators": h.get("frame_drop_indicators"),
+                    "packet_loss_indicators": h.get("packet_loss_indicators"),
+                    "media_metrics_available": h.get("media_metrics_available", False),
                 } if h else None,
             }
         return result

backend/services/node_store.py

@@ -0,0 +1,27 @@
+import json
+from pathlib import Path
+
+from config import settings
+
+
+STORE_PATH = Path(__file__).resolve().parent.parent / "nodes.json"
+
+
+def load_nodes() -> None:
+    if not STORE_PATH.exists():
+        return
+    try:
+        nodes = json.loads(STORE_PATH.read_text(encoding="utf-8"))
+    except (OSError, json.JSONDecodeError):
+        return
+    if isinstance(nodes, list):
+        settings.edge_nodes = nodes
+
+
+def save_nodes() -> None:
+    temporary = STORE_PATH.with_suffix(".json.tmp")
+    temporary.write_text(
+        json.dumps(settings.edge_nodes, ensure_ascii=False, indent=2),
+        encoding="utf-8",
+    )
+    temporary.replace(STORE_PATH)

backend/services/stream_service.py

@@ -7,6 +7,7 @@ from services.multicast_detector import multicast_detector
 from services.transcoder import transcode_mgr
 from config import settings
 import json
+from datetime import datetime
 
 
 class StreamService:
@@ -17,13 +18,19 @@ class StreamService:
                             cover_url: str | None = None,
                             scheduled_at: str | None = None) -> Stream:
         import uuid
+        scheduled_datetime = None
+        if scheduled_at:
+            try:
+                scheduled_datetime = datetime.fromisoformat(scheduled_at.replace("Z", "+00:00"))
+            except ValueError as exc:
+                raise ValueError("预定开播时间格式无效") from exc
         stream = Stream(
             title=title,
             description=description,
             cover_url=cover_url,
             stream_key=uuid.uuid4().hex,
             status=StreamStatus.pending,
-            scheduled_at=scheduled_at,
+            scheduled_at=scheduled_datetime,
         )
         self.db.add(stream)
         await self.db.commit()
@@ -113,4 +120,8 @@ class StreamService:
             "lines": lines,
             "qualities": [{"label": q["label"], "width": q["width"], "height": q["height"]} for q in settings.qualities],
             "multicast_available": multicast_detector.is_available(),
+            "selected_node": {
+                "id": best_node["id"],
+                "name": best_node["name"],
+            } if best_node else None,
         }

edge-agent/agent/agent.go

@@ -5,17 +5,19 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"sync"
 	"time"
 )
 
 type Config struct {
-	NodeName  string
-	OriginURL string
-	HlsPort   int
-	ApiPort   int
-	Subnet    string
-	DataDir   string
-	Weight    int
+	NodeName     string
+	OriginURL    string
+	DiscoveryURL string
+	HlsPort      int
+	ApiPort      int
+	Subnet       string
+	DataDir      string
+	Weight       int
 }
 
 type Agent struct {
@@ -26,6 +28,8 @@ type Agent struct {
 	monitor    *Monitor
 	nodeID     string
 	stopCh     chan struct{}
+	connected  bool
+	mu         sync.RWMutex
 }
 
 func New(cfg Config, mtxFS embed.FS) (*Agent, error) {
@@ -42,6 +46,13 @@ func (a *Agent) Start() error {
 		return fmt.Errorf("create data dir: %w", err)
 	}
 
+	a.hb = NewHeartbeat(a.cfg, a.nodeID)
+	if err := a.hb.Discover(); err != nil {
+		log.Printf("Warning: initial discovery failed: %v (will retry every 10 seconds)", err)
+	} else {
+		a.cfg.OriginURL = a.hb.OriginURL()
+	}
+
 	a.mtx = NewMediaMTXManager(a.cfg, a.mediamtxFS)
 	if err := a.mtx.Extract(); err != nil {
 		return fmt.Errorf("extract mediamtx: %w", err)
@@ -56,12 +67,10 @@ func (a *Agent) Start() error {
 	}
 
 	a.monitor = NewMonitor()
-	a.hb = NewHeartbeat(a.cfg, a.nodeID)
-
 	time.Sleep(2 * time.Second)
 
-	if err := a.hb.Register(); err != nil {
-		log.Printf("Warning: registration failed: %v (will retry)", err)
+	if err := a.connect(); err != nil {
+		log.Printf("Warning: connection failed: %v (will retry every 10 seconds)", err)
 	}
 
 	go a.heartbeatLoop()
@@ -87,8 +96,15 @@ func (a *Agent) heartbeatLoop() {
 		case <-a.stopCh:
 			return
 		case <-ticker.C:
+			if !a.Connected() {
+				if err := a.connect(); err != nil {
+					log.Printf("Connection retry failed: %v", err)
+					continue
+				}
+			}
 			metrics := a.monitor.Snapshot()
 			if err := a.hb.Send(metrics); err != nil {
+				a.setConnected(false)
 				log.Printf("Heartbeat error: %v", err)
 			}
 		}
@@ -104,12 +120,37 @@ func (a *Agent) monitorLoop() {
 			return
 		case <-ticker.C:
 			a.monitor.Tick()
+			if a.mtx != nil {
+				a.monitor.SetMediaMetrics(a.mtx.Metrics())
+			}
 		}
 	}
 }
 
-func (a *Agent) NodeID() string  { return a.nodeID }
-func (a *Agent) Config() Config  { return a.cfg }
+func (a *Agent) NodeID() string { return a.nodeID }
+func (a *Agent) Config() Config { return a.cfg }
+func (a *Agent) Connected() bool {
+	a.mu.RLock()
+	defer a.mu.RUnlock()
+	return a.connected
+}
+
+func (a *Agent) setConnected(connected bool) {
+	a.mu.Lock()
+	a.connected = connected
+	a.mu.Unlock()
+}
+
+func (a *Agent) connect() error {
+	if err := a.hb.Discover(); err != nil {
+		return err
+	}
+	if err := a.hb.Register(); err != nil {
+		return err
+	}
+	a.setConnected(true)
+	return nil
+}
 func (a *Agent) Metrics() Metrics {
 	if a.monitor != nil {
 		return a.monitor.Snapshot()

edge-agent/agent/heartbeat.go

@@ -4,7 +4,9 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"io"
 	"net/http"
+	"strings"
 	"time"
 )
 
@@ -21,6 +23,12 @@ type HeartbeatPayload struct {
 	BandwidthMbps     float64 `json:"bandwidth_mbps"`
 	ActiveConnections int     `json:"active_connections"`
 	HlsReaders        int     `json:"hls_readers"`
+	NetworkInMbps     float64 `json:"network_in_mbps"`
+	NetworkOutMbps    float64 `json:"network_out_mbps"`
+	ViewerCount       int     `json:"viewer_count"`
+	FrameDrops        int     `json:"frame_drop_indicators"`
+	PacketLoss        int     `json:"packet_loss_indicators"`
+	MediaAvailable    bool    `json:"media_metrics_available"`
 }
 
 type RegisterPayload struct {
@@ -54,6 +62,37 @@ func (h *Heartbeat) Register() error {
 	return h.post("/api/nodes/register", payload)
 }
 
+func (h *Heartbeat) Discover() error {
+	if h.cfg.DiscoveryURL == "" {
+		return nil
+	}
+	resp, err := h.client.Get(h.cfg.DiscoveryURL)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return fmt.Errorf("discovery status %d", resp.StatusCode)
+	}
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 4096))
+	if err != nil {
+		return err
+	}
+	host := strings.TrimSpace(string(body))
+	if host == "" {
+		return fmt.Errorf("discovery returned an empty address")
+	}
+	if !strings.HasPrefix(host, "http://") && !strings.HasPrefix(host, "https://") {
+		host = "http://" + host
+	}
+	h.cfg.OriginURL = strings.TrimRight(host, "/")
+	return nil
+}
+
+func (h *Heartbeat) OriginURL() string {
+	return h.cfg.OriginURL
+}
+
 func (h *Heartbeat) Send(m Metrics) error {
 	payload := HeartbeatPayload{
 		NodeID:            h.nodeID,
@@ -62,6 +101,12 @@ func (h *Heartbeat) Send(m Metrics) error {
 		BandwidthMbps:     m.Bandwidth,
 		ActiveConnections: m.ActiveConns,
 		HlsReaders:        m.HlsReaders,
+		NetworkInMbps:     m.NetworkIn,
+		NetworkOutMbps:    m.NetworkOut,
+		ViewerCount:       m.ViewerCount,
+		FrameDrops:        m.FrameDrops,
+		PacketLoss:        m.PacketLoss,
+		MediaAvailable:    m.MediaAvailable,
 	}
 	return h.post("/api/nodes/heartbeat", payload)
 }

edge-agent/agent/mediamtx.go

@@ -1,6 +1,7 @@
 package agent
 
 import (
+	"bufio"
 	"embed"
 	"fmt"
 	"io"
@@ -9,6 +10,7 @@ import (
 	"path/filepath"
 	"runtime"
 	"strings"
+	"sync"
 )
 
 type MediaMTXManager struct {
@@ -17,6 +19,15 @@ type MediaMTXManager struct {
 	binPath    string
 	configPath string
 	cmd        *exec.Cmd
+	mu         sync.RWMutex
+	metrics    MediaMetrics
+}
+
+type MediaMetrics struct {
+	ViewerCount int
+	FrameDrops  int
+	PacketLoss  int
+	Available   bool
 }
 
 func NewMediaMTXManager(cfg Config, fs embed.FS) *MediaMTXManager {
@@ -116,14 +127,57 @@ paths:
 
 func (m *MediaMTXManager) Start() error {
 	m.cmd = exec.Command(m.binPath, m.configPath)
-	m.cmd.Stdout = os.Stdout
-	m.cmd.Stderr = os.Stderr
+	stdout, err := m.cmd.StdoutPipe()
+	if err != nil {
+		return fmt.Errorf("capture mediamtx stdout: %w", err)
+	}
+	stderr, err := m.cmd.StderrPipe()
+	if err != nil {
+		return fmt.Errorf("capture mediamtx stderr: %w", err)
+	}
 	if err := m.cmd.Start(); err != nil {
 		return fmt.Errorf("start mediamtx: %w", err)
 	}
+	go m.parseLogs(stdout)
+	go m.parseLogs(stderr)
 	return nil
 }
 
+func (m *MediaMTXManager) parseLogs(reader io.Reader) {
+	scanner := bufio.NewScanner(reader)
+	for scanner.Scan() {
+		line := scanner.Text()
+		fmt.Fprintln(os.Stdout, line)
+		lower := strings.ToLower(line)
+		m.mu.Lock()
+		if strings.Contains(lower, "reader opened") || strings.Contains(lower, "hls client connected") {
+			m.metrics.Available = true
+			m.metrics.ViewerCount++
+		}
+		if strings.Contains(lower, "reader closed") || strings.Contains(lower, "hls client disconnected") {
+			m.metrics.Available = true
+			if m.metrics.ViewerCount > 0 {
+				m.metrics.ViewerCount--
+			}
+		}
+		if strings.Contains(lower, "frame drop") || strings.Contains(lower, "dropped frame") {
+			m.metrics.Available = true
+			m.metrics.FrameDrops++
+		}
+		if strings.Contains(lower, "packet loss") || strings.Contains(lower, "lost packet") {
+			m.metrics.Available = true
+			m.metrics.PacketLoss++
+		}
+		m.mu.Unlock()
+	}
+}
+
+func (m *MediaMTXManager) Metrics() MediaMetrics {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	return m.metrics
+}
+
 func (m *MediaMTXManager) Stop() {
 	if m.cmd != nil && m.cmd.Process != nil {
 		m.cmd.Process.Kill()

edge-agent/agent/monitor.go

@@ -11,11 +11,17 @@ import (
 )
 
 type Metrics struct {
-	CPU        float64
-	Memory     float64
-	Bandwidth  float64
-	ActiveConns int
-	HlsReaders int
+	CPU            float64
+	Memory         float64
+	Bandwidth      float64
+	NetworkIn      float64
+	NetworkOut     float64
+	ActiveConns    int
+	HlsReaders     int
+	ViewerCount    int
+	FrameDrops     int
+	PacketLoss     int
+	MediaAvailable bool
 }
 
 type Monitor struct {
@@ -54,8 +60,9 @@ func (m *Monitor) Tick() {
 		} else {
 			elapsed := now.Sub(m.prevNetTime).Seconds()
 			if elapsed > 0 {
-				bytesTotal := (curIn - m.prevNetIn) + (curOut - m.prevNetOut)
-				metrics.Bandwidth = float64(bytesTotal) * 8 / elapsed / 1e6
+				metrics.NetworkIn = float64(curIn-m.prevNetIn) * 8 / elapsed / 1e6
+				metrics.NetworkOut = float64(curOut-m.prevNetOut) * 8 / elapsed / 1e6
+				metrics.Bandwidth = metrics.NetworkIn + metrics.NetworkOut
 			}
 			m.prevNetIn = curIn
 			m.prevNetOut = curOut
@@ -81,3 +88,13 @@ func (m *Monitor) Snapshot() Metrics {
 	defer m.mu.RUnlock()
 	return m.current
 }
+
+func (m *Monitor) SetMediaMetrics(media MediaMetrics) {
+	m.mu.Lock()
+	m.current.ViewerCount = media.ViewerCount
+	m.current.HlsReaders = media.ViewerCount
+	m.current.FrameDrops = media.FrameDrops
+	m.current.PacketLoss = media.PacketLoss
+	m.current.MediaAvailable = media.Available
+	m.mu.Unlock()
+}

edge-agent/install-autostart.ps1

@@ -0,0 +1,14 @@
+param(
+    [string]$Executable = "$PSScriptRoot\dist\streamcore-edge-windows-amd64.exe"
+)
+
+$resolved = (Resolve-Path $Executable).Path
+$taskName = "StreamCore Edge Agent"
+$action = New-ScheduledTaskAction -Execute $resolved
+$trigger = New-ScheduledTaskTrigger -AtStartup
+$settings = New-ScheduledTaskSettingsSet -RestartCount 999 -RestartInterval (New-TimeSpan -Seconds 10)
+$principal = New-ScheduledTaskPrincipal -UserId "SYSTEM" -LogonType ServiceAccount -RunLevel Highest
+
+Register-ScheduledTask -TaskName $taskName -Action $action -Trigger $trigger -Settings $settings -Principal $principal -Force | Out-Null
+Start-ScheduledTask -TaskName $taskName
+Write-Host "Installed and started scheduled task: $taskName"

edge-agent/install-autostart.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+set -eu
+
+BIN="$(readlink -f "${1:-./dist/streamcore-edge-linux-amd64}")"
+SERVICE="/etc/systemd/system/streamcore-edge.service"
+
+if [ ! -x "$BIN" ]; then
+    echo "Edge agent executable not found: $BIN" >&2
+    exit 1
+fi
+
+cat > "$SERVICE" <<EOF
+[Unit]
+Description=StreamCore Edge Agent
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=$BIN
+Restart=always
+RestartSec=10
+EnvironmentFile=-/etc/default/streamcore-edge
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+systemctl daemon-reload
+systemctl enable --now streamcore-edge.service
+echo "Installed and started streamcore-edge.service"

edge-agent/main.go

@@ -15,7 +15,7 @@ import (
 var mediamtxFS embed.FS
 
 const (
-	defaultOriginURL = "http://127.0.0.1:8080"
+	defaultOriginURL  = "http://127.0.0.1:8080"
 	heartbeatInterval = 10 * time.Second
 )
 
@@ -23,13 +23,14 @@ func main() {
 	log.SetFlags(log.LstdFlags | log.Lshortfile)
 
 	cfg := agent.Config{
-		NodeName:    "edge-node",
-		OriginURL:   getEnv("STREAMCORE_ORIGIN", defaultOriginURL),
-		HlsPort:     8889,
-		ApiPort:     9998,
-		Subnet:      getEnv("STREAMCORE_SUBNET", "0.0.0.0/0"),
-		DataDir:     getEnv("STREAMCORE_DATA_DIR", ""),
-		Weight:      100,
+		NodeName:     "edge-node",
+		OriginURL:    getEnv("STREAMCORE_ORIGIN", defaultOriginURL),
+		DiscoveryURL: getEnv("STREAMCORE_DISCOVERY_URL", ""),
+		HlsPort:      8889,
+		ApiPort:      9998,
+		Subnet:       getEnv("STREAMCORE_SUBNET", "0.0.0.0/0"),
+		DataDir:      getEnv("STREAMCORE_DATA_DIR", ""),
+		Weight:       100,
 	}
 
 	if cfg.DataDir == "" {

edge-agent/tray_windows.go

@@ -26,6 +26,8 @@ func onReady(ag *agent.Agent) {
 
 	mStatus := systray.AddMenuItem("Node: "+ag.NodeID(), "Node")
 	mStatus.Disable()
+	mConnection := systray.AddMenuItem("Connection: connecting", "Master connection")
+	mConnection.Disable()
 
 	systray.AddSeparator()
 
@@ -46,6 +48,11 @@ func onReady(ag *agent.Agent) {
 		for {
 			select {
 			case <-ticker.C:
+				if ag.Connected() {
+					mConnection.SetTitle("Connection: connected")
+				} else {
+					mConnection.SetTitle("Connection: disconnected")
+				}
 				m := ag.Metrics()
 				mCPU.SetTitle(fmt.Sprintf("CPU: %.1f%%", m.CPU))
 				mMem.SetTitle(fmt.Sprintf("MEM: %.1f%%", m.Memory))

frontend/src/admin/pages/NodeManager.tsx

@@ -1,11 +1,11 @@
 import { useState, useEffect } from 'react'
-import { Table, InputNumber, Switch, Typography, message, Tag, Statistic, Row, Col, Button, Progress } from 'antd'
+import { Table, Input, InputNumber, Switch, Typography, message, Tag, Statistic, Row, Col, Button, Progress } from 'antd'
 import { CheckCircleOutlined, CloseCircleOutlined, ReloadOutlined, WarningOutlined } from '@ant-design/icons'
 import api from '../../api/client'
 
 const { Title, Text } = Typography
 
-interface NodeMetrics { cpu_percent: number | null; memory_percent: number | null; bandwidth_mbps: number | null; active_connections: number | null; hls_readers: number | null }
+interface NodeMetrics { cpu_percent: number | null; memory_percent: number | null; bandwidth_mbps: number | null; active_connections: number | null; hls_readers: number | null; network_in_mbps: number | null; network_out_mbps: number | null; viewer_count: number | null; frame_drop_indicators: number | null; packet_loss_indicators: number | null; media_metrics_available: boolean }
 interface NodeInfo { id: string; name: string; host: string; hls_port: number; api_port: number; weight: number; enabled: boolean; subnet: string; is_origin: boolean; online: boolean; metrics: NodeMetrics | null }
 interface StrategyInfo { strategy: string; multicast_enabled: boolean; multicast_available: boolean }
 
@@ -31,6 +31,12 @@ export default function NodeManager() {
     const node = nodes.find(n => n.id === nid); if (!node) return
     try { await api.put(`/nodes/${nid}`, { weight: node.weight, enabled: en }); setNodes(p => p.map(n => n.id === nid ? { ...n, enabled: en } : n)) } catch { message.error('更新失败') }
   }
+  async function updateName(nid: string, name: string) {
+    const trimmed = name.trim()
+    if (!trimmed) { message.error('节点名称不能为空'); loadData(); return }
+    try { await api.put(`/nodes/${nid}`, { name: trimmed }); setNodes(p => p.map(n => n.id === nid ? { ...n, name: trimmed } : n)); message.success('名称已更新') }
+    catch { message.error('名称更新失败'); loadData() }
+  }
 
   const onlineCount = nodes.filter(n => n.online).length
 
@@ -42,8 +48,8 @@ export default function NodeManager() {
           boxShadow: `0 0 6px ${v ? 'rgba(91,140,90,0.3)' : 'rgba(181,74,74,0.3)'}` }} />
       ),
     },
-    { title: '名称', dataIndex: 'name', key: 'name',
-      render: (v: string, r: NodeInfo) => <span><Text strong>{v}</Text>{r.is_origin && <Tag color="warning" style={{ marginLeft: 8 }}>Origin</Tag>}</span> },
+    { title: '名称', dataIndex: 'name', key: 'name', width: 190,
+      render: (v: string, r: NodeInfo) => <span style={{ display: 'flex', alignItems: 'center', gap: 6 }}><Input defaultValue={v} size="small" onPressEnter={e => updateName(r.id, e.currentTarget.value)} onBlur={e => { if (e.currentTarget.value !== v) updateName(r.id, e.currentTarget.value) }} />{r.is_origin && <Tag color="warning" style={{ margin: 0 }}>主节点</Tag>}</span> },
     { title: '地址', dataIndex: 'host', key: 'host', width: 130 },
     { title: '子网', dataIndex: 'subnet', key: 'subnet', width: 130, render: (v: string) => <Text code style={{ fontSize: 12 }}>{v}</Text> },
     { title: 'CPU', key: 'cpu', width: 80,
@@ -58,6 +64,12 @@ export default function NodeManager() {
         : <Text type="secondary">--</Text> },
     { title: '带宽', key: 'bw', width: 85,
       render: (_: any, r: NodeInfo) => r.metrics?.bandwidth_mbps != null ? <Text style={{ fontSize: 12 }}>{r.metrics.bandwidth_mbps.toFixed(1)} Mbps</Text> : <Text type="secondary">--</Text> },
+    { title: '网络入/出', key: 'network', width: 125,
+      render: (_: any, r: NodeInfo) => r.metrics?.network_in_mbps != null && r.metrics?.network_out_mbps != null ? <Text style={{ fontSize: 12 }}>{r.metrics.network_in_mbps.toFixed(1)} / {r.metrics.network_out_mbps.toFixed(1)} Mbps</Text> : <Text type="secondary">不可用</Text> },
+    { title: '观众', key: 'viewers', width: 65,
+      render: (_: any, r: NodeInfo) => r.metrics?.viewer_count != null ? r.metrics.viewer_count : <Text type="secondary">不可用</Text> },
+    { title: '媒体异常', key: 'media', width: 120,
+      render: (_: any, r: NodeInfo) => r.metrics?.media_metrics_available ? <Text style={{ fontSize: 12 }}>丢帧 {r.metrics.frame_drop_indicators ?? 0} / 丢包 {r.metrics.packet_loss_indicators ?? 0}</Text> : <Text type="secondary">不可用</Text> },
     { title: '连接', key: 'conn', width: 60,
       render: (_: any, r: NodeInfo) => r.metrics?.active_connections != null ? r.metrics.active_connections : <Text type="secondary">--</Text> },
     { title: '权重', dataIndex: 'weight', key: 'weight', width: 120,

frontend/src/admin/pages/StreamForm.tsx

@@ -3,6 +3,7 @@ import { useNavigate } from 'react-router-dom'
 import { Form, Input, Button, DatePicker, Typography, message, Space, Alert } from 'antd'
 import { CopyOutlined, ArrowLeftOutlined, CheckCircleOutlined } from '@ant-design/icons'
 import { createStream } from '../../api/streams'
+import axios from 'axios'
 
 const { Title, Text } = Typography
 const { TextArea } = Input
@@ -18,8 +19,12 @@ export default function StreamForm() {
       const res = await createStream({ title: values.title, description: values.description, cover_url: values.cover_url, scheduled_at: values.scheduled_at?.toISOString() })
       setResult({ rtmp_url: res.rtmp_url, stream_key: res.stream_key })
       message.success('直播已创建')
-    } catch { message.error('创建失败') }
-    setLoading(false)
+    } catch (error) {
+      const detail = axios.isAxiosError(error) ? error.response?.data?.detail : undefined
+      message.error(typeof detail === 'string' ? detail : '创建失败，请稍后重试')
+    } finally {
+      setLoading(false)
+    }
   }
 
   if (result) {

frontend/src/api/streams.ts

@@ -26,6 +26,7 @@ export interface WatchInfo {
   title: string
   status: string
   multicast_available: boolean
+  selected_node?: { id: string; name: string } | null
   lines: LineInfo[]
   qualities: QualityInfo[]
 }

frontend/src/viewer/pages/WatchPage.tsx

@@ -19,6 +19,7 @@ export default function WatchPage() {
   const [activeLine, setActiveLine] = useState<string>('')
   const [activeQuality, setActiveQuality] = useState<string>('')
   const hlsRef = useRef<Hls | null>(null)
+  const currentLine = info?.lines.find(line => line.node_id === activeLine)
 
   useEffect(() => {
     if (!id) return
@@ -102,6 +103,8 @@ export default function WatchPage() {
           </Tag>
         </Space>
         <Space size={16}>
+          <Tag style={{ margin: 0 }}>节点：{currentLine?.node_name || info.selected_node?.name || '不可用'}</Tag>
+          <Tag style={{ margin: 0 }}>清晰度：{activeQuality || '不可用'}</Tag>
           <Text style={{ color: '#949088', fontSize: 13, display: 'flex', alignItems: 'center', gap: 6 }}>
             <SignalFilled style={{ color: info.multicast_available ? '#5B8C5A' : '#5E5A52', fontSize: 12 }} />
             {info.multicast_available ? '组播' : '单播'}