fix: 前端时钟校准问题

backend/monitoring/views.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import json
+import time
 
 from django.views.decorators.csrf import csrf_exempt
 from django.http import HttpResponse, StreamingHttpResponse
@@ -31,6 +32,20 @@ def network_latest(request):
     return Response(network_service.get_latest())
 
 
+@api_view(["GET"])
+def clock_calibration(request):
+    server_received_unix_ns = time.time_ns()
+    server_sent_unix_ns = time.time_ns()
+    response = Response(
+        {
+            "server_received_unix_ms": round(server_received_unix_ns / 1_000_000.0, 3),
+            "server_sent_unix_ms": round(server_sent_unix_ns / 1_000_000.0, 3),
+        }
+    )
+    response["Cache-Control"] = "no-store, no-cache, must-revalidate, max-age=0"
+    return response
+
+
 @api_view(["GET"])
 def video_status(request):
     return Response(video_service.get_status())