result Response(500) if node unreachable

apps/tgbot/tgbot/handlers/helpers.py

@@ -1,4 +1,4 @@
-from httpx import AsyncClient, Timeout
+from httpx import AsyncClient, Timeout, Response, ConnectError
 from typing import List
 from core.coretypes import APINode
 
@@ -15,8 +15,12 @@ def check_int(value) -> bool:
 async def send_api_requests(endpoint: str, data: dict, nodes: List[APINode]):
     for node in nodes:
         data.update(dict(token=node.token))
+        try:
             async with AsyncClient(timeout=Timeout(timeout=100.0)) as client:
                 result = await client.get(
                     f"{node.address}/{endpoint}", params=data
                 )
+        except ConnectError:
+            # We yield 500 response when backend is offline
+            result = Response(500)
         yield result