Not sure when and why it happen - BI/develop

[ghost]

12:14:22 ERROR root: An error occurred in FastAPI
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/anyio/streams/memory.py", line 94, in receive
    return self.receive_nowait()
  File "/usr/local/lib/python3.10/site-packages/anyio/streams/memory.py", line 89, in receive_nowait
    raise WouldBlock
anyio.WouldBlock

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 41, in call_next
    message = await recv_stream.receive()
  File "/usr/local/lib/python3.10/site-packages/anyio/streams/memory.py", line 114, in receive
    raise EndOfStream
anyio.EndOfStream

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/errors.py", line 159, in __call__
    await self.app(scope, receive, _send)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 63, in __call__
    response = await self.dispatch_func(request, call_next)
  File "/phovea/./tdp_core/middleware/request_context_middleware.py", line 18, in dispatch
    response = await call_next(request)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 44, in call_next
    raise app_exc
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 34, in coro
    await self.app(scope, request.receive, send_stream.send)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 63, in __call__
    response = await self.dispatch_func(request, call_next)
  File "/phovea/./tdp_core/security/manager.py", line 183, in refresh_token_middleware
    response = await call_next(request)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 45, in call_next
    raise RuntimeError("No response returned.")
RuntimeError: No response returned.

[ghost]

it still happen (now also in EINS):

13:12:53 ERROR root: An error occurred in FastAPI
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/anyio/streams/memory.py", line 94, in receive
    return self.receive_nowait()
  File "/usr/local/lib/python3.10/site-packages/anyio/streams/memory.py", line 89, in receive_nowait
    raise WouldBlock
anyio.WouldBlock

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 41, in call_next
    message = await recv_stream.receive()
  File "/usr/local/lib/python3.10/site-packages/anyio/streams/memory.py", line 114, in receive
    raise EndOfStream
anyio.EndOfStream

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/errors.py", line 159, in __call__
    await self.app(scope, receive, _send)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 63, in __call__
    response = await self.dispatch_func(request, call_next)
  File "/phovea/./tdp_core/middleware/request_context_middleware.py", line 18, in dispatch
    response = await call_next(request)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 44, in call_next
    raise app_exc
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 34, in coro
    await self.app(scope, request.receive, send_stream.send)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 63, in __call__
    response = await self.dispatch_func(request, call_next)
  File "/phovea/./tdp_core/security/manager.py", line 183, in refresh_token_middleware
    response = await call_next(request)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 45, in call_next
    raise RuntimeError("No response returned.")
RuntimeError: No response returned.

[ghost]

I found this: https://stackoverflow.com/questions/71222144/runtimeerror-no-response-returned-in-fastapi-when-refresh-request

[puehringer]

This PR seems to solve the underlying issue: encode/starlette#1706
Let's see if it is merged soon, otherwise I would opt for the workaround 2 in the linked stackoverflow thread. What do you think @anita-steiner @thinkh?

[ghost]

@puehringer because it's not so urgent, we can wait for the merge