Version 0.30.4 cause tarlette.requests.ClientDisconnect exception in await request.body() in FastAPI framework

[oleh-mykytiuk]

Using 0.30.4 uvicorn with FastAPI app cause ConnectionClosed error:

I have the route that acts as a proxy for legacy service:

import httpx

legacy_backend_client = httpx.AsyncClient()
legacy_proxy = APIRouter(include_in_schema=False)


@legacy_proxy.route(
    '/{full_path:path}',
    methods=[
        'GET',
        'PATCH',
        'POST',
        'PUT',
        'DELETE',
        'OPTIONS',
    ],
    include_in_schema=False,
)
async def proxy_for_legacy(request: Request):
    # Prepare headers (add additional if needed)
    headers = request.headers.mutablecopy()
    headers.setdefault(HTTP_CORRELATION_ID_HEADER, request.state.correlation_id)

    logger.debug('request proxied URL: %s', request.url.path)

    ...

    # Step 2. Request the legacy backend
    legacy_backend_url = urljoin(LEGACY_BASE_ADDR, request.url.path)
    logger.info('legacy path [%s]: %s', request.method, legacy_backend_url)

    try:
        request_body = await request.body()  <-- stop working
    except starlette.requests.ClientDisconnect:
        return JSONResponse(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            content={'message': 'NSomething wrong'},
        )

After updating to 0.30.4, this code stopped working due to a permanent CloentDisconnect exception.

[Kludex]

This should be fixed in 0.30.5.