Fix BrokenResourceError on starlette. See tiangolo/fastapi#4041 for m…

…ore details.

Add middleware for handle requests without headers in request.

bug_master/app.py

@@ -7,6 +7,7 @@
 from fastapi import FastAPI, Request, Response
 from fastapi.routing import APIRoute, APIRouter
 from slack_sdk import signature
+from starlette.responses import JSONResponse, StreamingResponse
 from uvicorn_loguru_integration import run_uvicorn_loguru
 
 from . import consts
@@ -56,6 +57,14 @@ async def custom_route_handler(request: Request) -> Response:
 signature_verifier = signature.SignatureVerifier(consts.SIGNING_SECRET)
 
 
+@app.middleware('http')
+async def headers_middleware(request: Request, call_next: Callable):
+    if not hasattr(request, "headers"):
+        return JSONResponse(content={"message": "Invalid request"}, status_code=401)
+    response: StreamingResponse = await call_next(request)
+    return response
+
+
 @router.post("/slack/config")
 async def config(request: Request):
     body = {k.decode(): v.pop().decode() for k, v in parse_qs(await request.body()).items()}

requirements.txt

@@ -1,8 +1,8 @@
 uvicorn==0.15.0
-fastapi==0.70.0
+fastapi==0.71.0
 loguru==0.5.3
 slackers==1.0.0
-starlette==0.16.0
+starlette==0.17.1
 aiohttp==3.8.0
 PyYAML==6.0
 slack_sdk==3.11.2