Uvicorn hangs when trying to include large inputs with body-size limit and more_body=True

[AshwathsGIT]

ASGI [4] Receive {'type': 'http.request', 'body': '<260403 bytes>', 'more_body': True}

The fastapi endpoint works when the input is less than 260k bytes, but when a larger input is given, it hangs with the above statement from the trace logs before even getting to the first line of the endpoint.

I'm trying to find a way to increase the body size limit. I came across the --limit-request-body, a command-line argument which on trying it said, it's not a valid option. If this is a valid option in previous version please let me know which version I should use.

Or if there an alternative way, If anyone has faced it before, please give your thoughts on handling this. Thanks.

[RK-GOML]

I found a python library that takes care of this via FastAPI middleware. If the upload file is too large it will throw a 413 HTTP error; "Error: Request Entity Too Large"

from starlette_validation_uploadfile import ValidateUploadFileMiddleware

from fastapi import (
FastAPI,
Path,
File,
UploadFile,
)

app = FastAPI()

#add this after FastAPI app is declared
app.add_middleware(
ValidateUploadFileMiddleware,
app_path="/",
max_size=1048576, #1Mbyte
file_type=["text/plain"]
)

@app.post("/")
async def root(file: UploadFile = File(...)):
#...do something with the file
return {"status: upload successful"}