Files
vercel/packages/python/test/fixtures/32-fail-duplicate-header/index.py
Andy McKay ba498f3a8e [python] Cope with duplicate header values (#9205)
There are times when a request can arrive for a Python function with headers as a list. One of those examples is this header `x-vercel-proxied-for` which apparently is set twice. Example:

`[b'x-vercel-proxied-for', [b'207.81.134.243', b'172.71.147.74']]`

I took a quick scan through the other Python server implementations and I don't think any of them manipulate the value of the HTTP headers, the way the ASGI one does so I think we are good there.

To reproduce:

`curl https://..../ -H "foo: bar" -H "foo: bar"`

Will fail.

Fixes: https://github.com/vercel/vercel/issues/9132
2023-02-03 17:01:02 +00:00

15 lines
303 B
Python

async def app(scope, receive, send):
assert scope["type"] == "http"
await send(
{
"type": "http.response.start",
"status": 200,
}
)
await send(
{
"type": "http.response.body",
"body": b"hello world"
}
)