https://uwsgi-docs.readthedocs.io/en/latest/Options.html#buffer-size
buffer-size
argument: required_argument
shortcut: -b
parser: uwsgi_opt_set_64bit
help: set internal buffer size
Set the max size of a request (request-body excluded), this generally maps to the size of request headers. By default it is 4k. If you receive a bigger request (for example with big cookies or query string) you may need to increase it. It is a security measure too, so adapt to your app needs instead of maxing it out.