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.