How to pass result from application server (flask) to proxy_pass nginx?

Question

Nginx

In general, there is an nginx config:

location /proxy/ {
proxy_pass % result of the function execution in Flask%
}

Flask:
@app.route('/proxy/')
def proxy(): #processing
something
return ' https://yandex. en '

Is it possible to do this? Already googled it, didn't find anything. I know that the built-in nginx variables can be substituted, but it is necessary to get this value from the application server.
Thank you experts in advance.

Answer 1

At the web server level, two data sources are processed - HTTP headers and the request body in the case of POST.
Tell us in more detail what you want to do, because it seems that something is strange.