flask url_for behind a reverse proxy

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I have a flask application running on a server (192.168.1.1:8080) located behind a reverse proxy. Let's say, the url https://foo.bar.com/myapp point to my flask app, i.e. to 192.168.1.1:8080.

I am in trouble with the url_for flask function, as it returns something like http://192.168.1.1:8080/blabla (giving blabla as parameter). How to proceed so that url_for returns https://foo.bar.com/myapp/blabla instead ?

In fact, my application uses a CAS authentication system. So that the ticket gets validate by the CAS server, I need to provide an URL of the shape https://foo.bar.com/....

Any help would be appreciate.

cas flask reverse-proxy
1 Answers

I found a solution using ProxyFix from werkzeug :

from werkzeug.middleware.proxy_fix import ProxyFix
app.wsgi_app = ProxyFix(app.wsgi_app, x_host=1)
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