I am trying to detect the visitors country. I have the geoip option checked in the cloudflare dash and it adds a CF-IPCountry header to request headers but I am unable to pass this to my backend app through the nginx proxy. What am I doing wrong?
location / {
# forward application requests to the gunicorn server
proxy_pass http://localhost:8080;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header CF_IPCountry $http_cf_ipcountry; #this line is the culprit
}
EDIT:
The backend does not see this header. I am using flask and made a route to output all the request headers.
@app.route('/headers')
def header():
headers = request.headers
header_list = []
for h in headers:
header_list.append(h)
return jsonify(header_list)
Best Answer
By default, nginx ignores HTTP headers which contain underscores.
You have:
But this should be: