Discouse passes localhost uri as oauth redirect_uri

[marijn (Marijn Haverbeke)]

I’ve set up what should be a vanilla Docker-based Discourse install (except that I’ve imported an existing database from another, non-Docker install). Things mostly work, but OAuth via github (as well as twitter) fails with a message=redirect_uri_mismatch error. Inspecting the actual packets that are being sent over, I see this in the url:

redirect_uri=http%3A%2F%2Flocalhost%3A6080%2Fauth%2Fgithub%2Fcallback

So that explains that error message. What can I do to make Discourse use its real url (discuss.codemirror.net in this case)?

Edit: Forgot to mention, the container isn’t directly binding port 80/443, but being proxied through an nginx, since the host serves other sites as well.

[sam (Sam Saffron)]

What is your container config?

[riking (Kane York)]

Edit: Forgot to mention, the container isn’t directly binding port 80/443, but being proxied through an nginx, since the host serves other sites as well.

Did you forget this part of the nginx config?

Running other websites on the same machine as Discourse

proxy_pass http://unix:/var/discourse/shared/standalone/nginx.http.sock:;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $proto;
}

[marijn (Marijn Haverbeke)]

Thanks! I was missing the extra nginx config lines, adding those solved the issue.