How to setup a Nginx reverse proxy for an ASP.NET app URL

Question

I have an ASP.NET based app (on IIS8); which loads perfectly when visiting it directly at: http://localhost:89/files

When I visit my ngnix reverse proxy URL: http://localhost/files, instead of loading the webpage, the file Login.aspx is downloaded by the web browser. I don't have any issues with reverse proxying the root domain (for regular HTML webpages).

I would like to resolve this issue without modifying my ASP.NET app if at all possible. Below, is the configuration I'm using in nginx.conf:

server {
    listen       80;
    server_name  localhost;

    location / {
        root   "C:\inetpub\wwwroot";
        index  index.html index.htm;
    }

    location /files {
        proxy_pass          http://localhost:89/files/;
        proxy_http_version  1.1;
        proxy_set_header    Upgrade $http_upgrade;
        proxy_set_header    Connection keep-alive;
        proxy_set_header    Host $host;
        proxy_cache_bypass  $http_upgrade;
        proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header    X-Forwarded-Proto $scheme;
    }

}

Maybe, there's something I need to change on my Web.config file for the ASP.NET app?

@IvanShatsky, Thank you that worked!! There's no way I would have guessed that. I'm so glad I asked here. — MKANET, Nov 05 '20 at 23:05
Read [this](https://stackoverflow.com/questions/53649885/a-little-confused-about-trailing-slash-behavior-in-nginx) thread for the explanation. — Ivan Shatsky, Nov 05 '20 at 23:07
Thank you. @IvanShatsky if you want to post your solution as a Stackoverflow official answer, I can mark it as the Answer. — MKANET, Nov 05 '20 at 23:49
Thanks, don't think it worth to be an answer, you'd better upvote the Richard Smith's explanation of `proxy_pass` behavior :) — Ivan Shatsky, Nov 08 '20 at 01:35
Done. Now I know how to use regex for proxy_pass. Thanks again. — MKANET, Nov 08 '20 at 07:10
If you have sovled it, you can post the solution to help others with similar problem. — Bruce Zhang, Nov 10 '20 at 02:50
@BruceZhang, The solution is the first comment here, I'm not sure if I should answer my own question. — MKANET, Nov 11 '20 at 07:09

How to setup a Nginx reverse proxy for an ASP.NET app URL

0 Answers0