nginx gives 400 bad request for urls with whitespace

Asked Mar 19 '18 at 21:41

Active Mar 19 '18 at 21:41

Viewed 2,746 times

I have nginx proxying requests to a node.js web app in the backend on a Ubuntu box. For requests to api.example.com with whitespace in the url get a 400 bad request error. Think the problem line of code is:

        proxy_pass http://127.0.0.1:3002$uri$is_args$query_string;

however not sure how to rewrite it.

This is how the site configuration at /etc/nginx/sites-available/default looks:

server {
    listen 80;
    server_name example.com;
    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
     }
}
server {
    listen 80;
    server_name api.example.com;
    location / {
        proxy_pass http://127.0.0.1:3002$uri$is_args$query_string;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
     }

asked Mar 19 '18 at 21:41

muqeet mohammed

You should try: `proxy_pass http://127.0.0.1:3002;` – Richard Smith Mar 19 '18 at 22:32
I also need the query string to persist. – muqeet mohammed Mar 20 '18 at 00:53
1

proxy_pass forwards all the things after the hostname – Larry.He Mar 20 '18 at 02:03
unless am missing something `proxy_pass http://127.0.0.1:3002;` was not passing along the querystrings hence had to resort to explicitly rewriting the uri to include the querystring. – muqeet mohammed Mar 20 '18 at 11:00
Does this answer your question? [how to avoid nginx to replace %20 by whitespace when using as a proxy (proxy\_pass) ?](https://stackoverflow.com/questions/8838905/how-to-avoid-nginx-to-replace-20-by-whitespace-when-using-as-a-proxy-proxy-pas) – A.Casanova May 23 '23 at 08:05

nginx gives 400 bad request for urls with whitespace

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