Connection refused - When running app

[rajat42059]

Hi,

I have updated my r studio recently to 2022.07.2 Build 576 , I am able to successfully launch my r studio, but when I am trying to run a simple hello world I am getting Connection refused message in the browser, and in network tab I can see 500 error

Nginx file-
server {
listen 8080 ssl;

  location / {
        proxy_pass http://localhost:8787;  
        proxy_redirect $scheme://$host:$server_port $scheme://test.com/;
        proxy_set_header X-RStudio-Request $scheme://$host:$server_port$request_uri;
        proxy_set_header X-RStudio-Root-Path /svc/rstudio/4335456;
        proxy_set_header Host $host:$server_port;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_read_timeout 20d;
        proxy_buffering off;
    }

}

[rstub]

Your configuration differs from the one in the documentation as RStudio Workbench Administration Guide - 30  Running with a Proxy. In particular the proxy_redirect and the first two proxy_set_header are not in the docs. Do you have the map code outside of the server section?

[rajat42059]

@rstub This is my complete file

pid "/home/docker/nginx/tmp/nginx.pid";
error_log "/home/docker/nginx/log/error.log";

events { }

http {
    map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }

    client_body_temp_path  "/home/docker/nginx/tmp/client_body" 1 2;
    proxy_temp_path "/home/docker/nginx/tmp/proxy" 1 2;
    fastcgi_temp_path "/home/docker/nginx/tmp/fastcgi" 1 2;
    scgi_temp_path "/home/docker/nginx/tmp/scgi" 1 2;
    uwsgi_temp_path "/home/docker/nginx/tmp/uwsgi" 1 2;
    access_log  "/home/docker/nginx/log/access.log";
    error_log "/home/docker/nginx/log/error.log";

    client_max_body_size 1024m;

    ssl_certificate /etc/ssl/rstudio/server.crt;
    ssl_certificate_key /etc/ssl/rstudio/server.key;
    ssl_ciphers Ett;
    ssl_protocols TLSv1.2;

    server {
        listen 8080 ssl;

 		      location / {
            proxy_pass http://localhost:8787;         
            proxy_redirect $scheme://$host:$server_port https://test.com;

            proxy_set_header X-RStudio-Request $scheme://$host:$server_port$request_uri;
            proxy_set_header X-RStudio-Root-Path /svc/rstudio/1111;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            proxy_read_timeout 20d;
            proxy_buffering off;
        }
        location /nginx_status {
 	        stub_status on;
            access_log off;
 	        allow 127.0.0.1;	#only allow requests from localhost
 	        deny all;		#deny all other hosts
        }
    }
}

[rstub]

@rajat42059

            proxy_redirect $scheme://$host:$server_port https://test.com;

            proxy_set_header X-RStudio-Request $scheme://$host:$server_port$request_uri;
            proxy_set_header X-RStudio-Root-Path /svc/rstudio/1111;

The above lines have no analogue in the documentation. Can you delete them and try again?

[rajat42059]

@rstub ,
after removing above lines I am getting this
in header this url is forming

I have also added proxy_set_header Host $host:$server_port;

Location:

https://https:/auth-sign-in?appUri=%2F

This content is blocked. Contact the site owner to fix the issue.

[rajat42059]

@rstub can u please help here

[rstub]

Currently I do not see where this duplicated "https" in the location might come from. Can you provide a reproducible example, e.g. using Docker files?

[rajat42059]

@rstub

I was using rstudio version 1.2.1335 with following nginx.conf

    location / {
        proxy_pass http://localhost:8787;
        proxy_redirect http://localhost:8787/ $scheme://$http_host/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_read_timeout 20d;
        proxy_buffering off;
    }

and above version was working very smoothly with this conf,
But now when we upgraded to r sudio version 2022.07.2+576 it started giving issue

https://localhost:8787/auth-sign-in?appUri=%2F

with status code 302

https://localhost:8787/auth-sign-in?appUri=%2F (“frame-src”).
pfa screenshot -

[rstub]

I have tried to reproduce the issue using a minimal nginx configuration that follows our documentation:

$ cat docker-compose.yml
services:
    rstudio:
        image: rocker/rstudio
        environment:
        - PASSWORD=rstudio12

    proxy:
        image: nginx
        volumes:
        - ./nginx.conf:/etc/nginx/nginx.conf
        ports:
        - "80:80"
$ cat nginx.conf
events { }

http {
    map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }

    server {
        listen 80;

        location / {
            proxy_pass http://rstudio:8787;         
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
	    proxy_set_header Host $host:$server_port;
            proxy_read_timeout 20d;
        }
    }	
}
$ docker-compose -d

So far everything is working as expected. Can you maybe use this configuration and change it such that your issue is reproduced?

[rajat42059]

@rstub

            proxy_pass http://rstudio:8787;         

why have u used rstudio:8787, isn't it should be proxy_pass http://localhost:8787;

[rstub]

@rajat42059

why have u used rstudio:8787, isn't it should be proxy_pass http://localhost:8787;

With docker-compose the proxy server runs on a different "node" than RStudio Server. The former is called proxy and the latter is called rstudio.