[Bug]: Nginx dramatic port proxying ：302 not found

[damonwan1]

Is there an existing issue for this?

• I have searched the existing issues

OS/Web Information

• Web Browser: Chrome
• Local OS: win10
• Remote OS: Centos 7.6
• Remote Architecture: ARM
• code-server --version: 4.3.0

Steps to Reproduce

My requirement is to achieve dramatic port proxy with nginx and code-server.

For Example，there is a situation.

1. one user access our website and click "create my vscode"button, it will run code-server by "code-server --auth none --host 0.0.0.0 --port 20000", so remote server A has started a code-server service on port 20000. (Different user has different port number20001,20002,etc.)
2. User access the code-server website by url "http://mywebsite.com/vscode/20000/"
3. The remote application server B has deployed nginx, the user request will firstly target serverB and the nginx on serverB proxy the request to server A(code-server). sry, it is a simply process.
4. The nginx conf is below. I have tried all the method of conf, but it didn't work.

                location ~* /vscode/([0-9]+)/
                {
                         proxy_pass  http://137.2.2.1:$1/;
                         proxy_set_header X-Real-IP $remote_addr;
                         proxy_set_header Host $host;
                         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                         proxy_http_version 1.1;
                         proxy_set_header Upgrade $http_upgrade;
                         proxy_set_header Connection "upgrade";
                         proxy_redirect off;
                }

It didn't work ,too.

              location ^~/vscode/20000/
                {
                         set $ter 20000
                         proxy_pass  http://137.2.2.1:$ter/;
                         proxy_http_version 1.1;
                         proxy_set_header Upgrade $http_upgrade;
                         proxy_set_header Connection "Upgrade";
                }

However, the non-dramatic params work well.

           location ^~/vscode/20000/
                {
                         proxy_pass  http://122.10.10.112:20000/;
                         proxy_http_version 1.1;
                         proxy_set_header Upgrade $http_upgrade;
                         proxy_set_header Connection "Upgrade";
                }

Expected

Actually, i really need a dramatic port proxy, by http://mywebsite.com/vscode/20001/, http://mywebsite.com/vscode/20002/,http://mywebsite.com/vscode/20003/ automaticly.###

Actual

The wrong proxying process throws 302 not found.

I checked it by chrome F12, it could find a lot of 302 redirect request. by the way, i have flush my coockies.

Logs

No response

Screenshot/Video

Does this issue happen in VS Code?

• I cannot reproduce this in VS Code.

Are you accessing code-server over HTTPS?

• I am using HTTPS.

Notes

Thanks a lot for solving this problem. we have tried so many ways and viewed a lot of issues, googles...

[jsjoeio]

Thanks for details! Could you provide steps to create a minimal reproduction? I haven't used nginx but happy to try to reproduce this locally. I'm going to transfer this to a Discussion instead.

[damonwan1]

1. Install nginx on Server A
2. The nginx.conf file on Server A is as below, start the nginx with the conf file.

user  root;
worker_processes  2;

error_log  logs/error.log;
error_log  logs/error.log  notice;
error_log  logs/error.log  info;

events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    keepalive_timeout  6000s;
    client_max_body_size  20000m;
    proxy_max_temp_file_size 0;
    proxy_buffering off;
    send_timeout 1200s;
    proxy_read_timeout 120s;

    server {
		listen       80 default_server;
		server_name  localhost;
		index index.html index.htm index.php;
		 
        location ^~ /vscode/20000/
        {
            proxy_pass  http://127.0.0.1:20000/;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
        } 
		
      error_page   500 502 503 504  /50x.html;
      location = /50x.html {
          root   html;
      }
    }
}

3. ssh port forwarding: $ ssh -L <local-port-to-listen>:<remote-host>:<remote-port> <sshserver>
   Specifically， ssh -o StrictHostKeyChecking=no -L 20000:137.2.2.2:20000 user@sshserver

4. On Server B（137.2.2.2），start code-server service.
   code-server --auth none --host 0.0.0.0 --port 20000

5. Now you can access the port 20000 of server A to use code server.

[damonwan1]

1. If i change the nginx.conf to nginx2.conf, it doesn't work.

user  root;
worker_processes  2;

error_log  logs/error.log;
error_log  logs/error.log  notice;
error_log  logs/error.log  info;

events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    keepalive_timeout  6000s;
    client_max_body_size  20000m;
    proxy_max_temp_file_size 0;
    proxy_buffering off;
    send_timeout 1200s;
    proxy_read_timeout 120s;

    server {
		listen       80 default_server;
		server_name  localhost;
		index index.html index.htm index.php;
		 
        location ^~ /vscode/20000/
        {
            set $sigtest 20000;
            proxy_pass  http://127.0.0.1:$sigtest/;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
        } 
		
      error_page   500 502 503 504  /50x.html;
      location = /50x.html {
          root   html;
      }
    }
}

2. I tried the conf with Jupyter Lab, it is okay. But not code-server.
3. It seems like the conf1 and conf2 is the same results, but it doesn't.

[damonwan1]

1. Actually, what i want is dramatically port forwarding by nginx as nginx3.conf

user  root;
worker_processes  2;

error_log  logs/error.log;
error_log  logs/error.log  notice;
error_log  logs/error.log  info;

events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    keepalive_timeout  6000s;
    client_max_body_size  20000m;
    proxy_max_temp_file_size 0;
    proxy_buffering off;
    send_timeout 1200s;
    proxy_read_timeout 120s;

    server {
		listen       80 default_server;
		server_name  localhost;
		index index.html index.htm index.php;
		 
        location ~^/vscode/([0-9]+){
            	 	proxy_pass  http://127.0.0.1:$1;
                        proxy_set_header X-Real-IP $remote_addr;
                        proxy_set_header Host $host;
                        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                        proxy_http_version 1.1;
                        proxy_set_header Upgrade $http_upgrade;
                        proxy_set_header Connection "upgrade";
                        proxy_redirect off;
		} 
		
      error_page   500 502 503 504  /50x.html;
      location = /50x.html {
          root   html;
      }
    }
}

2. And the code-server on Server B(137.2.2.2) start with changeable params --port.
3. I don't know it is nginx conf problem or code-server problem. Who can help me , Thanks very much!
4. The nginx3.conf works well on Jupyter Lab.

[jsjoeio]

If you remove nginx from the equation, does code-server work?