[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.