Blank page: error vscode Handshake timed out

OS/Web Information

• Web Browser: Google Chrome Version 89.0.4389.114 (Official Build) (64-bit)
• Local OS: Ubuntu 21.04
• Remote OS: Raspbian GNU/Linux 10 (buster)
• Remote Architecture: armv7l GNU/Linux
• code-server --version:3 .9.2

Steps to Reproduce

1. SSH in to raspberry pi
2. Run this curl -fsSL https://code-server.dev/install.sh | sh
3. Takes 22m usually
4. Go to hosted site through local network, it’s blank and in the logs it gives this error:

error vscode Handshake timed out {"token": "..."}

1. It was working fine before the upgrade.
2. Maybe you can also add some fresh install instructions.

Expected

Browser should show coder as usual

Actual

Blank page.

Screenshot

Notes

This issue can be reproduced in VS Code: Yes/No

[snoglobe]

I found out that if I connect to my server through it’s local IP then I don’t have any issues, but if I go to the domain name that I have pointed to my reverse proxy which does its magic and brings me to the code-server instance I get the blank screen. I can see the password screen just fine, but the actual app is blank.

[TobiRoby]

I suddenly experienced the time out issue in my setup two days ago. Here is how I solved it.

Setup:

• local: wsl ubuntu 20.04
• remote: code-server (3.9.3) in docker on ubuntu 18.04-LTS running in azure
• network VPN GlobalProtect

Besides the timeouts I also noticed that initializing a ssh connection took up to 10 seconds. After a quick web search pointed me towards not optimal/ compatible network settings with VPN. So I set the MTU settings of my local network adapter to 1200. Not only is ssh blazing fast now, but all code-server timeouts vanished.

So the timeouts are related to the network and not code-server itself. But I still have no clue, why my setup stopped working from one day to the other…