Theia: wss socket connection over apache not working (works good with http request)

[cosmoarunn]

Description

theia works well when used ipaddress like http://my.ip.add.ress:3000
Now, I set a proxy server https://sub.mydomain.tld to http://my.ip.add.ress:3000 and things get wrong.

Reproduction Steps

On the chrome console, i get this message
WebSocket connection to 'ws://ide.gsunitedtechnologies.com/services' failed: Error during WebSocket handshake: Unexpected response code: 404 v @ index.js:123

Event bubbles: false cancelBubble: false cancelable: false composed: false currentTarget: WebSocket {url: "ws://ide.gsunitedtechnologies.com/services", readyState: 3, bufferedAmount: 0, onopen: null, onerror: ƒ, …} defaultPrevented: false eventPhase: 0 isTrusted: true path: [] returnValue: true srcElement: WebSocket {url: "ws://ide.gsunitedtechnologies.com/services", readyState: 3, bufferedAmount: 0, onopen: null, onerror: ƒ, …} target: WebSocket {url: "ws://ide.gsunitedtechnologies.com/services", readyState: 3, bufferedAmount: 0, onopen: null, onerror: ƒ, …} timeStamp: 947.5099999981467 type: "error" __proto__: Event

OS and Theia version:
OS: Ubuntu 16.04 LTS
Theia Version : 0.11.0

Diagnostics:

[akosyakov]

I don't think we do anything special with web sockets in Theia. You will need to have a look into your proxy configuration. Maybe @geropl can have an idea?

[vanilla-thunder]

I just have installed theia in docker container behind apache proxy, here is my config:
<IfModule mod_ssl.c> <VirtualHost *:443> DocumentRoot /srv/www ServerName subdomain.server.com RewriteEngine On RewriteCond %{HTTP:Upgrade} =websocket [NC] RewriteRule /(.*) ws://localhost:3000/$1 [P,L] RewriteCond %{HTTP:Upgrade} !=websocket [NC] RewriteRule /(.*) http://localhost:3000/$1 [P,L] ... </VirtualHost> </IfModule>
haven't tested everything yet, but seems ok so far

[samos667]

He doesn't work for me..

[cosmoarunn]

I just have installed theia in docker container behind apache proxy, here is my config:

<IfModule mod_ssl.c>
<VirtualHost *:443>
  DocumentRoot /srv/www
  ServerName subdomain.server.com
  RewriteEngine On
  RewriteCond %{HTTP:Upgrade} =websocket [NC]
  RewriteRule /(.*)           ws://localhost:3000/$1 [P,L]
  RewriteCond %{HTTP:Upgrade} !=websocket [NC]
  RewriteRule /(.*)           http://localhost:3000/$1 [P,L]
  ...
</VirtualHost>
</IfModule>

haven't tested everything yet, but seems ok so far

That's exactly the right solution. it works without issue. I did it with nginx directives, updated the code below.

[cosmoarunn]

@vanilla-thunder
The direct solutions is considering this as a websocket proxy. what you did seems to be working without issues. I tested with nginx as well.

For nginx,

location / {
    proxy_pass http://0.0.0.0:8080/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
}