WebSocket握手期间出错：缺少“升级”标头（Apache 2.4 + mod_proxy_wstunnel）

Question

I have Apache 2.4 running on the server and have setup a subdomain to handle my Node.JS web app which also uses websockets.

My Apache site config for this is:

<VirtualHost *:80> 
  ProxyPreserveHost On
  ProxyRequests Off
  ServerName ws.mysite.io
  ProxyPass /ws/ ws://1.2.3.5:6789/
  ProxyPassReverse /ws/ ws://1.2.3.5:6789/
  ProxyPass / http://1.2.3.5:6789/
  ProxyPassReverse / http://1.2.3.5:6789/
</VirtualHost> 

So that when users come to http://ws.mysite.io/ - they get served the html from my node.js app (using express) and the html has a javascript part communicating back with the node.js app via websocket on ws.mysite.io/ws/ which is "tunneled" to ws://1.2.3.5:6789/ .

I get a situation where on a home wifi - all works. No problems.

At work, we do have firewall, proxy... but i don't know exact limitations or blocks, but what happens is that when i open http://ws.mysite.io/ I get in Chrome console:

WebSocket connection to 'ws://ws.mysite.io/ws/' failed: Error during WebSocket handshake: 'Upgrade' header is missing

Is this due to the work proxy "cutting" something off? Is there any chance to set up a "bullet-proof" tunnel to overcome things like that?

Answer 1

As far as I know, you don't need this line:

ProxyPassReverse /ws/ ws://1.2.3.5:6789/