Corporate Firewalls Blocking WebSockets

[Eric B]

Not sure if this is a Tornado specific problem or Nginx.

https://github.com/neurosnap/simple-stock-exchange

That's the project, I don't get how some firewalls are able to block websockets, any help would be greatly appreciated.  Thanks!

[Phyo Arkar]

Yes , most web proxies , firewalls will block websocket.

To work around that use Longpolling , it is more acceptable to Co-operate firewalls and web proxies. 

If Everything else fails, fall back to Normal Polling , it always work.But defeat the purpose of using Tornado.

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[Russ Weeks]

I've used sockjs-tornado in the past, it uses websockets where possible but falls back to long-polling (or a number of other transport mechanisms) if websockets are not available. It works well. 

https://github.com/mrjoes/sockjs-tornado

-Russ

[David Nellessen]

Or encrypt your Websockets with SSL (WSS). That works well in our case.