Hi @javier-burón-garcía -- can't tell what the error is, since that's a generic Heroku error. Can you try running node app in Heroku console (I think it's called heroku run or something)?
[Solved] WebSocket connection to 'ws://forum.zaijiajiaoyu.net/socket.io/1/websocket/zot0tQJTmE7fAYON9D9A' failed: Error during WebSocket handshake: Unexpected response code: 502
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I am using the latest chrome. why does the websocket connection fail ?
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Assuming you're using nginx to proxy? Make sure it is up to date (> 1.3.13)
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You are correct. I am using ubuntu 12.04 and the version of nginx is low. After I upgrade nginx, it works. Thank you.
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I confirm the upgrade of the nginx increase the performance of nodebb. (index page was often realy slow / and some times crashes) The latest stable version of nxing has resolved this problems.
To upgrade on ubuntu:
sudo apt-get install software-properties-common sudo add-apt-repository ppa:nginx/stable sudo apt-get update sudo apt-get install nginx
