Polling behind a reverse proxy #29
Description
As I understand it, the nginx reverse proxy doesn't support websockets, so when Cloud9 is behind an SSL nginx proxy (https://c9host --> http://c9host:3131), smith.io reverts to the polling mechanism. In this case, the Cloud9 IDE loads well enough and I can open and view files, but it isn't possible to edit anything. The javascript console indicates that engine.io-dev.js is trying to open a connection to http://c9host:3131/smith.io/server/?uid=[uid]&transport=polling, but this should be https://c9host/smith.io/etc.
If I change the return value of Polling.prototype.uri() in engine.io-dev.js from:
return schema + '://' + this.host + port + this.path + query;
to:
return this.path + query;
the javascript error goes away and I can edit files in the Cloud9 IDE, as expected.
I'm not sure whether the full URI is really needed here and this workaround is going to break something else, but there are others interested in putting Cloud9/smith.io behind nginx (e.g. cloud9 #2161), so I'm sure a permanent solution would be greatly appreciated!