Herewith a dump from what I posted on LinuxQuestions then realised it’s probably a Meteor or at least reactive thing:
I have a Meteor app http://localhost:3000 and an app called OpenKM running at http://localhost:8080
Such apps are difficult to (and shouldn’t be) run on port 80.
So I have apache (apache2) which I’ve used most of my life and I can get the meteor app running from http://localhost by doing this :
ProxyPass / http://localhost:3000/
ProxyPassReverse / http://localhost:3000/
But if I change it to this http://localhost/astro by doing this :
ProxyPass /astro http://localhost:3000/
ProxyPassReverse /astro http://localhost:3000/
It stops working
The same goes for OpenKM - but why?
I’ve omitted a great deal of config stuff from here because I genuinely feel it’s irrelevant given the scenario painted above(?)
+++++++++++++++++++
After 5 hours more digging it turns out to be a mangled request due to the redirect from Apache.
If you want to run Meteor behind apache2 then (it does work) so this goes into /etc/apache2/sites-enabled/000-default.conf :
[CODE]<VirtualHost *:80>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
ProxyPreserveHost On
ProxyRequests Off
ServerName localhost
<Location / >
ProxyPass http://localhost:3000/
ProxyPassReverse http://localhost:3000/
</Location>
#ProxyPass / http://localhost:8080/
#ProxyPassReverse / http://localhost:8080/
</VirtualHost>[/CODE]
and it works despite this error message in the browser console log :
sockjs-0.3.4.js:1275 WebSocket connection to 'ws://localhost/sockjs/125/sq7vbfp6/websocket' failed: Error during WebSocket handshake: Unexpected response code: 400
So the headers are getting mangled somewhere but I don’t fully understand why at this point. But I will soon and post here.
If I try to add the sub-url [sorry , forgot the terminology here] based proxy (i.e. /astros) then it stops working with this error :
sockjs-0.3.4.js:854 GET http://localhost/sockjs/info?cb=e6bj3cvszb 404 (Not Found)
If you use apache2 (fyi I’m on Linux Mint18.2 and use Ubuntus version of apache) then you also need to do this :
[CODE]a2enmod proxy
a2enmod proxy_http
service apache2 restart[/CODE]
So, not solved yet but getting closer.