Route mqtt and websocket traffic through apache2 - ssl

Question

I have a emqx broker setup on Ubuntu EC2.
When I try to connect to emqx through websocket with IP address, it works fine.
But when I use subdomain, the connection fails.
My Apache Config is
<VirtualHost *:80>
ServerName subdomain.example.com
ServerAlias subdomain.example.com
ServerAdmin admin#domain.in
RewriteEngine On
#RewriteCond %{REQUEST_URI} ^/socket.io [NC]
#RewriteCond %{QUERY_STRING} transport=websocket [NC]
RewriteCond %{HTTP:Upgrade} =websocket [NC]
RewriteRule ^/mqtt/(.*) ws://localhost:8083/mqtt/$1 [P,L]
ProxyPreserveHost On
ProxyRequests Off
ProxyPass / http://localhost:8083/
ProxyPassReverse / http://localhost:8083/
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
Apache access Logs
I changed the log level of apache to 'debug' and these are the error logs. Looks like it is trying to find the /mqtt folder.
I have already enabled mode "proxy_wstunnel.load". How can I connect to mqtt and ws using subdomain?

Answer 1

Add a ServerAlias directive under ServerName
Example:
ServerName domain.com
ServerAlias subdomain.domain.com
Try adding this too
ProxyPass "/" "http://127.0.0.1:8083/mqtt"
ProxyPassReverse "/" "http://127.0.0.1:8083/mqtt"
If you're are not sure if the broker is using socket.io, then remove this line:
#RewriteCond %{REQUEST_URI} ^/socket.io