My mashup is hosted on an apache 2.4 server (mydomain.org) which is configured to proxy requests to the Qlik server (mydomain.org/server/ --> qlik server - aka 192.168.1.100 - ) thanks to the following config:
In the mashup html:
<!--Add host to these 3 links if the mashup is on an external webserver-->
Re: problem with mashup hosting, "normal scenario"
Tiny update: in order to enable proxy compatibility with Edge, the RewriteCond rule needs to be case insensitive. (because Edge sends the request header HTTP:Upgrade with an uppercase: "Websocket" instead of 'websocket" for Firefox.
Hence the rule update: ([NC] makes the condition case insensitive)