JIRA V7.8.1 server
We set up a JIRA instance which is accessible via a reverse proxy server.
The proxy is the gateway between a public and a private network. JIRA is in the private network.
After the login into JIRA, the JIRA session cookie JSESSIONID contains the host FQDN and the path of the proxy server.
In addition to JIRA there is also an Apache web server running on the same host in the private network, also accessible via reverse proxy. It uses the same (internal) URL as JIRA but another port (443 vs 8090).
Thus, in theory, the JIRA session cookie should be accessible by a PHP script which runs on the Apache webserver by use of the right proxy directives. But it isn't.
To get a solution we tried several cookie directives like ProxyPassReverseCookieDomain and ProxyPassReverseCookiePath but we didn't succeed.
Any hint about this subject is welcome.