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Overview

The usual configuration is to have the display URL and the application URL as the same, which is the base URL from the target application. However, they could different in the following scenarios:

Both applications are behind reverse proxies within a secure trusted network. End users access the applications using the display URL, where as application links use the direct URL to have direct connection to the target application bypassing the proxy.
There are multiple <Connector> configured in the Tomcat server.xml, of which one is used by the reverse proxy or different network and the other by the application link.

The recommended configuration for application links when the application URL and display URL are different is as follows:

The Display URL should point to the Base URL configured in the target application.
The Application URL will be either be the direct (not using proxy) URL or the URL pointing to a different connector specified in Tomcat server.xml.

Troubleshooting

It is possible that the Display URL HTTP Connectivity Test could fail if the display URL and application URL are different. This is because the display URL may be used to access the application from a different network through a proxy server where as the diagnostic tests are done from a different network.

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