Liferay unable to load Javascript resources when using a CDN or when using a custom context with a portal proxy path

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, Master
• Fix Version/s: 7.2.10 DXP FP4, 7.2.X, 7.3.0 CE GA1, Master
• Component/s: AMD Module Loader
• Labels:
  • ee-ts
  • liferay-fixpack-dxp-4-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/80811

In certain configurations (CDN, or proxy path + custom context, or CDN + proxy path + custom context), Javascript resources fail to load.

Steps to reproduce 1

1. Setup a bundle to point to itself as the CDN

   cdn.host.http=http://localhost:8080
   

2. Start Liferay
3. Open the browser console, switch to the Network tab
4. Navigate to http://localhost:8080/?js_fast_load=1

Expected behavior is that there are no URLs with an error. Actual behavior is that many combo URLs have an error.

Steps to reproduce 2

1. Rename the Liferay context to "liferay" (rename webapps/ROOT to webapps/liferay, rename conf/Catalina/localhost/ROOT.xml to conf/Catalina/localhost/liferay.xml)
2. Setup an Apache reverse proxy that routes the path "/proxy" to "ajp://127.0.0.1:8009" and rewrites the cookie paths (so that login works correctly)

   NameVirtualHost On
   
   <Proxy "balancer://localhost">
       BalancerMember "ajp://127.0.0.1:8009"
   </Proxy>
   
   <VirtualHost *:80>
       ProxyPreserveHost On
       ProxyPass        "/proxy" "balancer://localhost" stickysession=JSESSIONID
       ProxyPassReverse "/proxy" "balancer://localhost" stickysession=JSESSIONID
       ProxyPassReverseCookiePath "/liferay" "/proxy/liferay"
       ProxyPassReverseCookiePath "/" "/proxy/"
   </VirtualHost>
   

3. Update portal-ext.properties so that Liferay knows that we have a portal proxy path.

   portal.proxy.path=/proxy
   

4. Start Liferay
5. Open the browser console, switch to the Network tab
6. Navigate to http://localhost/proxy/liferay/web/guest/home?js_fast_load=0
7. Navigate to http://localhost/proxy/liferay/web/guest/home?js_fast_load=1

Expected behavior is that there are no URLs with an error. Actual behavior is that many regular URLs have errors when js_fast_load=0 and many combo URLs have an error when js_fast_load=1.

Steps to reproduce 3

1. Follow all the setup steps from "Steps to reproduce 2"
2. Also setup the bundle to point to itself as the CDN

   cdn.host.http=http://localhost
   

3. Start Liferay
4. Open the browser console, switch to the Network tab
5. Navigate to http://localhost/proxy/liferay/web/guest/home?js_fast_load=0
6. Navigate to http://localhost/proxy/liferay/web/guest/home?js_fast_load=1

Expected behavior is that there are no URLs with an error. Actual behavior is that many regular URLs have errors when js_fast_load=0 and many combo URLs have an error when js_fast_load=1.