Remote Services using Liferay Tunnel Servlet does not work for APIs originating from modules

• Type: Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 7.0.0 DXP FP10
• Fix Version/s: None
• Component/s: Legacy, Legacy > API
• Labels:
  • QA-NA
  • QA-V
• Fix Priority: 5

Description
Remotely accessing Liferay Services using Liferay Tunnel Servlet only works for portal-core services and not services originating from modules.

Steps to Reproduce

1. Setup two Liferay DXP instances
   • Client Instance
   • Remote Instance
2. Add these portal properties to both instances

   tunnel.servlet.hosts.allowed=CLIENT_INSTANCE_IP
   tunnel.servlet.https.required=false
   tunneling.servlet.shared.secret=1234567890123456
   

   • Make sure to replace CLIENT_INSTANCE_IP with the Client Instance's actual IP Address
     • Ex: tunnel.servlet.hosts.allowed=172.25.0.5
3. Startup Both Instances
4. Using Remote Instance:
   1. Navigate to Control Panel --> System Settings
   2. Search for tunnel
   3. Select 'Tunnel Auth Verifiers'
   4. Select '/api/liferay/do'
   5. Append Client Instance's IP Address to Hosts allowed field
      • Ex: 127.0.0.1,SERVER_IP,172.25.0.5
   6. Update
5. Using Client Instance:
   1. Navigate to Control Panel --> Server Administration --> Script
   2. Select Language Groovy
   3. See attached groovy script: test_tunnel.groovy
      • Update the fields under Remote Settings to reflect your test Remote Instance
   4. Copy the content inside the script into the Script field
   5. Execute the script

Expected Results: Script should run successfully for both UserServiceUtil and JournalArticleServiceUtil.

Actual Results: Script does not successfully return method invoked for JournalArticleServiceUtil. ClassNotFoundException is observed on the remote server.