org.eclipse.rap.ui 4.3 has unresolved requirement for org.osgi.service.event version 1.3.0

[AndrewBickerton]

I'm trying to migrate an application from RAP 3 to RAP 4, and get the following error:

org.osgi.framework.BundleException: Could not resolve module: xxx.xxx.xx.xxxxx [20]
  Unresolved requirement: Require-Bundle: org.eclipse.rap.ui
    -> Bundle-SymbolicName: org.eclipse.rap.ui; bundle-version="4.3.0.20250326-0941"; singleton:="true"
       org.eclipse.rap.ui [65]
         Unresolved requirement: Import-Package: org.osgi.service.event; version="1.3.0"

Sure enough, the manifest for org.eclipse.rap.ui-4.3.0.jar contains:

Import-Package: jakarta.servlet.http;version="[5.0.0,7.0.0)",org.osgi.service.event;version="1.3.0",org.eclipse.rap.service.http;version="[4.3.0,5.0.0)"

but https://download.eclipse.org/rt/rap/4.3/R-20250601-2335/plugins/ (which I've built against) only contains org.osgi.service.event_1.4.1.202109301733.jar, not version 1.3.0. Version 1.3.0 doesn't seem to be available any more.

Is this simply an error in the org.eclipse.rap.ui-4.3.0 manifest?

[ifurnadjiev]

version="1.3.0" means the minimum version. I tried with our RAP 4.4.0 version, released yesterday with our Workbench demo and there are no unresolved dependencies.

[AndrewBickerton]

Thanks, and sorry! Rookie mistake caused by lack of familiarity with OSGi. So, my problem lies elsewhere. Can you suggest where I should be looking, please?

org.osgi.service.event_1.4.1.202109301733.jar is present along with all the other bundles in my WAR file's /WEB-INF/plugins folder.

My /WEB-INF/configuration/config.ini contains

osgi.bundles.defaultStartLevel=4
osgi.startLevel=10
osgi.bundles=...
	org.eclipse.rap.ui@start,\
	...
	org.osgi.service.event@start,\
	...

And my /WEB-INF/launch.ini contains

osgi.*=@null
org.osgi.*=@null
eclipse.*=@null

osgi.parentClassloader=app
osgi.contextClassLoaderParent=app

Do you have any tips to help me figure out why org.osgi.service.event can't be resolved when loading bundles? Your help is much appreciated!